This is a list of observatory codes (IAU codes or MPC codes) published by the Minor Planet Center.[1] For a detailed description, see observations of small Solar System bodies.
List
| Obs. code Map | Observatories, programms, surveys, and dedicated telescopes | CTRY | Region | MPC-description | 
|---|---|---|---|---|
| 000 | Royal Observatory, Greenwich |  | ENG | Greenwich | 
| 001 | Isaac Roberts' Observatory |  | ENG | Crowborough | 
| 002 | Rayleigh Observatory, Chelmsford borough, Essex |  | ENG | Rayleigh | 
| 003 | Montpellier Observatory (Observatoire de la Babote; Montpellier Babote Observatory) |  | Occ | Montpellier | 
| 004 | Toulouse Observatory |  | Occ | Toulouse | 
| 005 | Paris Observatory (Observatoire de Paris; Observatoire de Paris-Meudon) |  | IDF | Meudon | 
| 006 | Fabra Observatory (Observatori Fabra) |  | CT | Fabra Observatory, Barcelona | 
| 007 | Paris Observatory (Observatoire de Paris; Observatoire de Paris-Meudon) |  | IDF | Paris | 
| 008 | Algiers Observatory (Centre de Recherche en Astronomie Astrophysique et Géophysique) |  | - | Algiers-Bouzareah | 
| 009 | Uecht Observatory (Sternwarte Uecht, Solar Observatory at Uecht) | .svg.png.webp) | SWG | Berne-Uecht | 
| 010 | CERGA Observatory (Centre de recherches en géodynamique et astrométrie) Src |  | PACA | Caussols | 
| 011 | Wetzikon Observatory (Sternwarte Wetzikon) | .svg.png.webp) | SWG | Wetzikon | 
| 012 | Royal Observatory of Belgium (Uccle Observatory; Observatoire Royal de Belgique; Koninklijke Sterrenwacht van België) | .svg.png.webp) | BCR | Uccle | 
| 013 | Leiden Observatory (Sterrewacht Leiden) |  | Zuid Holland | Leiden | 
| 014 | Marseille Observatory |  | PACA | Marseilles | 
| 015 | Sonnenborgh Observatory |  | Utrecht | Utrecht | 
| 016 | Besançon Astronomical Observatory (Observatoire de Besançon) |  | BFC | Besançon | 
| 017 | Hoher List Observatory (Observatorium Hoher List) |  | RP | Hoher List | 
| 018 | Düsseldorf-Bilk Observatory (Sternwarte Bilk) |  | NRW | Düsseldorf-Bilk | 
| 019 | Neuchâtel Observatory | .svg.png.webp) | SWF | Neuchatel | 
| 020 | Nice Observatory (Observatoire de Nice); observer: Matthieu Conjat Src: 21 |  | PACA | Nice | 
| 021 | Karlsruhe Observatory (Sternwarte Karlsruhe) |  | BW | Karlsruhe | 
| 022 | Observatory of Turin (Pino Torinese; Osservatorio Astronomico di Torino) |  | P | Pino Torinese | 
| 023 | Wiesbaden Observatory (Sternwarte Wiesbaden) |  | HE | Wiesbaden | 
| 024 | Heidelberg-Königstuhl State Observatory (Heidelberg Observatory; Landessternwarte Heidelberg-Königstuhl) |  | BW | Heidelberg-Konigstuhl | 
| 025 | Stuttgart Observatory |  | BW | Stuttgart | 
| 026 | Zimmerwald Observatory (Observatorium Zimmerwald) | .svg.png.webp) | SWG | Berne-Zimmerwald | 
| 027 | Brera Astronomical Observatory (Osservatorio Astronomico di Brera) |  | Lo | Milan | 
| 028 | Würzburg Observatory (Sternwarte der Universität Würzburg) |  | FB | Würzburg | 
| 029 | Hamburg Observatory (Bergedorf Observatory; Hamburger Sternwarte) |  | H | Hamburg-Bergedorf | 
| 030 | Arcetri Observatory (Osservatorio Astrofisico di Arcetri) |  | Tu | Arcetri Observatory, Florence | 
| 031 | Sonneberg Observatory |  | TH | Sonneberg | 
| 032 | Jena Observatory (Astrophysikalisches Institut und Universitäts-Sternwarte Jena) |  | TH | Jena | 
| 033 | Karl Schwarzschild Observatory (Karl-Schwarzschild-Observatorium) |  | TH | Karl Schwarzschild Observatory, Tautenburg | 
| 034 | Monte Mario Observatory (Osservatorio Astronomico di Roma Sede di Monte Mario) |  | La | Monte Mario Observatory, Rome | 
| 035 | Østervold Observatory (Copenhagen University Observatory; Københavns Universitet Astronomisk Observatorium) |  | - | Copenhagen | 
| 036 | Vatican Observatory (Specola Vaticana) | .svg.png.webp) | - | Castel Gandolfo | 
| 037 | Collurania-Teramo Observatory (Osservatorio Astronomico di Collurania-Teramo) |  | Ab | Collurania Observatory, Teramo | 
| 038 | Astronomical Observatory of Trieste (Osservatorio Astronomico di Trieste) |  | F | Trieste | 
| 039 | Lund Observatory (Lunds Universitet Institutionen för astronomi) |  | Skåne | Lund | 
| 040 | Lohrmann Institute |  | SN | Lohrmann Institute, Dresden | 
| 041 | Innsbruck Observatory |  | Ty | Innsbruck | 
| 042 | Einstein Tower |  | BB | Potsdam | 
| 043 | Asiago Astrophysical Observatory (Osservatorio Astrofisico di Asiago) |  | V | Asiago Astrophysical Observatory, Padua | 
| 044 | Astronomical Observatory of Capodimonte (Osservatorio Astronomico di Capodimonte) |  | Cam | Capodimonte Observatory, Naples | 
| 045 | Vienna Observatory (since 1879) (Universitäts-Sternwarte Wien) |  | Vi | Vienna (since 1879) | 
| 046 | Kleť Observatory, České Budějovice (Hvězdárna Kleť) |  | JC | Klet Observatory, Ceske Budejovice | 
| 047 | Poznań Observatory (Obserwatorium Astronomiczne Uniwersytet im. Adama Mickiewicza w Poznaniu) |  | WV | Poznań | 
| 048 | Hradec Králové Observatory (Hvězdárna Hradec Králové) |  | Hradec Králové | Hradec Kralove | 
| 049 | Kvistaberg Observatory |  | Up | Uppsala-Kvistaberg | 
| 050 | Stockholm Observatory (before 1931) (Stockholms observatorium) |  | Sö | Stockholm (before 1931) | 
| 051 | Royal Observatory, Cape of Good Hope |  | WC | Cape | 
| 052 | Stockholm Observatory (since 1931) (Saltsjöbaden Observatory) |  | Sö | Stockholm-Saltsjobaden | 
| 053 | Konkoly Observatory (Konkoly Obszervatórium) |  | Budapest | Konkoly Observatory, Budapest (since 1934) | 
| 054 | Brorfelde Observatory (Brorfelde Observatoriet) |  | - | Brorfelde | 
| 055 | Kraków Observatory |  | LPV | Cracow | 
| 056 | Skalnaté pleso Observatory (Observatórium Skalnaté pleso) |  | Prešov | Skalnate Pleso | 
| 057 | Belgrade Observatory |  | - | Belgrade | 
| 058 | Königsberg Observatory (before 1944) | .svg.png.webp)  | Kaliningrad | Kaliningrad | 
| 059 | Lomnický štít Observatory (Observatórium Lomnický štít) |  | Prešov | Lomnicky Stit | 
| 060 | Warsaw University Observatory |  | MV | Warsaw-Ostrowik | 
| 061 | Uzhhorod Observatory |  | Zakarpattia | Uzhhorod | 
| 062 | Iso-Heikkilä Observatory (Turku Observatory; Turun observatorio) |  | SW | Turku | 
| 063 | Tuorla Observatory (Turku-Tuorla; Tuorlan observatorio) |  | SW | Turku-Tuorla | 
| 064 | Kevola Observatory (Turku-Kevola; Kevolan tähtitorni) |  | SW | Turku-Kevola | 
| 065 | Traunstein Observatory |  | FB | Traunstein | 
| 066 | National Observatory of Athens |  | - | Athens | 
| 067 | Astronomical Observatory of Lviv University |  | Lviv | Lviv University Observatory | 
| 068 | Lviv Polytechnic Institute |  | Lviv | Lviv Polytechnic Institute | 
| 069 | Baldone, near Riga |  | - | Baldone | 
| 070 | Vilnius Observatory (before 1939) |   | Vilnius | Vilnius (before 1939) | 
| 071 | Rozhen Observatory or Bulgarian National Astronomical Observatory |  | - | NAO Rozhen, Smolyan | 
| 072 | Scheuren Observatory |  | NRW | Scheuren Observatory | 
| 073 | Bucharest Astronomical Observatory |  | - | Bucharest | 
| 074 | Boyden Observatory |  | Free State | Boyden Observatory, Bloemfontein | 
| 075 | University of Tartu Old Observatory active until 1964 (formerly Dorpat Observatory until 1919; not to be confused with modern Tartu Observatory, see L75) |  | Tartu | Tartu | 
| 076 | Johannesburg-Hartbeespoort Observatory (Union Observatory Annex), Hartbeespoort |  | North West | Johannesburg-Hartbeespoort | 
| 077 | Yale-Columbia Southern Station (1925–1951) Src |  | Gauteng | Yale-Columbia Station, Johannesburg | 
| 078 | Union Observatory (Johannesburg Observatory; Republic Observatory; Transvaal Observatory) |  | Gauteng | Johannesburg | 
| 079 | Radcliffe Observatory |  | Gauteng | Radcliffe Observatory, Pretoria | 
| 080 | Istanbul Observatory |  | - | Istanbul | 
| 081 | Leiden Southern Station, Hartbeespoort (Leiden Station, Johannesburg) |  | North West | Leiden Station, Johannesburg | 
| 082 | St. Pölten Observatory |  | LA | St. Polten | 
| 083 | Main Astronomical Observatory |  | Kyiv | Holosiivskyi District, Kyiv | 
| 084 | Pulkovo Observatory |  | Saint Petersburg | Pulkovo | 
| 085 | Kyiv Observatory |  | Kyiv | Kyiv | 
| 086 | Odesa Observatory |  | - | Odesa | 
| 087 | Helwan Observatory |  | - | Helwan | 
| 088 | Kottomia Observatory |  | - | Kottomia | 
| 089 | Mykolaiv Observatory |  | Mykolaiv | Mykolaiv | 
| 090 | Mainz Observatory |  | RP | Mainz | 
| 091 | Nurol Observatory (Observatoire de Nurol) |  | ARA | Observatoire de Nurol, Aurec sur Loire | 
| 092 | Toruń Centre for Astronomy (Piwnice Astronomical Observatory; Piwnice Obserwatorium Astronomiczne) |  | KPV | Torun-Piwnice | 
| 093 | Skibotn Observatory |  | - | Skibotn | 
| 094 | Simeiz Observatory |  | - | Crimea-Simeis | 
| 095 | 1. Crimean Astrophysical Observatory 2. Crimean Astronomical Station of the Sternberg Astronomical Institute 3. Gennadiy Borisov's observatory until it received its own code L51 |  | - | Crimea-Nauchnij | 
| 096 | Merate Observatory |  | Lo | Merate | 
| 097 | Wise Observatory |  | - | Wise Observatory, Mitzpeh Ramon | 
| 098 | Cima Ekar Observing Station (Stazione osservativa di Asiago Cima Ekar; also see #043 and #209) |  | V | Asiago Observatory, Cima Ekar | 
| 099 | Lahti Ursa Observatory (Lahden Ursan tähtitorni) |  | Päijät-Häme | Lahti | 
| 100 | Ähtäri Observatory |  | South Ostrobothnia | Ahtari | 
| 101 | Kharkiv Observatory (Astronomical Observatory of Kharkiv National University, ХАО) |  | Kharkiv | Kharkiv | 
| 102 | Zvenigorod Observatory |  | Moscow | Zvenigorod | 
| 103 | Ljubljana Observatory |  | Ljubljana | Ljubljana | 
| 104 | Pistoia Mountains Astronomical Observatory (San Marcello Pistoiese; Osservatorio Astronomico della Montagna Pistoiese; Osservatorio di Pian dei Termini, Pian dei Termini Observatory) |  | Tu | San Marcello Pistoiese | 
| 105 | Moscow Observatory |  | Moscow | Moscow | 
| 106 | Črni Vrh Observatory (Observatorij Črni Vrh) |  | Primorska | Crni Vrh | 
| 107 | Cavezzo Observatory, (Osservatorio Astronomico "Geminiamo Montanari") |  | ER | Cavezzo | 
| 108 | Montelupo Observatory |  | Tu | Montelupo | 
| 109 | Kouba Observatory |  | - | Algiers-Kouba | 
| 110 | Rostov Observatory |  | Yaroslavl | Rostov | 
| 111 | Piazzano Observatory |  | Tu | Piazzano Observatory, Florence | 
| 112 | Pleiade Observatory |  | V | Pleiade Observatory, Verona | 
| 113 | Drebach Observatory (Volkssternwarte Drebach), Schönbrunn |  | SN | Volkssternwarte Drebach, Schoenbrunn | 
| 114 | Zelenchukskaya Station of the Engelhardt Observatory (see #136), Kazan University Observatory) |  | Karachay-Cherkessia | Engelhardt Observatory, Zelenchukskaya Station | 
| 115 | Special Astrophysical Observatory (SAO) (also see #114) |  | Karachay-Cherkessia | Zelenchukskaya | 
| 116 | Giesing Observatory, München-Giesing |  | FB | Giesing | 
| 117 | Sendling Observatory, Munich |  | FB | Sendling | 
| 118 | Modra Observatory (Astronomické observatórium Modra; Astronomical and Geophysical Observatory, Modra) |  | Bratislava | Astronomical and Geophysical Observatory, Modra | 
| 119 | Abastuman Observatory |  | - | Abastuman | 
| 120 | Višnjan Observatory (Zvjezdarnica Višnjan) |  | - | Visnjan | 
| 121 | Chuhuiv Observational Station |  | Kharkiv | Chuhuiv Raion, Kharkiv Oblast | 
| 122 | Pises Observatory (Observatoire des Pises) |  | Occ | Pises Observatory | 
| 123 | Byurakan Observatory |  | - | Byurakan | 
| 124 | Castres Observatory (Observatoire de Castres) |  | Occ | Castres | 
| 125 | Tbilisi Observatory |  | - | Tbilisi | 
| 126 | Monte Viseggi Observatory (Osservatorio Astronomico di Monte Viseggi), obs.: Giulio Scarfì |  | Li | Monte Viseggi | 
| 127 | Bornheim Observatory |  | NRW | Bornheim | 
| 128 | Saratov Observatory of the Saratov State University |  | Saratov | Saratov | 
| 129 | Ordubad Observatory |  | - | Ordubad | 
| 130 | Lumezzane Observatory (Osservatorio Astronomico Serafino Zani) |  | Lo | Lumezzane | 
| 131 | Observatoire de l'Ardèche |  | ARA | Observatoire de l'Ardeche | 
| 132 | Bédoin Observatory (Observatoire de Bédoin); observer: Pierre Antonini |  | PACA | Bedoin | 
| 133 | Les Tardieux Observatory; observer: Michel Bœuf |  | PACA | Les Tardieux | 
| 134 | Großschwabhausen Observatory of the Jena Observatory (see #032) near Jena |  | TH | Groszschwabhausen | 
| 135 | Kasan Observatory |  | Tatarstan | Kasan | 
| 136 | Engelhardt Observatory of the Kazan University Observatory |  | Tatarstan | Engelhardt Observatory, Kasan | 
| 137 | Givatayim Observatory |  | - | Givatayim Observatory | 
| 138 | Village-Neuf Observatory |  | GE | Village-Neuf | 
| 139 | Antibes Observatory; observer: Laurent Brunetto[2] |  | PACA | Antibes | 
| 140 | Augerolles Observatory |  | ARA | Augerolles | 
| 141 | Hottviller Observatory (Observatoire de Hottviller) |  | GE | Hottviller | 
| 142 | Sinsen Observatory |  | NRW | Sinsen | 
| 143 | Gnosca Observatory (Osservatorio Astronomico di Gnosca; observer: Stefano Sposetti) | .svg.png.webp) | SWI | Gnosca | 
| 144 | Bray et Lu Observatory |  | IDF | Bray et Lu | 
| 145 | 's-Gravenwezel Observatory | .svg.png.webp) | VLG | 's-Gravenwezel | 
| 146 | Frignano Observatory |  | - | Frignano | 
| 147 | Suno Observatory (Osservatorio Astronomico di Suno; Osservatorio Astronomico Galileo Galilei) Src |  | P | Osservatorio Astronomico di Suno | 
| 148 | Guitalens Observatory (Observatoire de Guitalens; observer: Alain Klotz)[2] |  | Occ | Guitalens | 
| 149 | Beine-Nauroy Observatory |  | GE | Beine-Nauroy | 
| 150 | Maisons Laffitte Observatory |  | IDF | Maisons Laffitte | 
| 151 | Eschenberg Observatory (Sternwarte Eschenberg) | .svg.png.webp) | SWG | Eschenberg Observatory, Winterthur | 
| 152 | Moletai Astronomical Observatory (MAO) |  | - | Moletai Astronomical Observatory | 
| 153 | Stuttgart-Hoffeld Observatory |  | BW | Stuttgart-Hoffeld | 
| 154 | Cortina Obsrevatory (Associazione Astronomica Cortina; Osservatorio Astronomico del Col Drusciè "Helmut Ullrich"), Cortina d'Ampezzo |  | V | Cortina | 
| 155 | Ole Rømer Observatory |  | - | Ole Romer Observatory, Aarhus | 
| 156 | Catania Astrophysical Observatory |  | Si | Catania Astrophysical Observatory | 
| 157 | Frasso Sabino Observatory (Osservatorio Astronomico Virginio Cesarini – Frasso Sabino) Src |  | La | Frasso Sabino | 
| 158 | Promiod Observatory (Osservatorio Dalai Lama di Promiod) |  | Ao | Promiod | 
| 159 | Monte Agliale Observatory (Osservatorio Astronomico di Monte Agliale) |  | Tu | Monte Agliale | 
| 160 | Castelmartini Observatory (Osservatorio Astronomico di Castelmartini, owner: E. Prosperi) Src |  | Tu | Castelmartini | 
| 161 | Cerrina Tololo Observatory |  | P | Cerrina Tololo Observatory | 
| 162 | Potenza Observatory |  | B | Potenza | 
| 163 | Roeser Observatory |  | - | Roeser Observatory, Luxembourg | 
| 164 | St. Michel sur Meurthe Observatory |  | GE | St. Michel sur Meurthe | 
| 165 | Piera Observatory (Observatori Astronomic de Piera) |  | CT | Piera Observatory, Barcelona | 
| 166 | Úpice Observatory (Hvězdárna v Úpici) |  | Hradec Králové | Upice | 
| 167 | Bülach Observatory (Sternwarte Bülach) | .svg.png.webp) | SWG | Bulach Observatory | 
| 168 | Kourovskaya Observatory |  | Sverdlovsk | Kourovskaya | 
| 169 | Airali Observatory |  | P | Airali Observatory | 
| 170 | Begues Observatory (Observatorio de Begues) |  | CT | Observatorio de Begues | 
| 171 | Flarestar Observatory |  | - | Flarestar Observatory, San Gwann | 
| 172 | Onnens Observatory | .svg.png.webp) | SWF | Onnens | 
| 173 | St Clotilde Observatory (Observatoire Sainte-Clotilde) |   | Réunion | St. Clotilde, Reunion | 
| 174 | Nyrölä Observatory (Nyrölän observatorio), Jyväskylä |  | CF | Nyrola Observatory, Jyvaskyla | 
| 175 | Bagnoud Observatory | .svg.png.webp) | SWF | F.-X. Bagnoud Observatory, St-Luc | 
| 176 | Consell Observatory (Observatorio Astronómico de Consell) |  | IB | Observatorio Astronomico de Consell | 
| 177 | Le Cres Observatory, observer: Raymond Poncy [2] |  | Occ | Le Cres | 
| 178 | Collonges Observatory observer: Jean-Gabriel Bosch[2] |  | ARA | Collonges | 
| 179 | Monte Generoso Observatory (Osservatorio del Monte Generoso) | .svg.png.webp) | SWI | Monte Generoso | 
| 180 | Mauguio Observatory |  | Occ | Mauguio | 
| 181 | Makes Observatory (Observatoire des Makes; observers: Jean-Paul Teng, Andre Peyrot, Alain Klotz)[2] |   | Réunion | Observatoire des Makes, Saint-Louis | 
| 182 | St Paul Observatory |   | Réunion | St. Paul, Reunion | 
| 183 | Starlab Observatory |  | Karachay-Cherkessia | Starlab Observatory, Karachay-Cherkessia | 
| 184 | Valmeca Observatory |  | PACA | Valmeca Observatory, Puimichel | 
| 185 | Jura Observatory (Observatoire astronomique jurassien) | .svg.png.webp) | SWF | Observatoire Astronomique Jurassien-Vicques | 
| 186 | Kitab Observatory, Mt. Maydanak |  | Kashkadarya | Kitab | 
| 187 | Borowiec Astrogeodynamic Observatory |  | WV | Astronomical Observatory, Borowiec | 
| 188 | Majdanak Observatory |  | Kashkadarya | Majdanak | 
| 189 | Geneva Observatory (old observatory; before 1967) | .svg.png.webp) | SWF | Geneva (before 1967) | 
| 190 | Gissar Observatory |  | RR | Gissar | 
| 191 | Dushanbe Observatory |  | RR | Dushanbe | 
| 192 | Tashkent Observatory |  | Tashkent | Tashkent | 
| 193 | Sanglok Observatory |  | Khatlon | Sanglok | 
| 194 | Tivoli Observatory |  | - | Tivoli | 
| 195 | Untermenzing Observatory |  | FB | Untermenzing Observatory, Munich | 
| 196 | Homburg-Erbach Observatory |  | SL | Homburg-Erbach | 
| 197 | Bastia Observatory |  | ER | Bastia | 
| 198 | Wildberg Observatory (Observatorium Wildberg) Src |  | BW | Wildberg | 
| 199 | Buthiers Observatory (Observatoire de Buthiers) |  | CVL | Buthiers | 
| 200 | Beersel Hills Observatory | .svg.png.webp) | VLG | Beersel Hills Observatory | 
| 201 | Jonathan B. Postel Observatory, Promiod |  | Ao | Jonathan B. Postel Observatory | 
| 202 | Tamaris Observatoire |  | PACA | Tamaris Observatoire, La Seyne sur Mer | 
| 203 | GiaGa Observatory |  | Lo | GiaGa Observatory | 
| 204 | Schiaparelli Observatory |  | Lo | Schiaparelli Observatory | 
| 205 | Osservatorio Casalecchio di Reno |  | ER | Obs. Casalecchio di Reno, Bologna | 
| 206 | Haagaar Observatory |  | - | Haagaar Observatory, Eina | 
| 207 | Osservatorio Antonio Grosso |  | Lo | Osservatorio Antonio Grosso | 
| 208 | Rivalta Observatory |  | ER | Rivalta | 
| 209 | Asiago-DLR Asteroid Survey (ADAS) at the Cima Ekar Station (#098) of the Asiago Observatory (#043) |  | V | Asiago Observatory, Cima Ekar-ADAS | 
| 210 | Almaty Observatory (Alma-Ata Observatory) |  | - | Alma-Ata | 
| 211 | Scandicci Observatory |  | Tu | Scandicci | 
| 212 | La Dehesilla Observatory (Observatorio La Dehesilla) |   | AN | Observatorio La Dehesilla | 
| 213 | Montcabre Observatory (Observatorio Montcabre) |   | CT | Observatorio Montcabre | 
| 214 | Garching Observatory |  | FB | Garching Observatory | 
| 215 | Buchloe Observatory |  | FB | Buchloe | 
| 216 | Côtes de Meuse Observatory (Observatoire des Côtes de Meuse) |  | GE | Observatoire des Cote de Meuse | 
| 217 | Assah Observatory |  | - | Assah | 
| 218 | Hyderabad observatory |  | - | Hyderabad | 
| 219 | Japal-Rangapur Observatory |  | - | Japal-Rangapur | 
| 220 | Vainu Bappu Observatory |  | - | Vainu Bappu Observatory, Kavalur | 
| 221 | IAS Observatory (IAS), Hakos location |  | - | IAS Observatory, Hakos | 
| 222 | Yerres-Canotiers Observatory |  | IDF | Yerres-Canotiers | 
| 223 | Madras Observatory (Indian Institute of Astrophysics) |  | - | Madras | 
| 224 | Ottmarsheim Observatory (Observatoire d'Ottmarsheim), observer: Claudine Rinner |  | GE | Ottmarsheim | 
| 225 | Northwood Ridge Observatory, Northwood |  | NH | Northwood Ridge Observatory | 
| 226 | Guido Ruggieri Observatory |  | V | Guido Ruggieri Observatory, Padua | 
| 227 | OrbitJet Observatory |  | NY | OrbitJet Observatory, Colden | 
| 228 | Bruno Zugna Observatory |  | F | Bruno Zugna Observatory, Trieste | 
| 229 | G. C. Gloriosi Astronomical Observatory |  | Cam | G. C. Gloriosi Astronomical Observatory, Salerno | 
| 230 | Mount Wendelstein Observatory |  | FB | Mt. Wendelstein Observatory | 
| 231 | Vesqueville Observatory | .svg.png.webp) | WAL | Vesqueville | 
| 232 | Masquefa Observatory |  | CT | Masquefa Observatory | 
| 233 | Sauro Donati Astronomical Observatory |  | Tu | Sauro Donati Astronomical Observatory, San Vito | 
| 234 | Coddenham Observatory |  | ENG | Coddenham Observatory | 
| 235 | CAST Observatory |  | F | CAST Observatory, Talmassons | 
| 236 | Tomsk Observatory |  | Tomsk | Tomsk | 
| 237 | Baugy Observatory |  | CVL | Baugy | 
| 238 | Grorudalen Optical Observatory |  | - | Grorudalen Optical Observatory | 
| 239 | Michael Adrian Observatory |  | HE | Trebur | 
| 240 | Herrenberg Observatory (Herrenberg Sternwarte) at Herrenberg |  | BW | Herrenberg Sternwarte | 
| 241 | Schaerding Observatory |  | UA | Schaerding | 
| 242 | Varennes Observatory |  | Occ | Varennes | 
| 243 | Umbrella Observatory |  | NI | Umbrella Observatory, Fredenbeck | 
| 244 | Geocentric Occultation Observation | SPACE | geocentric | Geocentric Occultation Observation | 
| 245 | Spitzer Space Telescope | SPACE | Earth-trailing | Spitzer Space Telescope | 
| 246 | Klet Observatory near Earth and other unusual objects observations team and telescope (KLENOT) at Kleť Observatory (#046) |  | JC | Klet Observatory-KLENOT | 
| 247 | Roving Observer | SPACE | geocentric | Roving Observer | 
| 248 | Hipparcos | SPACE | geostationary | Hipparcos | 
| 249 | SOHO | SPACE | L1 | SOHO | 
| 250 | Hubble Space Telescope | SPACE | LEO | Hubble Space Telescope | 
| 251 | Arecibo Observatory |  | PR | Arecibo | 
| 252 | Goldstone DSS 13, at Goldstone Deep Space Communications Complex |  | CA | Goldstone DSS 13, Fort Irwin | 
| 253 | Goldstone DSS 14, at Goldstone Deep Space Communications Complex |  | CA | Goldstone DSS 14, Fort Irwin | 
| 254 | Haystack Observatory |  | MA | Haystack, Westford | 
| 255 | Evpatoria Observatory |  | - | Evpatoria | 
| 256 | Green Bank Telescope |  | WV | Green Bank | 
| 257 | Goldstone DSS 25, at Goldstone Deep Space Communications Complex |  | CA | Goldstone DSS 25, Fort Irwin | 
| 258 | Gaia space observatory | SPACE | L2 | Gaia | 
| 259 | EISCAT Tromso UHF |  | - | EISCAT Tromso UHF | 
| 260 | Digitized Sky Survey (DSS) at Siding Spring Observatory (see #413) | .svg.png.webp) | NSW | Siding Spring Observatory-DSS | 
| 261 | Digitized Sky Survey (DSS) at Palomar Observatory (see #675) |  | CA | Palomar Mountain-DSS | 
| 262 | Digitized Sky Survey (DSS) at ESA's La Silla see #809 |  | Co | European Southern Observatory, La Silla-DSS | 
| 266 | New Horizons KBO Search with the Subaru Telescope |  | HI | New Horizons KBO Search-Subaru | 
| 267 | New Horizons KBO Search with the Canada–France–Hawaii Telescope |  | HI | New Horizons KBO Search-CFHT | 
| 268 | New Horizons KBO Search with the Magellan II (Clay) telescope |  | Af | New Horizons KBO Search-Magellan/Clay | 
| 269 | New Horizons KBO Search with the Magellan I (Baade) telescope |  | Af | New Horizons KBO Search-Magellan/Baade | 
| 270 | Unistellar Network, (also see #247 and MPC note) | SPACE? | LEO? | Unistellar Network, Roving Observer | 
| 276 | Plonsk Observatory, Płońsk |  | - | Plonsk | 
| 277 | Royal Observatory, Edinburgh (ROE) |  | SCT | Royal Observatory, Blackford Hill, Edinburgh | 
| 278 | Peking, Transit of Venus site |  | Beijing | Peking, Transit of Venus site | 
| 279 | Seeberg Observatory, Gotha (1787–1857) |  | TH | Seeberg Observatory, Gotha (1787-1857) | 
| 280 | Lilienthal Observatory |  | SH | Lilienthal | 
| 281 | Bologna Observatory |  | ER | Bologna | 
| 282 | Nîmes Observatory |  | Occ | Nîmes | 
| 283 | Bremen Observatory |  | HB | Bremen | 
| 284 | Driesen Observatory, formerly Germany |  | LV | Driesen | 
| 285 | Flammarion Observatory |  | IDF | Flammarion Observatory, Juvisy | 
| 286 | Yunnan Observatory |  | Yunnan | Yunnan Observatory | 
| 290 | Vatican Advanced Technology Telescope (VATT) at Mount Graham (also see #G83) |  | AZ | Mt. Graham-VATT | 
| 291 | LPL/Spacewatch II (1.8-meter telescope; also see #691) |  | AZ | LPL/Spacewatch II | 
| 292 | Burlington Observatory |  | NJ | Burlington, New Jersey | 
| 293 | Burlington remote site Observatory |  | NJ | Burlington remote site | 
| 294 | Astrophysical Observatory, College of Staten Island |  | NY | Astrophysical Obs., College of Staten Island | 
| 295 | Catholic University Observatory |  | DC | Catholic University Observatory, Washington | 
| 296 | Dudley Observatory (after 1893), Schenectady |  | NY | Dudley Observatory, Albany (after 1893) | 
| 297 | Middlebury College Observatory of Middlebury College |  | VT | Middlebury | 
| 298 | Van Vleck Observatory, Middletown |  | CT | Van Vleck Observatory | 
| 299 | Bosscha Observatory, Bandung |  | - | Bosscha Observatory, Lembang | 
| 300 | Bisei Spaceguard Center – BATTeRS |  | 33 | Bisei Spaceguard Center-BATTeRS | 
| 301 | Observatoire du Mont Mégantic | .svg.png.webp) | QC | Mont Megantic | 
| 302 | University of the Andes, Venezuela station (not built) |  | Mérida | University of the Andes station | 
| 303 | Llano del Hato National Astronomical Observatory (Observatorio Astronómico Nacional de Llano del Hato) |  | Mérida | OAN de Llano del Hato, Mérida | 
| 304 | Las Campanas Observatory |  | Af | Las Campanas Observatory | 
| 305 | Hainan Island Station – (of the Purple Mountain Obs.; see #330) |  | Shaanxi | Purple Mountain, Hainan Island station | 
| 306 | Taya Beixo Observatory |  | Lara | Observatorio Taya Beixo, Barquisimeto | 
| 307 | Shattuck Observatory |  | NH | Shattuck Observatory, Hanover | 
| 309 | Paranal Observatory |  | Af | Cerro Paranal | 
| 310 | Minor Planet Center – Test Code |  | MA | Minor Planet Center Test Code | 
| 312 | Tsingtao field Station, Xisha Islands |  | Kaohsiung | Tsingtao field station, Xisha Islands | 
| 318 | Quinns Rock Observatory | .svg.png.webp) | WA | Quinns Rock | 
| 319 | Perth Observatory, Perth-Lowell Telescope | .svg.png.webp) | WA | Perth Observatory, Perth-Lowell Telescope | 
| 320 | Chiro Observatory | .svg.png.webp) | WA | Chiro Observatory | 
| 321 | Craigie Observatory | .svg.png.webp) | WA | Craigie | 
| 322 | Perth Observatory, (Bickley-MCT) | .svg.png.webp) | WA | Perth Observatory, Bickley-MCT | 
| 323 | Perth Observatory, (Bickley) | .svg.png.webp) | WA | Perth Observatory, Bickley | 
| 324 | Shaho Station of the Beijing Astronomical Observatory |  | Beijing | Peking Observatory, Shaho Station | 
| 327 | Xinglong Station (NAOC) of the Beijing Astronomical Obs. |  | Hebei | Peking Observatory, Xinglong Station | 
| 330 | Purple Mountain Observatory |  | Jiangsu | Purple Mountain Observatory, Nanking | 
| 333 | Desert Eagle Observatory |  | AZ | Desert Eagle Observatory | 
| 334 | Tsingtao Observatory |  | Shandong | Tsingtao | 
| 337 | Sheshan Observatory, formerly Zô-Sé |  | Shanghai | Sheshan, formerly Zo-Se | 
| 340 | Toyonaka Observatory |  | 27 | Toyonaka | 
| 341 | Akashina Observatory |  | 20 | Akashina | 
| 342 | Shishikui Observatory |  | 36 | Shishikui | 
| 343 | Younchun Observatory |  | Gyeonggi | Younchun | 
| 344 | Bohyunsan Optical Astronomy Observatory (BOAO) |  | North Gyeongsang | Bohyunsan Optical Astronomy Observatory | 
| 345 | Sobaeksan Optical Astronomy Observatory |  | North Chungcheong | Sobaeksan Optical Astronomy Observatory | 
| 346 | KNUE Astronomical Observatory |  | Sejong-si | KNUE Astronomical Observatory | 
| 347 | Utsunomiya-Imaizumi Observatory |  | - | Utsunomiya-Imaizumi | 
| 348 | Ayabe Observatory |  | 26 | Ayabe | 
| 349 | Ageo Observatory |  | 11 | Ageo | 
| 350 | Kurohone Observatory |  | 10 | Kurohone | 
| 351 | Sakamoto Observatory |  | 25 | Sakamoto | 
| 352 | Konan Observatory |  | 25 | Konan | 
| 353 | Nishi Kobe Observatory |  | 28 | Nishi Kobe | 
| 354 | Kawachi Observatory |  | 09 | Kawachi | 
| 355 | Hadano Observatory |  | 14 | Hadano | 
| 356 | Kogota Observatory |  | 04 | Kogota | 
| 357 | Shimotsuma Observatory |  | 08 | Shimotsuma | 
| 358 | Nanyo Observatory |  | 06 | Nanyo | 
| 359 | Wakayama Observatory |  | 30 | Wakayama | 
| 360 | Kuma Kogen Astronomical Observatory |  | 38 | Kuma Kogen | 
| 361 | Sumoto Observatory |  | 28 | Sumoto | 
| 362 | Ray Observatory |  | 01 | Ray Observatory | 
| 363 | Yamada Observatory |  | 40 | Yamada | 
| 364 | YCPM Kagoshima Station |  | 46 | YCPM Kagoshima Station | 
| 365 | Uto Observatory |  | 29 | Uto Observatory | 
| 366 | Miyasaka Observatory |  | 19 | Miyasaka Observatory | 
| 367 | Yatsuka Observatory |  | 32 | Yatsuka | 
| 368 | Ochiai Observatory |  | 19 | Ochiai | 
| 369 | Chichibu Astronomical Observatory, Naoto Satō |  | 11 | Chichibu | 
| 370 | Kochi Observatory |  | 39 | Kochi | 
| 371 | Tokyo-Okayama (Okayama Astrophysical Observatory; OAO) of the Tokyo Observatory |  | 33 | Tokyo-Okayama | 
| 372 | Geisei Observatory |  | 39 | Geisei | 
| 373 | Oishi Observatory |  | 30 | Oishi | 
| 374 | Minami-Oda Observatory |  | 28 | Minami-Oda Observatory | 
| 375 | Uzurano Observatory |  | 28 | Uzurano | 
| 376 | Uenohara Observatory |  | 19 | Uenohara | 
| 377 | Kwasan Observatory, Kyoto University (Kwasan and Hida Observatories) |  | 26 | Kwasan Observatory, Kyoto | 
| 378 | Murou Observatory |  | 29 | Murou | 
| 379 | Hamamatsu-Yuto Observatory |  | 22 | Hamamatsu-Yuto | 
| 380 | Ishiki Observatory |  | 23 | Ishiki | 
| 381 | Kiso Observatory, University of Tokyo |  | 20 | Tokyo-Kiso | 
| 382 | Norikura Observatory, of Tokyo Astronomical Observatory |  | 13 | Tokyo-Norikura | 
| 383 | Chirorin Observatory |  | 20 | Chirorin | 
| 384 | Shimada Observatory |  | 22 | Shimada | 
| 385 | Nihondaira Observatory |  | 22 | Nihondaira Observatory | 
| 386 | Yatsugatake-Kobuchizawa |  | 19 | Yatsugatake-Kobuchizawa | 
| 387 | Dodaira Observatory of Tokyo Astronomical Obs. |  | 11 | Tokyo-Dodaira | 
| 388 | Mitaka Observatory, Mitaka, Tokyo (of National Astronomical Observatory) |  | 13 | Tokyo-Mitaka | 
| 389 | Tokyo Astronomical Observatory (before 1938) |  | 13 | Tokyo (before 1938) | 
| 390 | Utsunomiya Observatory |  | 09 | Utsunomiya | 
| 391 | Ayashi Station of the Sendai Obs. |  | 04 | Sendai Observatory, Ayashi Station | 
| 392 | JCPM Sapporo Station |  | 01 | JCPM Sapporo Station | 
| 393 | JCPM Sakura Station |  | 08 | JCPM Sakura Station | 
| 394 | JCPM Hamatonbetsu Station |  | 01 | JCPM Hamatonbetsu Station | 
| 395 | Tokyo-Asahikawa |  | 01 | Tokyo-Asahikawa | 
| 396 | Asahikawa Observatory |  | 01 | Asahikawa | 
| 397 | Sapporo Science Center |  | 01 | Sapporo Science Center | 
| 398 | Nagatoro Observatory |  | 11 | Nagatoro | 
| 399 | Kushiro Observatory |  | 01 | Kushiro | 
| 400 | Kitami Observatory |  | 01 | Kitami | 
| 401 | Oosato Observatory |  | 11 | Oosato | 
| 402 | Dynic Astronomical Observatory |  | 25 | Dynic Astronomical Observatory | 
| 403 | Kani Observatory |  | 21 | Kani | 
| 404 | Yamamoto Observatory |  | 07 | Yamamoto | 
| 405 | Kamihoriguchi Observatory |  | 10 | Kamihoriguchi | 
| 406 | Bibai Observatory |  | 01 | Bibai | 
| 407 | Kahoku Observatory |  | 06 | Kahoku | 
| 408 | Mount Nyukasa Station |  | 20 | Nyukasa | 
| 409 | Kiyose and Mizuho |  | 13 | Kiyose and Mizuho | 
| 410 | Sengamine Observatory |  | 28 | Sengamine | 
| 411 | Oizumi Observatory |  | 10 | Oizumi | 
| 412 | Iwaki Observatory |  | 07 | Iwaki | 
| 413 | Siding Spring Observatory | .svg.png.webp) | NSW | Siding Spring Observatory | 
| 414 | Mount Stromlo Observatory | .svg.png.webp) | ACT | Mount Stromlo | 
| 415 | Kambah Observatory, near Canberra | .svg.png.webp) | ACT | Kambah | 
| 416 | Barton Observatory, near Canberra | .svg.png.webp) | ACT | Barton | 
| 417 | Yanagida Astronomical Observatory |  | 17 | Yanagida Astronomical Observatory | 
| 418 | Tamworth Observatory | .svg.png.webp) | NSW | Tamworth | 
| 419 | Windsor Observatory | .svg.png.webp) | NSW | Windsor | 
| 420 | Sydney Observatory | .svg.png.webp) | NSW | Sydney | 
| 421 | Mt. Kajigamori |  | 39 | Mt. Kajigamori, Otoyo | 
| 422 | Loomberah Observatory | .svg.png.webp) | NSW | Loomberah | 
| 423 | North Ryde Observatory | .svg.png.webp) | NSW | North Ryde | 
| 424 | Macquarie Observatory, near Canberra | .svg.png.webp) | ACT | Macquarie | 
| 425 | Taylor Range Observatory | .svg.png.webp) | Qld | Taylor Range Observatory, Brisbane | 
| 426 | Woomera Observatory | .svg.png.webp) | SA | Woomera | 
| 427 | Stockport Observatory | .svg.png.webp) | SA | Stockport | 
| 428 | Reedy Creek Observatory | .svg.png.webp) | Qld | Reedy Creek | 
| 429 | Hawker Observatory | .svg.png.webp) | ACT | Hawker | 
| 430 | Rainbow Observatory | .svg.png.webp) | NSW | Rainbow Observatory, near Coonabarabran | 
| 431 | Mount Tarana Observatory | .svg.png.webp) | NSW | Mt. Tarana Observatory, Bathurst | 
| 432 | Boambee Observatory | .svg.png.webp) | NSW | Boambee | 
| 433 | Bagnall Beach Observatory | .svg.png.webp) | NSW | Bagnall Beach Observatory | 
| 434 | S. Benedetto Po Observatory |  | Lo | S. Benedetto Po | 
| 435 | G. Colombo Astronomical Observatory |  | V | G. Colombo Astronomical Observatory, Padua | 
| 436 | Livergnano Observatory (Osservatorio di Livergnano) |  | ER | Osservatorio di Livergnano | 
| 437 | Haverford Observatory |  | PA | Haverford | 
| 438 | Smith College Observatory |  | MA | Smith College Observatory, Northampton | 
| 439 | ROTSE-III |  | NM | ROTSE-III, Los Alamos | 
| 440 | Elginfield Observatory | .svg.png.webp) | ON | Elginfield Observatory | 
| 441 | Swilken Brae Observatory |  | SCT | Swilken Brae, St. Andrews | 
| 442 | Gualba Observatory |  | CL | Gualba Observatory | 
| 443 | Plomer Observatory (Observatorio Astronomico Plomer) |  | BA | Obs. Astronomico Plomer, Buenos Aires | 
| 444 | Star Cruiser Observatory, Anza |  | CA | Star Cruiser Observatory | 
| 445 | Observatori d'Ontinyent |  | V | Observatorio d'Ontinyent | 
| 446 | Kingsnake Observatory |  | TX | Kingsnake Observatory, Seguin | 
| 447 | Centennial Observatory |  | CO | Centennial Observatory | 
| 448 | Desert Moon Observatory; observers: Janet and Berton L. Stevens (Src, Src) |  | NM | Desert Moon Observatory, Las Cruces | 
| 449 | Griffin Hunter Observatory |  | SC | Griffin Hunter Observatory, Bethune | 
| 450 | Carla Jane Observatory |  | NC | Carla Jane Observatory, Charlotte | 
| 451 | West Skies Observatory |  | KS | West Skies Observatory, Mulvane | 
| 452 | Big Cypress Observatory |  | FL | Big Cypress Observatory, Fort Lauderdale | 
| 453 | Edwards Raven Observatory |  | CA | Edwards Raven Observatory | 
| 454 | Maryland Space Grant Consortium Observatory |  | CA | Maryland Space Grant Consortium Observatory | 
| 455 | CBA Concord |  | CA | CBA Concord | 
| 456 | Daventry Observatory |  | ENG | Daventry Observatory | 
| 457 | Partizanske Observatory |  | Trenčín | Partizanske | 
| 458 | Guadarrama Observatory |  | MD | Guadarrama Observatory | 
| 459 | Smith River Observatory |  | NH | Smith River Observatory, Danbury | 
| 460 | Area 52 Observatory |  | AR | Area 52 Observatory, Nashville | 
| 461 | Piszkéstető Station – of the Konkoly Obs., see #561 and #053; Src |  | - | University of Szeged, Piszkesteto Stn. (Konkoly) | 
| 462 | Mount Belleview Observatory |  | MD | Mount Belleview Observatory | 
| 463 | Sommers–Bausch Observatory |  | CO | Sommers-Bausch Observatory, Boulder | 
| 464 | Toby Point Observatory |  | RI | Toby Point Observatory, Narragansett | 
| 465 | Takapuna Observatory |  | Au | Takapuna | 
| 466 | Mount Molehill Observatory |  | Au | Mount Molehill Observatory, Auckland | 
| 467 | Stardome Observatory (Auckland Observatory) |  | Au | Auckland Observatory | 
| 468 | Campo Catino Astronomical Observatory (Osservatorio Astronomico Campo Catino) |  | La | Astronomical Observatory, Campo Catino | 
| 469 | Courroux Observatory | .svg.png.webp) | SWF | Courroux | 
| 470 | Ceccano Observatory (Osservatorio Astronomico Bellatrix) |  | La | Ceccano | 
| 471 | Houstrup Observatory |  | - | Houstrup | 
| 472 | Merlette Observatory |  | PACA | Merlette | 
| 473 | Remanzacco Observatory |  | F | Remanzacco | 
| 474 | Mount John University Observatory (University of Canterbury Mount John Observatory; UCMJO), |  | Ca | Mount John Observatory, Lake Tekapo | 
| 475 | Observatory of Turin (before 1913) |  | P | Turin (before 1913) | 
| 476 | Grange Observatory Src |  | P | Grange Observatory, Bussoleno | 
| 477 | Galleywood Observatory |  | ENG | Galleywood | 
| 478 | Lamalou-les-Bains Observatory |  | Occ | Lamalou-les-Bains | 
| 479 | Sollies-Pont Observatory |  | PACA | Sollies-Pont | 
| 480 | Cockfield Observatory |  | ENG | Cockfield | 
| 481 | Moorwarfen Observatory |   | SCT | Moorwarfen | 
| 482 | St. Andrews Observatory (Observatory of the University of St Andrews) |  | - | St. Andrews | 
| 483 | Carter Observatory |  | Mrl | Carter Observatory, Black Birch Station | 
| 484 | Happy Valley Observatory |  | W | Happy Valley, Wellington | 
| 485 | Carter Observatory |  | W | Carter Observatory, Wellington | 
| 486 | Palmerston North Observatory |  | MW | Palmerston North | 
| 487 | Macnairston Observatory |  | SCT | Macnairston Observatory | 
| 488 | Newcastle upon Tyne |  | ENG | Newcastle upon Tyne | 
| 489 | Hemingford Abbots Observatory |  | ENG | Hemingford Abbots | 
| 490 | Wimborne Minster Observatory |  | ENG | Wimborne Minster | 
| 491 | Centro Astronómico de Yebes |  | CM | Centro Astronomico de Yebes | 
| 492 | Mickleover Observatory |  | ENG | Mickleover | 
| 493 | Calar Alto Observatory |  | AN | Calar Alto | 
| 494 | Stakenbridge Observatory, near Kidderminster |  | ENG | Stakenbridge | 
| 495 | Altrincham Observatory |  | ENG | Altrincham | 
| 496 | Bishopstoke Observatory |  | ENG | Bishopstoke | 
| 497 | Ascot-Loudwater Observatory |  | ENG | Ascot-Loudwater | 
| 498 | Earls Barton Observatory |  | ENG | Earls Barton | 
| 499 | Cheam Observatory |  | ENG | Cheam | 
| 500 | Geocentric (e.g. IRAS) | SPACE | - | Geocentric | 
| 501 | Herstmonceux Observatory |  | ENG | Herstmonceux | 
| 502 | Colchester Observatory |  | ENG | Colchester | 
| 503 | Cambridge Observatory |  | ENG | Cambridge | 
| 504 | Le Creusot Observatory (Src) |  | BFC | Le Creusot | 
| 505 | Simon Stevin Observatory |  | Noord Brabant | Simon Stevin | 
| 506 | Bendestorf Observatory |  | NI | Bendestorf | 
| 507 | Nyenheim Observatory |  | Gelderland | Nyenheim | 
| 508 | Zeist Observatory |  | Gelderland | Zeist | 
| 509 | La Seyne sur Mer Observatory |  | PACA | La Seyne sur Mer | 
| 510 | Siegen Observatory |  | NRW | Siegen | 
| 511 | Haute-Provence Observatory (Observatoire de Haute-Provence; OHP) |  | PACA | Haute Provence | 
| 512 | Leiden Observatory (Sterrewacht Leiden; before 1860) |  | Zuid Holland | Leiden (before 1860) | 
| 513 | Lyons Observatory |  | ARA | Lyons | 
| 514 | Mundenheim Observatory (1907–1913) |  | RP | Mundenheim (1907-1913) | 
| 515 | Dhaun Observatory (Volkssternwarte Dhaun) |  | RP | Volkssternwarte Dhaun, near Kirn | 
| 516 | Hamburg Observatory (before 1909), German Empire |  | H | Hamburg (before 1909) | 
| 517 | Geneva Observatory (Observatory of Geneva) (from 1967) | .svg.png.webp) | SWF | Geneva (from 1967) | 
| 518 | Marine Observatory |  | H | Marine Observatory, Hamburg | 
| 519 | Meschede Observatory |  | NRW | Meschede | 
| 520 | Bonn Observatory |  | NRW | Bonn | 
| 521 | Remeis Observatory (Dr. Remeis-Sternwarte) |  | FB | Remeis Observatory, Bamberg | 
| 522 | Observatory of Strasbourg (Observatoire de Strasbourg) |  | GE | Strasbourg | 
| 523 | Frankfurt Observatory |  | HE | Frankfurt | 
| 524 | Mannheim Observatory |  | BW | Mannheim | 
| 525 | Marburg Observatory Src |  | HE | Marburg | 
| 526 | Kiel Observatory |  | SH | Kiel | 
| 527 | Altona Observatory (Sternwarte Altona) |  | H | Altona | 
| 528 | Göttingen Observatory |  | NI | Göttingen | 
| 529 | Christiania Observatory |  | - | Christiania | 
| 530 | Lübeck Observatory |  | SH | Lubeck | 
| 531 | Collegio Romano Observatory (Osservatorio del Collegio Romano) |  | La | Collegio Romano, Rome | 
| 532 | Bogenhausen Observatory (1819–1938) (de:Universitäts-Sternwarte München; Bogenhausener Sternwarte; Sternwarte zu Bogenhausen) Königlichen Src |  | FB | Munich | 
| 533 | Padua Observatory |  | V | Padua | 
| 534 | Leipzig Observatory (since 1861) |  | SN | Leipzig (since 1861) | 
| 535 | Palermo Astronomical Observatory (Osservatorio Astronomico di Palermo "Giuseppe S. Vaiana") |  | Si | Palermo | 
| 536 | Babelsberg Observatory (Berlin Observatory after 1913) |  | BB | Berlin-Babelsberg | 
| 537 | Urania Observatory of Berlin; Berlin Urania Observatory (Urania Sternwarte) |  | B | Urania Observatory, Berlin | 
| 538 | Austrian Naval Observatory or Pola Observatory; (Sternwarte der kaiserlichen und königlichen Kriegsmarine in Pola; Marine-Sternwarte Pola) located in Pola, now Pula, Croatia |  | - | Pola | 
| 539 | Kremsmünster Observatory Scr |  | UA | Kremsmunster | 
| 540 | Davidschlag Observatory (Linz Observatory; Private Observatory Meyer/Obermair; Sternwarte Davidschlag) |  | UA | Linz | 
| 541 | Štefánik's Observatory (Prague Observatory) |  | Prague | Prague | 
| 542 | Falkensee Observatory |  | BB | Falkensee | 
| 543 | Leipzig Observatory (before 1861), German Empire |  .svg.png.webp) | SN | Leipzig (before 1861) | 
| 544 | Wilhelm Foerster Observatory (Wilhelm-Foerster-Sternwarte) |  | B | Schöneberg, Berlin | 
| 545 | Vienna Observatory (before 1879), Austria-Hungary |  | Vi | Vienna (before 1879) | 
| 546 | Oppolzer Observatory |  | Vi | Oppolzer Observatory, Vienna | 
| 547 | Breslau Observatory (former German Empire; now: Wroclaw University Astronomical Observatory) |  | LSV | Wroclaw, former Breslau | 
| 548 | Berlin Observatory (1835–1913) (Berliner Sternwarte, Berlin Observatory, before 1913) |  | B | Berlin (1835-1913) | 
| 549 | Uppsala Astronomical Observatory (UAO; Astronomiska observatoriet i Uppsala) |  | Up | Uppsala | 
| 550 | Schwerin Observatory |  | MV | Schwerin | 
| 551 | Hurbanovo Observatory, formerly O'Gyalla |  | Nitra | Hurbanovo, formerly O'Gyalla | 
| 552 | San Vittore Observatory (Osservatorio San Vittore) |  | ER | Osservatorio S. Vittore, Bologna | 
| 553 | Chorzów Observatory |  | SV | Chorzow | 
| 554 | Burgsolms Observatory |  | NI | Burgsolms Observatory, Wetzlar | 
| 555 | Cracow-Fort Skała Observatory |  | LPV | Cracow-Fort Skala | 
| 556 | Reintal Observatory |  | FB | Reintal, near Munich | 
| 557 | Ondřejov Observatory (Observatoř Ondřejov); observers: Marek Wolf, Josef Hanuš[2] |  | SK | Ondrejov | 
| 558 | Warsaw Observatory |  | MV | Warsaw | 
| 559 | Serra La Nave Observatory |  | Si | Serra La Nave | 
| 560 | Madonna di Dossobuono Observatory (Osservatorio Madonna di Dossobuono) |  | V | Madonna di Dossobuono | 
| 561 | Piszkéstető Station – of the Konkoly Obs., Budapest,see #461 and #053 |  | - | Piszkesteto Stn. (Konkoly) | 
| 562 | Figl Observatory |  | LA | Figl Observatory, Vienna | 
| 563 | Seewalchen Observatory |  | UA | Seewalchen | 
| 564 | Herrsching Observatory |  | FB | Herrsching | 
| 565 | Bassano Bresciano Observatory (Osservatorio Astronomico di Bassano Bresciano) |  | Lo | Bassano Bresciano | 
| 566 | Haleakala-NEAT/GEODSS |  | HI | Haleakala-NEAT/GEODSS | 
| 567 | Chions Observatory (Osservatorio di Chions; Chaonis Observatory) |  | F | Chions | 
| 568 | Mauna Kea Observatory |  | HI | Mauna Kea | 
| 569 | Helsinki Observatory |  | Uusimaa | Helsinki | 
| 570 | Vilnius Observatory (since 1939) |  | - | Vilnius (since 1939) | 
| 571 | Cavriana Observatory (Osservatorio "Giordano Bruno") |  | Lo | Cavriana | 
| 572 | Cologne Observatory |  | NRW | Cologne | 
| 573 | Eldagsen Observatory |  | NI | Eldagsen | 
| 574 | Gottolengo Observatory |  | Lo | Gottolengo | 
| 575 | La Chaux de Fonds Observatory | .svg.png.webp) | SWF | La Chaux de Fonds | 
| 576 | Burwash Observatory |  | ENG | Burwash | 
| 577 | Metzerlen Observatory | .svg.png.webp) | SWG | Metzerlen Observatory | 
| 578 | Linden Observatory | .svg.png.webp)  | Gauteng | Linden Observatory | 
| 579 | Novi Ligure Observatory |  | P | Novi Ligure | 
| 580 | Graz University Observatory |  | S | Graz | 
| 581 | Sedgefield Observatory |  | WC | Sedgefield | 
| 582 | Orwell Park Observatory |  | ENG | Orwell Park | 
| 583 | Mayaky (observation station) |  | Odesa | Mayaky, Odesa Raion, Odesa Oblast | 
| 584 | Leningrad Observatory |  | Saint Petersburg | Leningrad | 
| 585 | Lisnyky (observation station) |  | Lisnyky. Kyiv region. Ukraine. | Lisnyky (observation station) | 
| 586 | Pic du Midi Observatory (Observatoire du Pic du Midi) |  | Occ | Pic du Midi | 
| 587 | Sormano Astronomical Observatory (Osservatorio Astronomico Sormano) |  | Lo | Sormano | 
| 588 | Eremo di Tizzano Observatory |  | ER | Eremo di Tizzano | 
| 589 | Santa Lucia Stroncone Astronomical Observatory (Osservatorio Astrometrico Santa Lucia Stroncone); observers: Antonio Vagnozzi[2] |  | U | Santa Lucia Stroncone | 
| 590 | Metzerlen Observatory | .svg.png.webp) | SWG | Metzerlen | 
| 591 | Resse Observatory |  | NI | Resse Observatory | 
| 592 | Solingen Observatory |  | NRW | Solingen | 
| 593 | Monte Argentario Observatory |  | Tu | Monte Argentario | 
| 594 | Monte Autore Observatory |  | La | Monte Autore | 
| 595 | Farra d'Isonzo Observatory (Astronomical Observatory of Farra d'Isonzo; Osservatorio Astronomico di Farra d'Isonzo) |  | F | Farra d'Isonzo | 
| 596 | Colleverde di Guidonia Observatory (Osservatorio Colleverde di Guidonia) |  | La | Colleverde di Guidonia | 
| 597 | Springe Observatory |  | NI | Springe | 
| 598 | Loiano Observatory (Osservatorio Astronomico di Loiano) |  | ER | Loiano | 
| 599 | Campo Imperatore Near-Earth Object Survey (CINEOS) |  | Ab | Campo Imperatore-CINEOS | 
| 600 | TLC Observatory |  | ER | TLC Observatory, Bologna | 
| 601 | Engelhardt Observatory (Engelhardt-Sternwarte) in Dresden |  | SN | Engelhardt Observatory, Dresden | 
| 602 | Urania Observatory |  | Vi | Urania Observatory, Vienna | 
| 603 | Bothkamp Observatory (Sternwarte Bothkamp), near Kiel Src |  | SH | Bothkamp | 
| 604 | Archenhold Observatory (Archenhold Sternwarte) |  | B | Archenhold Sternwarte, Berlin-Treptow | 
| 605 | Marl Observatory |  | NRW | Marl | 
| 606 | Norderstedt Observatory |  | SH | Norderstedt | 
| 607 | Hagen Observatory; not to be confused with: #B86 |  | NRW | Hagen Observatory, Ronkhausen | 
| 608 | Air Force Maui Optical and Supercomputing observatory (AMOS) Haleakala-AMOS |  | HI | Haleakala-AMOS | 
| 609 | Polino Observatory (Osservatorio Polino) |  | U | Osservatorio Polino | 
| 610 | Pianoro Observatory |  | ER | Pianoro | 
| 611 | Starkenburg Observatory (Heppenheim Observatory; Starkenburg-Sternwarte) |  | NI | Starkenburg Sternwarte, Heppenheim | 
| 612 | Lenkerbeck Observatory |  | NRW | Lenkerbeck | 
| 613 | Heisingen Observatory |  | NRW | Heisingen | 
| 614 | Soisy-sur-Seine Observatory |  | IDF | Soisy-sur-Seine | 
| 615 | Observatory of Saint-Veran (Src) |  | PACA | St. Veran | 
| 616 | Brno Observatory |  | South Moravia | Brno | 
| 617 | Arbonne-la-Forêt Observatory |  | IDF | Arbonne la Foret | 
| 618 | Martigues Observatory |  | PACA | Martigues | 
| 619 | Sabadell Observatory |  | CT | Sabadell | 
| 620 | Astronomical Observatory of Mallorca (Observatorio Astronómico de Mallorca); observer: Reiner Stoss, Salvador Sánchez, Jaume Nomen[2] |  | IB | Observatorio Astronomico de Mallorca | 
| 621 | Bergisch Gladbach Observatory |  | NRW | Bergisch Gladbach | 
| 622 | Oberwichtrach Observatory | .svg.png.webp) | SWG | Oberwichtrach | 
| 623 | Liège Observatory | .svg.png.webp) | WAL | Liege | 
| 624 | Dertingen Observatory |  | BW | Dertingen | 
| 625 | Air Force Maui Optical and Supercomputing observatory (AMOS) Kihei |  | HI | Kihei-AMOS Remote Maui Experimental Site | 
| 626 | Geel Observatory | .svg.png.webp) | VLG | Geel | 
| 627 | Blauvac Observatory (Observatoire de Blauvac) observer: René Roy[2] |  | PACA | Blauvac | 
| 628 | Turtle Star Observatory Src |  | NRW | Mulheim-Ruhr | 
| 629 | Szeged Observatory, JATE Observatory |  | - | Szeged Observatory | 
| 630 | Osenbach Observatory |  | GE | Osenbach | 
| 631 | Hamburg-Georgswerder |  | H | Hamburg-Georgswerder | 
| 632 | San Paolo a Mosciano Observatory |  | Tu | San Polo A Mosciano | 
| 633 | Romito Observatory |  | Lo | Romito | 
| 634 | Crolles Observatory |  | ARA | Crolles | 
| 635 | Pergignan Observatory |  | Occ | Pergignan | 
| 636 | Walter Hohmann Observatory (Essen Observatory) Src |  | NRW | Essen | 
| 637 | Hamburg-Himmelsmoor Observatory |  | H | Hamburg-Himmelsmoor | 
| 638 | Detmold Observatory |  | NRW | Detmold | 
| 639 | Dresden Observatory |  | SN | Dresden | 
| 640 | Senftenberger Observatory (Senftenberger Sternwarte) |  | SK | Senftenberger Sternwarte | 
| 641 | Overberg Observatory |  | WC | Overberg | 
| 642 | Oak Bay | .svg.png.webp) | BC | Oak Bay, Victoria | 
| 643 | OCA-Anza Observatory (Orange County Astronomers – Anza) |  | CA | OCA-Anza Observatory | 
| 644 | Near-Earth Asteroid Tracking (NEAT) at (Palomar Observatory) |  | CA | Palomar Mountain/NEAT | 
| 645 | Sloan Digital Sky Survey (SDSS), Sunspot, at (Apache Point Observatory) |  | NM | Apache Point-Sloan Digital Sky Survey | 
| 646 | Santana Observatory: observer: Robert Stephens (see #G79, #U81)[2] |  | CA | Santana Observatory, Rancho Cucamonga | 
| 647 | Stone Finder Observatory | .svg.png.webp) | AB | Stone Finder Observatory, Calgary | 
| 648 | Winer Observatory |  | AZ | Winer Observatory, Sonoita | 
| 649 | Powell Observatory |  | KS | Powell Observatory, Louisburg | 
| 650 | Temecula Observatory |  | CA | Temecula | 
| 651 | Grasslands Observatory |  | AZ | Grasslands Observatory, Tucson | 
| 652 | Rock Finder Observatory | .svg.png.webp) | AB | Rock Finder Observatory, Calgary | 
| 653 | Torus Observatory |  | WA | Torus Observatory, Buckley | 
| 654 | Table Mountain Observatory, Wrightwood-PHMC |  | CA | Table Mountain Observatory, Wrightwood-PHMC | 
| 655 | Sooke Observatory | .svg.png.webp) | BC | Sooke | 
| 656 | Victoria Observatory | .svg.png.webp) | BC | Victoria | 
| 657 | Climenhaga Observatory | .svg.png.webp) | BC | Climenhaga Observatory, Victoria | 
| 658 | National Research Council of Canada (Dominion Astrophysical Observatory, Saanich) | .svg.png.webp) | BC | National Research Council of Canada | 
| 659 | Heron Cove Observatory, Orcas |  | WA | Heron Cove Observatory, Orcas | 
| 660 | Leuschner Observatory, Berkeley |  | CA | Leuschner Observatory, Berkeley | 
| 661 | Rothney Astrophysical Observatory, Priddis | .svg.png.webp) | AB | Rothney Astrophysical Observatory, Priddis | 
| 662 | Lick Observatory, Mount Hamilton |  | CA | Lick Observatory, Mount Hamilton | 
| 663 | Red Mountain Observatory, Ivins |  | UT | Red Mountain Observatory | 
| 664 | Manastash Ridge Observatory, Ellensburg |  | WA | Manastash Ridge Observatory | 
| 665 | Wallis Observatory |  | CA | Wallis Observatory | 
| 666 | Moorpark College Observatory, Ventura County |  | CA | Moorpark College Observatory | 
| 667 | Wanapum Dam Observatory |  | WA | Wanapum Dam | 
| 668 | San Emigdio Peak |  | CA | San Emigdio Peak | 
| 669 | Ojai Observatory |  | CA | Ojai | 
| 670 | Camarillo Observatory |  | CA | Camarillo | 
| 671 | Stony Ridge Observatory |  | CA | Stony Ridge | 
| 672 | Mount Wilson Observatory |  | CA | Mount Wilson | 
| 673 | Table Mountain Observatory |  | CA | Table Mountain Observatory, Wrightwood | 
| 674 | Ford Observatory |  | CA | Ford Observatory, Wrightwood | 
| 675 | Palomar Observatory |  | CA | Palomar Mountain | 
| 676 | San Clemente Observatory |  | CA | San Clemente | 
| 677 | Lake Arrowhead |  | CA | Lake Arrowhead | 
| 678 | Fountain Hills Observatory |  | AZ | Fountain Hills | 
| 679 | National Astronomical Observatory (Mexico) |  | Baja California | San Pedro Martir | 
| 680 | Los Angeles Observatory |  | CA | Los Angeles | 
| 681 | Calgary Observatory (Centre for Backyard Astrophysics) | .svg.png.webp) | AB | Calgary | 
| 682 | Crescent Butte Observatory; observer Edwin E. Sheridan |  | UT | Kanab | 
| 683 | Goodricke-Pigott Observatory, Tucson |  | AZ | Goodricke-Pigott Observatory, Tucson | 
| 684 | Prescott Observatory |  | AZ | Prescott | 
| 685 | Williams Observatory |  | AZ | Williams | 
| 686 | U. of Minn. Infrared Obs., Mt. Lemmon (UMN Mount Lemmon Observing Facility) |  | AZ | U. of Minn. Infrared Obs., Mt. Lemmon | 
| 687 | Northern Arizona University |  | AZ | Northern Arizona University, Flagstaff | 
| 688 | Lowell Observatory, Anderson Mesa Station |  | AZ | Lowell Observatory, Anderson Mesa Station | 
| 689 | United States Naval Observatory Flagstaff Station (NOFS) |  | AZ | U.S. Naval Observatory, Flagstaff | 
| 690 | Lowell Observatory; observer: Brian Skiff |  | AZ | Lowell Observatory, Flagstaff | 
| 691 | Spacewatch at Kitt Peak, Steward Observatory (0.9-meter telescope) |  | AZ | Steward Observatory, Kitt Peak-Spacewatch | 
| 692 | Steward Observatory |  | AZ | Steward Observatory, Tucson | 
| 693 | Catalina Station |  | AZ | Catalina Station, Tucson | 
| 694 | Tumamoc Hill at Steward Observatory |  | AZ | Tumamoc Hill, Tucson | 
| 695 | Kitt Peak National Observatory |  | AZ | Kitt Peak | 
| 696 | Fred Lawrence Whipple Observatory |  | AZ | Whipple Observatory, Mt. Hopkins | 
| 697 | MDM Observatory at Kitt Peak, McGraw-Hill |  | AZ | Kitt Peak, McGraw-Hill | 
| 698 | Mt. Bigelow |  | AZ | Mt. Bigelow | 
| 699 | Lowell Observatory Near-Earth-Object Search (LONEOS) at Anderson Mesa Station, Lowell Observatory |  | AZ | Lowell Observatory-LONEOS | 
| 700 | Chinle Observatory |  | AZ | Chinle | 
| 701 | Junk Bond Observatory, Sierra Vista |  | AZ | Junk Bond Observatory, Sierra Vista | 
| 702 | Joint Observatory for cometary research (now the site of Magdalena Ridge Observatory) |  | NM | Joint Obs. for cometary research, Socorro | 
| 703 | Catalina Sky Survey, Tucson |  | AZ | Catalina Sky Survey | 
| 704 | Lincoln Laboratory ETS (Lincoln Laboratory's Experimental Test Site), Socorro, (also see LINEAR) |  | NM | Lincoln Laboratory ETS, New Mexico | 
| 705 | Apache Point, Sunspot (Apache Point Observatory) |  | NM | Apache Point | 
| 706 | Salida Observatory |  | CO | Salida | 
| 707 | Chamberlin field station |  | CO | Chamberlin field station | 
| 708 | Chamberlin Observatory, Denver |  | CO | Chamberlin Observatory, Denver | 
| 709 | W & B Observatory, Warren & Beverly" Offutt Observatory |  | NM | W & B Observatory, Cloudcroft | 
| 710 | MPO Observatory |  | CO | MPO Observatory, Florissant | 
| 711 | McDonald Observatory |  | TX | McDonald Observatory, Fort Davis | 
| 712 | USAF Academy Observatory |  | CO | USAF Academy Observatory, Colorado Springs | 
| 713 | Thornton Observatory; observer: Robert A. Koff (also see #H09) |  | CO | Thornton | 
| 714 | Bagdad Observatory |  | AZ | Bagdad | 
| 715 | Jornada Observatory |  | NM | Jornada Observatory, Las Cruces | 
| 716 | Palmer Divide Observatory; observer: Brian D. Warner |  | CO | Palmer Divide Observatory, Colorado Springs | 
| 717 | Prude Ranch Observatory |  | TX | Prude Ranch | 
| 718 | University of Utah, Tooele |  | UT | Tooele | 
| 719 | Etscorn Observatory (Frank T. Etscorn Campus Observatory, Socorro New Mexico Tech Astronomy Club Src |  | NM | Etscorn Observatory | 
| 720 | Universidad de Monterrey Observatory, Nuevo León |  | - | Universidad de Monterrey | 
| 721 | Lime Creek Observatory |  | NE | Lime Creek | 
| 722 | Missouri City Observatory |  | TX | Missouri City | 
| 723 | Cottonwood Observatory |  | OK | Cottonwood Observatory, Ada | 
| 724 | National Observatory (Observatorio Astronómico Nacional; Observatorio de Tacubaya) |  | - | National Observatory, Tacubaya | 
| 725 | Fair Oaks Ranch Observatory |  | TX | Fair Oaks Ranch | 
| 726 | Fire in the Sky Observatory |  | MN | Brainerd | 
| 727 | Zeno Observatory |  | OK | Zeno Observatory, Edmond | 
| 728 | Corpus Christi |  | TX | Corpus Christi | 
| 729 | Glenlea Astronomical Observatory | .svg.png.webp) | MB | Glenlea Astronomical Observatory, Winnipeg | 
| 730 | University of North Dakota, Grand Forks |  | ND | University of North Dakota, Grand Forks | 
| 731 | Rose-Hulman Observatory |  | IN | Rose-Hulman Observatory, Terre Haute | 
| 732 | Oaxaca Observatory |  | - | Oaxaca | 
| 733 | Allen Observatory |  | TX | Allen, Texas | 
| 734 | Farpoint Observatory |  | KS | Farpoint Observatory, Eskridge | 
| 735 | George Observatory (Needville Observatory) |  | TX | George Observatory, Needville | 
| 736 | Houston Observatory |  | TX | Houston | 
| 737 | New Bullpen Observatory |  | GA | New Bullpen Observatory, Alpharetta | 
| 738 | Observatory of the State University of Missouri |  | MO | Observatory of the State University of Missouri | 
| 739 | Sunflower Observatory |  | KS | Sunflower Observatory, Olathe | 
| 740 | SFA Observatory |  | TX | SFA Observatory, Nacogdoches | 
| 741 | Goodsell Observatory |  | MN | Goodsell Observatory, Northfield | 
| 742 | Drake University |  | IA | Drake University, Des Moines | 
| 743 | University of Minnesota |  | MN | University of Minnesota, Minneapolis | 
| 744 | Doyan Rose Observatory |  | IN | Doyan Rose Observatory, Indianapolis | 
| 745 | Glasgow Observatory |  | MO | Morrison Observatory, Glasgow | 
| 746 | Brooks Astronomical Observatory |  | MI | Brooks Observatory, Mt. Pleasant | 
| 747 | Highland Road Park Observatory (a.k.a. Baton Rouge Observatory) |  | LA | Highland Road Park Observatory | 
| 748 | Van Allen Observatory |  | IA | Van Allen Observatory, Iowa City | 
| 749 | Oakwood Observatory |  | GA | Oakwood | 
| 750 | Hobbs Observatory |  | WI | Hobbs Observatory, Fall Creek | 
| 751 | Lake Saint Louis Observatory |  | MO | Lake Saint Louis | 
| 752 | Puckett Observatory |  | GA | Puckett Observatory, Mountain Town | 
| 753 | Washburn Observatory |  | WI | Washburn Observatory, Madison | 
| 754 | Yerkes Observatory |  | WI | Yerkes Observatory, Williams Bay | 
| 755 | Optec Observatory |  | MI | Optec Observatory | 
| 756 | Dearborn Observatory |  | IL | Dearborn Observatory, Evanston | 
| 757 | High Point Observatory |  | NC | High Point | 
| 758 | Astronaut Memorial Planetarium & Observatory (BCC Observatory; Brevard Community College Observatory) |  | FL | BCC Observatory, Cocoa | 
| 759 | Nashville Observatory (Vanderbilt's Dyer Observatory) |  | TN | Nashville | 
| 760 | Goethe Link Observatory |  | IN | Goethe Link Observatory, Brooklyn | 
| 761 | Quail Hollow Observatory |  | FL | Zephyrhills | 
| 762 | Four Winds Observatory |  | MI | Four Winds Observatory, Lake Leelanau | 
| 763 | King City Observatory | .svg.png.webp) | ON | King City | 
| 764 | Puckett Observatory |  | GA | Puckett Observatory, Stone Mountain | 
| 765 | Cincinnati Observatory |  | OH | Cincinnati | 
| 766 | Michigan State University Observatory |  | MI | Michigan State University Obs., East Lansing | 
| 767 | Angell Hall Observatory |  | MI | Ann Arbor | 
| 768 | UM-Dearborn Observatory |  | MI | Dearborn Observatory | 
| 769 | McMillin Observatory |  | OH | McMillin Observatory, Columbus | 
| 770 | Crescent Moon Observatory |  | OH | Crescent Moon Observatory, Columbus | 
| 771 | Boyeros Observatory (Observatorio de Rancho Boyeros) |  | - | Boyeros Observatory, Havana | 
| 772 | Boltwood Observatory | .svg.png.webp) | ON | Boltwood Observatory, Stittsville | 
| 773 | Warner and Swasey Observatory – Cleveland |  | OH | Warner and Swasey Observatory, Cleveland | 
| 774 | Warner and Swasey Nassau Station – Chardon |  | OH | Warner and Swasey Nassau Station, Chardon | 
| 775 | Sayre Observatory |  | PA | Sayre Observatory, South Bethlehem | 
| 776 | Foggy Bottom Observatory |  | NY | Foggy Bottom, Hamilton | 
| 777 | Toronto Observatory | .svg.png.webp) | ON | Toronto | 
| 778 | Allegheny Observatory |  | PA | Allegheny Observatory, Pittsburgh | 
| 779 | David Dunlap Observatory | .svg.png.webp) | ON | David Dunlap Observatory, Richmond Hill | 
| 780 | Leander McCormick Observatory |  | VA | Leander McCormick Observatory, Charlottesville | 
| 781 | Quito Observatory |  | - | Quito | 
| 782 | Quito, comet astrograph station |  | - | Quito, comet astrograph station | 
| 783 | Rixeyville Observatory |  | VA | Rixeyville | 
| 784 | Stull Observatory |  | NY | Stull Observatory, Alfred University | 
| 785 | Fitz-Randolph Observatory |  | NJ | Fitz-Randolph Observatory, Princeton | 
| 786 | United States Naval Observatory (USNO; since 1893) |  | D.C. | U.S. Naval Obs., Washington (since 1893) | 
| 787 | United States Naval Observatory (USNO; before 1893) |  | D.C. | U.S. Naval Obs., Washington (before 1893) | 
| 788 | Mount Cuba Observatory |  | DE | Mount Cuba Observatory, Wilmington | 
| 789 | Litchfield Observatory (Hamilton College), Oneida County; not to be confused with #845 |  | NY | Litchfield Observatory, Clinton | 
| 790 | Dominion Observatory | .svg.png.webp) | ON | Dominion Observatory, Ottawa | 
| 791 | Flower and Cook Observatory |  | PA | Flower and Cook Observatory, Philadelphia | 
| 792 | University of Rhode Island |  | RI | University of Rhode Island, Quonochontaug | 
| 793 | Dudley Observatory (before 1893) |  | NY | Dudley Observatory, Albany (before 1893) | 
| 794 | Vassar College Observatory |  | NY | Vassar College Observatory, Poughkeepsie | 
| 795 | Rutherford Observatory |  | NY | Rutherford | 
| 796 | Stamford Observatory |  | CT | Stamford | 
| 797 | Yale University Observatory – New Haven |  | CT | Yale Observatory, New Haven | 
| 798 | Yale University Observatory – Bethany |  | CT | Yale Observatory, Bethany | 
| 799 | Winchester Observatory |  | MA | Winchester | 
| 800 | Boyden Station of the Harvard Observatory |  | - | Harvard Observatory, Arequipa | 
| 801 | Oak Ridge Observatory (George R. Agassiz Station) |  | MA | Oak Ridge Observatory | 
| 802 | Harvard College Observatory |  | MA | Harvard Observatory, Cambridge | 
| 803 | Taunton Observatory |  | MA | Taunton | 
| 804 | Santiago-San Bernardo Observatory |  | - | Santiago-San Bernardo | 
| 805 | Cerro El Roble Station (of Chile's National Astronomical Observatory, see #806), Santiago |  | - | Santiago-Cerro El Roble | 
| 806 | National Astronomical Observatory (Chile) |  | - | Santiago-Cerro Calán | 
| 807 | Cerro Tololo Inter-American Observatory |  | Co | Cerro Tololo Observatory, La Serena | 
| 808 | Félix Aguilar Observatory (Observatorio Félix Aguilar; Observatorio Astronómico Félix Aguilar; Dr. Carlos U. Cesco Observatory; Estación de Altura Carlos Ulrico Cesco) |  | J | El Leoncito | 
| 809 | La Silla Observatory of the European Southern Observatory (ESO) |  | Co | European Southern Observatory, La Silla | 
| 810 | George R. Wallace Jr. Astrophysical Observatory (WAO) |  | MA | Wallace Observatory, Westford | 
| 811 | Maria Mitchell Observatory |  | MA | Maria Mitchell Observatory, Nantucket | 
| 812 | Viña del Mar Observatory |  | - | Vina del Mar | 
| 813 | Santiago-Quinta Normal (1862–1920) (see #806, National Astronomical Observatory) |  | - | Santiago-Quinta Normal (1862-1920) | 
| 814 | North Scituate Observatory |  | RI | North Scituate | 
| 815 | Santiago-Santa Lucia (1849–1861) (see #806, National Astronomical Observatory) |  | - | Santiago-Santa Lucia (1849-1861) | 
| 816 | Rand Observatory |  | NY | Rand Observatory | 
| 817 | Sudbury Observatory |  | MA | Sudbury | 
| 818 | Gémeaux Observatory (Observatoire Gémeaux) | .svg.png.webp) | QC | Gemeaux Observatory, Laval | 
| 819 | Val-des-Bois Observatory | .svg.png.webp) | QC | Val-des-Bois | 
| X16 | Astronomía Sigma Octante | Bo | Cochabamba | |
| 820 | Tarija Observatory | .svg.png.webp) | - | Tarija | 
| 821 | Bosque Alegre Station (Estación Astrofísica de Bosque Alegre) of the Córdoba Observatory, see #822 |  | Cór | Cordoba-Bosque Alegre | 
| 822 | Argentine National Observatory (Córdoba Observatory; Astronomical Observatory of Córdoba; Observatorio Astronómico de Córdoba) |  | Cór | Cordoba | 
| 823 | Scott Observatory (Fitchburg Observatory) Src |  | MA | Fitchburg | 
| 824 | Lake Clear Observatory |  | NY | Lake Clear | 
| 825 | Granville Observatory |  | MA | Granville | 
| 826 | Plessisville Observatory, Plessisville | .svg.png.webp) | QC | Plessissville | 
| 827 | Saint-Félicien Observatory | .svg.png.webp) | QC | Saint-Felicien | 
| 828 | Assonet Observatory |  | MA | Assonet | 
| 829 | Leoncito Astronomical Complex (Complejo Astronómico El Leoncito), also see #808 |  | J | Complejo Astronomico El Leoncito | 
| 830 | Hudson Observatory |  | NH | Hudson | 
| 831 | Rosemary Hill Observatory |  | FL | Rosemary Hill Observatory, University of Florida | 
| 832 | Etters Observatory |  | PA | Etters | 
| 833 | Mercedes Observatory (Observatorio Astronomico de Mercedes) |  | BA | Obs. Astronomico de Mercedes, Buenos Aires | 
| 834 | Argentinian Association of Amateur Astronomers (Asociación Argentina Amigos de la Astronomía; A.A.A.A., asaramas) |  | BA | Buenos Aires-AAAA | 
| 835 | Drum Hill Station |  | MA | Drum Hill Station, Chelmsford | 
| 836 | Furnace Brook Observatory |  | RI | Furnace Brook Observatory, Cranston | 
| 837 | Jupiter Observatory; Boca Raton Observatory at Boca Raton; observer: B. A. Segal Src |  | FL | Jupiter | 
| 838 | Dayton Observatory |  | OH | Dayton | 
| 839 | La Plata Astronomical Observatory (Observatorio Astronómico de La Plata) |  | LP | La Plata | 
| 840 | Flint Observatory |  | MI | Flint | 
| 841 | Martin Observatory |  | VA | Martin Observatory, Blacksburg | 
| 842 | Gettysburg College Observatory |  | PA | Gettysburg College Observatory | 
| 843 | Emerald Lane Observatory |  | AL | Emerald Lane Observatory, Decatur | 
| 844 | Los Molinos Observatory (Observatorio Astronómico Los Molinos) |  | - | Observatorio Astronomico Los Molinos | 
| 845 | Clinton B. Ford Observatory; not to be confused with #789 |  | NY | Ford Observatory, Ithaca | 
| 846 | Principia Astronomical Observatory |  | IL | Principia Astronomical Observatory, Elsah | 
| 847 | Lunar Cafe Observatory |  | MI | Lunar Cafe Observator, Flint | 
| 848 | Tenagra Observatory Src |  | OR | Tenagra Observatory, Cottage Grove | 
| 849 | Everstar Observatory (EverStaR Observatory) |  | KS | Everstar Observatory, Olathe | 
| 850 | Cordell-Lorenz Observatory |  | TN | Cordell-Lorenz Observatory, Sewanee | 
| 851 | Burke-Gaffney Observatory | .svg.png.webp) | NS | Burke-Gaffney Observatory, Halifax | 
| 852 | River Moss Observatory |  | MO | River Moss Observatory, St. Peters | 
| 853 | Biosphere 2 Observatory |  | AZ | Biosphere 2 Observatory | 
| 854 | Sabino Canyon Observatory |  | AZ | Sabino Canyon Observatory, Tucson | 
| 855 | Wayside Observatory |  | MN | Wayside Observatory, Minnetonka | 
| 856 | Roach Motel Observatory |  | CA | Riverside | 
| 857 | Iowa Robotic Observatory |  | AZ | Iowa Robotic Observatory, Sonoita | 
| 858 | Tebbutt Observatory |  | NM | Tebbutt Observatory, Edgewood | 
| 859 | Wykrota Observatory (Observatório Wykrota) at CEAMIG (Centro de Estudos Astronômicos de Minas Gerais) |  | MG | Wykrota Observatory-CEAMIG | 
| 860 | Valinhos Observatory |  | SP | Valinhos | 
| 861 | Barão Geraldo Observatory |  | SP | Barao Geraldo | 
| 862 | Saku Observatory |  | - | Saku | 
| 863 | Furukawa Observatory |  | - | Furukawa | 
| 864 | Kumamoto Civil Astronomical Observatory (KCAO) |  | - | Kumamoto | 
| 865 | Emmy Observatory |  | NY | Emmy Observatory, New Paltz | 
| 866 | United States Naval Academy |  | MD | U.S. Naval Academy, Michelson | 
| 867 | Saji Observatory |  | - | Saji Observatory | 
| 868 | Hidaka Observatory |  | - | Hidaka Observatory | 
| 869 | Tosa Observatory |  | - | Tosa | 
| 870 | Campinas Observatory (Observatório de Campinas; Observatório Municipal de Campinas "Jean Nicolini") |  | SP | Campinas | 
| 871 | Akou Observatory |  | - | Akou | 
| 872 | Tokushima-Kainan Astronomical Observatory |  | 36 | Tokushima | 
| 873 | Kurashiki Observatory, Okayama Astrophysical Observatory |  | 33 | Kurashiki Observatory | 
| 874 | Pico dos Dias Observatory (Observatório Pico dos Dias) |  | MG | Observatorio do Pico dos Dias, Itajubá | 
| 875 | Yorii Observatory |  | - | Yorii | 
| 876 | Honjo Observatory |  | - | Honjo | 
| 877 | Okutama Observatory |  | - | Okutama | 
| 878 | Kagiya Observatory |  | - | Kagiya | 
| 879 | Tōkai Observatory |  | 23 | Tokai | 
| 880 | National Observatory (Brazil) (Rio de Janeiro Observatory; Observatório Nacional; ON) |  | RJ | Rio de Janeiro | 
| 881 | Toyota Observatory |  | 23 | Toyota | 
| 882 | JCPM Oi Station |  | - | JCPM Oi Station | 
| 883 | Shizuoka Observatory |  | 22 | Shizuoka | 
| 884 | Kawane Observatory |  | - | Kawane | 
| 885 | JCPM Yakiimo Station |  | 22 | JCPM Yakiimo Station | 
| 886 | Mishima Observatory (at Susono, Shizuoka and Mishima, Shizuoka) |  | 22 | Mishima | 
| 887 | Ojima Observatory |  | 10 | Ojima | 
| 888 | Gekko Observatory |  | 22 | Gekko | 
| 889 | Karasuyama Observatory |  | - | Karasuyama | 
| 890 | JCPM Tone Station |  | - | JCPM Tone Station | 
| 891 | JCPM Kimachi Station |  | - | JCPM Kimachi Station | 
| 892 | YGCO Hoshikawa and Nagano Stations |  | 20 | YGCO Hoshikawa and Nagano Stations | 
| 893 | Sendai Astronomical Observatory (Sendai Municipal Observatory) |  | - | Sendai Municipal Observatory | 
| 894 | Kiyosato Observatory |  | - | Kiyosato | 
| 895 | Hatamae Observatory |  | - | Hatamae | 
| 896 | Yatsugatake South Base Observatory (near #386 Yatsugatake-Kobuchizawa) |  | 13 | Yatsugatake South Base Observatory | 
| 897 | YGCO Chiyoda Station (YGCO: Yamaneko Group of Comet Observers) |  | - | YGCO Chiyoda Station | 
| 898 | Fujieda Observatory |  | 22 | Fujieda | 
| 899 | Toma Observatory |  | - | Toma | 
| 900 | Moriyama Observatory |  | 25 | Moriyama | 
| 901 | Tajimi Observatory |  | 21 | Tajimi | 
| 902 | Ootake Observatory |  | - | Ootake | 
| 903 | Fukuchiyama and Kannabe Observatory |  | - | Fukuchiyama and Kannabe | 
| 904 | Go-Chome and Kobe-Suma Observatory |  | - | Go-Chome and Kobe-Suma | 
| 905 | Nachi-Katsuura Observatory |  | 30 | Nachi-Katsuura Observatory | 
| 906 | Cobram Observatory | .svg.png.webp) | Vic | Cobram | 
| 907 | Melbourne Observatory | .svg.png.webp) | Vic | Melbourne | 
| 908 | Toyama Observatory |  | - | Toyama | 
| 909 | Snohomish Hilltop Observatory |  | WA | Snohomish Hilltop Observatory | 
| 910 | OCA–DLR Asteroid Survey (ODAS) at Caussols |  | - | Caussols-ODAS | 
| 911 | Collins Observatory (Eileen M. Collins Observatory), Elmira-Corning Astronomical Society ("Elmira"), Corning |  | NY | Collins Observatory, Corning Community College | 
| 912 | Carbuncle Hill Observatory; observer: Donald Pray (also see #I00) |  | RI | Carbuncle Hill Observatory, Greene | 
| 913 | Kappa Crucis Observatory (Observatorio Kappa Crucis) |  | - | Observatorio Kappa Crucis, Montevideo | 
| 914 | Underwood Observatory |  | MA | Underwood Observatory, Hubbardston | 
| 915 | River Oaks Observatory |  | TX | River Oaks Observatory, New Braunfels | 
| 916 | Oakley Observatory |  | IN | Oakley Observatory, Terre Haute | 
| 917 | Pacific Lutheran University Keck Observatory |  | WA | Pacific Lutheran University Keck Observatory | 
| 918 | Badlands Observatory |  | SD | Badlands Observatory, Quinn | 
| 919 | Desert Beaver Observatory |  | AZ | Desert Beaver Observatory | 
| 920 | RIT Observatory (Rochester Institute of Technology) |  | NY | RIT Observatory, Rochester | 
| 921 | SW Institute for Space Research |  | NM | SW Institute for Space Research, Cloudcroft | 
| 922 | Timberland Observatory |  | AL | Timberland Observatory, Decatur | 
| 923 | Bradstreet Observatory |  | PA | The Bradstreet Observatory, St. Davids | 
| 924 | Cégep de Trois-Rivières Observatory (Observatoire du Cégep de Trois-Rivières) | .svg.png.webp) | - | Observatoire du Cegep de Trois-Rivieres | 
| 925 | Palominas Observatory |  | AZ | Palominas Observatory | 
| 926 | Tenagra II Observatory |  | AZ | Tenagra II Observatory, Nogales | 
| 927 | Madison-YRS |  | WI | Madison-YRS | 
| 928 | Moonedge Observatory |  | NY | Moonedge Observatory, Northport | 
| 929 | Blackberry Observatory |  | LA | Port Allen | 
| 930 | Southern Stars Observatory |  | - | Southern Stars Observatory, Tahiti | 
| 931 | Punaauia Observatory, Puna'auia |  | - | Punaauia | 
| 932 | John J. McCarthy Observatory |  | CT | John J. McCarthy Obs., New Milford | 
| 933 | Rockland Observatory |  | AZ | Rockland Observatory, Sierra Vista | 
| 934 | Poway Valley Observatory |  | CA | Poway Valley | 
| 935 | Wyrick Observatory |  | VA | Wyrick Observatory, Haymarket | 
| 936 | Ibis Observatory |  | KS | Ibis Observatory, Manhattan | 
| 937 | Bradbury Observatory |  | - | Bradbury Observatory, Stockton-on-Tees | 
| 938 | Linhaceira Observatory; observer: Rui Goncalves[2] |  | - | Linhaceira | 
| 939 | Rodeno Observatory (Observatorio Rodeno) |  | - | Observatorio Rodeno | 
| 940 | Waterlooville Observatory |  | - | Waterlooville | 
| 941 | Pla D'Arguines Observatory (Observatorio Astronomico Pla D'Arguines) |  | - | Observatorio Pla D'Arguines | 
| 942 | Grantham Observatory |  | - | Grantham | 
| 943 | Peverell Observatory |  | - | Peverell | 
| 944 | Geminis Observatory (Observatorio Geminis, also see #I30 in Argentina) |  | - | Observatorio Geminis, Dos Hermanas | 
| 945 | Monte Deva Observatory (Observatorio Monte Deva) |  | - | Observatorio Monte Deva | 
| 946 | Ametlla de Mar Observatory |  | CT | Ametlla de Mar | 
| 947 | Saint-Sulpice Observatory (Observatoire de Saint-Sulpice) |  | - | Saint-Sulpice | 
| 948 | Pymoor Observatory |  | - | Pymoor | 
| 949 | Durtal Observatory |  | - | Durtal | 
| 950 | Roque de los Muchachos Observatory (La Palma Observatory) |  | CN | La Palma | 
| 951 | Highworth Observatory |  | ENG | Highworth | 
| 952 | Marxuquera Observatory (Observatori Astronòmic Marxuquera) |  | - | Marxuquera | 
| 953 | Montjoia Observatory |  | - | Montjoia | 
| 954 | Teide Observatory, Tenerife |  | CN | Teide Observatory | 
| 955 | Sassoeiros Observatory |  | - | Sassoeiros | 
| 956 | Pozuelo Observatory (Observatorio Pozuelo) |  | - | Observatorio Pozuelo | 
| 957 | Merignac Observatory |  | - | Merignac | 
| 958 | Dax Observatory (Observatoire de Dax) Src |  | - | Observatoire de Dax | 
| 959 | Ramonville Saint Agne Observatory |  | - | Ramonville Saint Agne | 
| 960 | Rolvenden Observatory |  | - | Rolvenden | 
| 961 | City Observatory (Calton Hill Observatory) |   | Edinburgh | City Observatory, Calton Hill, Edinburgh | 
| 962 | Gandia Observatory |  | - | Gandia | 
| 963 | Werrington Observatory |  | - | Werrington | 
| 964 | Southend Bradfield Observatory |  | - | Southend Bradfield | 
| 965 | Algarve Observatory (Portimão Observatory; Observação Astronómica no Algarve; Centro de Observação Astronómica no Algarve; COAA) |  | - | Observacao Astronomica no Algarve, Portimao | 
| 966 | Church Stretton Observatory |  | - | Church Stretton | 
| 967 | Greens Norton Observatory |  | - | Greens Norton | 
| 968 | Haverhill Observatory |  | - | Haverhill | 
| 969 | George Bishop's Observatory (1836–1861) |  | London | London-Regents Park | 
| 970 | Chelmsford Observatory |  | - | Chelmsford | 
| 971 | Lisbon Observatory |  | - | Lisbon | 
| 972 | Dun Echt Observatory |  | SCT | Dun Echt | 
| 973 | Harrow Observatory |  | - | Harrow | 
| 974 | Genoa Observatory |  | - | Genoa | 
| 975 | Valencia Observatory |  | V | Observatorio Astronomico de Valencia | 
| 976 | Leamington Spa Observatory |  | - | Leamington Spa | 
| 977 | Markree Observatory, County Sligo |  | - | Markree | 
| 978 | Conder Brow Observatory |  | - | Conder Brow | 
| 979 | South Wonston Observatory |  | - | South Wonston | 
| 980 | Lancaster Observatory |  | - | Lancaster | 
| 981 | Armagh Observatory |  | NIR | Armagh | 
| 982 | Dunsink Observatory |  | - | Dunsink Observatory, Dublin | 
| 983 | Real Instituto y Observatorio de la Armada |  | - | San Fernando | 
| 984 | Eastfield Observatory |  | - | Eastfield | 
| 985 | Telford Observatory |  | - | Telford | 
| 986 | Ascot Observatory Src |  | ENG | Ascot | 
| 987 | The Isle of Man Observatory (The Isle of Man Astronomical Society) Src |  | - | Isle of Man Observatory, Foxdale | 
| 988 | Glasgow Observatory |   | SCT | Glasgow | 
| 989 | Wilfred Hall Observatory |  | ENG | Wilfred Hall Observatory, Preston | 
| 990 | Royal Observatory of Madrid–Spanish National Observatory (Madrid Observatory; Observatorio Astronómico de Madrid) |  | MD | Madrid | 
| 991 | Liverpool Observatory (since 1867) |  | ENG | Liverpool (since 1867) | 
| 992 | Liverpool Observatory (before 1867) |  | ENG | Liverpool (before 1867) | 
| 993 | Woolston Observatory |  | - | Woolston Observatory | 
| 994 | Godalming Observatory |  | - | Godalming | 
| 995 | Durham University Observatory |  | - | Durham | 
| 996 | Radcliffe Observatory (moved to South Africa in 1939) |   | - | Oxford | 
| 997 | Hartwell Observatory Src |  | ENG | Hartwell | 
| 998 | UCL Observatory (University of London Observatory; London-Mill Hill Observatory) |  | - | London-Mill Hill | 
| 999 | Bordeaux Observatory (Observatoire de Bordeaux) |  | NA | Bordeaux-Floirac | 
| A00 | Gravesend Observatory |  | - | Gravesend | 
| A01 | Masia Cal Maciarol Modul 2 |  | - | Masia Cal Maciarol Modul 2 | 
| A02 | Masia Cal Maciarol Modul 8 |  | - | Masia Cal Maciarol Modul 8 | 
| A03 | Torredembarra |  | CT | Torredembarra | 
| A04 | Saint-Caprais |  | Gironde | Saint-Caprais | 
| A05 | Bélesta Observatory (Observatoire de Bélesta), Ariège |  | - | Belesta | 
| A06 | Mataró |  | CT | Mataro | 
| A07 | Uranoscope Observatory or Gretz-Armainvilliers Observatory; observer: Arnaud Leroy[2] |  | IDF | Gretz-Armainvilliers | 
| A08 | Malibert |  | - | Malibert | 
| A09 | Quincampoix |  | Normandy | Quincampoix | 
| A10 | Observatorio Astronómico de Conbera Src |  | CT | Observatorio Astronomico de Corbera | 
| A11 | Wormhout |  | Nord | Wormhout | 
| A12 | Sozzago Astronomical Station (Stazione Astronomica di Sozzago); observers: Federico Manzini, Roberto Crippa[2] |  | P | Stazione Astronomica di Sozzago | 
| A13 | Observatory Naef Épendes (Observatoire Robert A. Naef), Épendes | .svg.png.webp) | SWF | Observatoire Naef, Épendes | 
| A14 | Les Engarouines Observatory (Observatoire des Engarouines), Mallemort; observer: Laurent Bernasconi |  | - | Les Engarouines Observatory | 
| A15 | Josef Bresser Observatory (Josef-Bresser Sternwarte) Src |  | NRW | Josef Bresser Sternwarte, Borken | 
| A16 | Tentlingen Observatory (Sternwarte Tentlingen) Src | .svg.png.webp) | SWF | Tentlingen | 
| A17 | Guidestar Observatory |  | BW | Guidestar Observatory, Weinheim | 
| A18 | Herne Observatory |  | NRW | Herne | 
| A19 | Köln Observatory |  | NRW | Koln | 
| A20 | Sögel Observatory |  | NI | Sogel | 
| A21 | Irmtraut Observatory |  | RP | Irmtraut | 
| A22 | Starkenburg Observatory Heppenheim Asteroid Survey (SOHAS) (Starkenburg Sternwarte-SOHAS, see #611) Src |  | - | Starkenburg Sternwarte-SOHAS | 
| A23 | Weinheim Observatory (Sternwarte Weinheim) Src) |  | - | Weinheim | 
| A24 | New Millennium Observatory |  | Lo | New Millennium Observatory, Mozzate | 
| A25 | Nova Milanese |  | Lo | Nova Milanese | 
| A26 | Darmstadt Observatory |  | HE | Darmstadt | 
| A27 | Eridanus Observatory |  | NI | Eridanus Observatory, Langelsheim | 
| A28 | Kempten Observatory |  | FB | Kempten | 
| A29 | Santa Maria a Monte |  | Tu | Santa Maria a Monte | 
| A30 | Crespadoro Observatory |  | V | Crespadoro | 
| A31 | Corcaroli Observatory |  | - | Corcaroli Observatory | 
| A32 | Panker Observatory |  | - | Panker | 
| A33 | Kirchheim Observatory (Volkssternwarte Kirchheim) Src |  | - | Volkssternwarte Kirchheim | 
| A34 | Grosshabersdorf |  | FB | Grosshabersdorf | 
| A35 | Hormersdorf Observatory |  | SN | Hormersdorf Observatory | 
| A36 | Ganda di Aviatico |  | Lo | Ganda di Aviatico | 
| A37 | Müggelheim |  | B | Mueggelheim | 
| A38 | Campocatino Automated Telescope |  | - | Campocatino Automated Telescope, Collepardo | 
| A39 | Altenburg Observatory |  | TH | Altenburg | 
| A40 | Pieta Observatory |  | - | Pieta | 
| A41 | Rezman Observatory Src |  | - | Rezman Observatory, Kamnik | 
| A42 | Gehrden Observatory |  | - | Gehrden | 
| A43 | Inastars Observatory (before 2006) Src |  | - | Inastars Observatory, Potsdam (before 2006) | 
| A44 | Altschwendt Observatory |  | UA | Altschwendt | 
| A45 | Karrenkneul |  | - | Karrenkneul | 
| A46 | Lelekovice |  | - | Lelekovice | 
| A47 | Matera |  | - | Matera | 
| A48 | Povegliano Veronese |  | - | Povegliano Veronese | 
| A49 | Uppsala University-Ångström Laboratory |  | - | Uppsala-Angstrom | 
| A50 | Andrushivka Astronomical Observatory |  | - | Andrushivka Astronomical Observatory | 
| A51 | Danzig Observatory |  | - | Danzig | 
| A52 | Etyek Observatory |  | - | Etyek | 
| A53 | Peschiera del Garda Observatory |  | - | Peschiera del Garda | 
| A54 | Ostrorog Observatory |  | - | Ostrorog | 
| A55 | Vallemare di Borbona Observatory (Osservatorio Astronomico Vallemare di Borbona) src |  | - | Osservatorio Astronomico Vallemare di Borbona | 
| A56 | Parma Observatory |  | - | Parma | 
| A57 | Margherita Hack Observatory (Osservatorio Astronomico Margherita Hack) |  | - | Osservatorio Astron. Margherita Hack, Firenze | 
| A58 | Chalandray-Canotiers Observatory (Observatoire de Chalandray-Canotiers) |  | - | Observatoire de Chalandray-Canotiers | 
| A59 | Karlovy Vary Observatory |  | - | Karlovy Vary Observatory | 
| A60 | Yonsei Survey Telescopes for Astronomical Research (YSTAR) |  | NC | YSTAR-NEOPAT Station, Sutherland | 
| A61 | Tortona Observatory |  | P | Tortona | 
| A62 | Aichtal Observatory |  | BW | Aichtal | 
| A63 | Cosmosoz Observatory |  | Lyon | Cosmosoz Obs., Tassin la Demi Lune | 
| A64 | Couvaloup de St-Cergue Observatory |  | - | Couvaloup de St-Cergue | 
| A65 | Le Couvent de Lentin Observatory |  | - | Le Couvent de Lentin | 
| A66 | Livorno Observatory (Stazione Osservativa Astronomica, Livorno) |  | Tu | Stazione Osservativa Astronomica, Livorno | 
| A67 | Chiusa di Pesio Observatory |  | - | Chiusa di Pesio | 
| A68 | Swedenborg Observatory |  | - | Swedenborg Obs., Bockholmwik | 
| A69 | Osservatorio Palazzo Bindi Sergardi |  | - | Osservatorio Palazzo Bindi Sergardi | 
| A70 | Lumijoki |  | Ostrobothnia | Lumijoki | 
| A71 | Stixendorf |  | - | Stixendorf | 
| A72 | Radebeul Observatory (Sternwarte "Adolph Diesterweg" Radebeul) |  | - | Radebeul Observatory | 
| A73 | Penzing Astrometric Observatory |  | Vi | Penzing Astrometric Obs., Vienna | 
| A74 | Bergen-Enkheim Observatory Src |  | - | Bergen-Enkheim Observatory | 
| A75 | Fort Pius Observatory |  | CT | Fort Pius Observatory, Barcelona | 
| A76 | Andromeda Observatory |  | - | Andromeda Observatory, Miskolc | 
| A77 | Chante-Perdrix Observatory (Observatoire Chante-Perdrix); observers: Jérôme Caron, François Kugel[2] |  | Haute-Provence | Observatoire Chante-Perdrix, Dauban | 
| A78 | Stia |  | - | Stia | 
| A79 | Obshtestvo Observatory Zvezdno Src |  | - | Zvezdno Obshtestvo Observatory, Plana | 
| A80 | Lindenberg Observatory |  | BB | Lindenberg Observatory | 
| A81 | Balzaretto Observatory |  | La | Balzaretto Observatory, Rome | 
| A82 | Astronomical Observatory of Trieste (Osservatorio Astronomico di Trieste) |  | - | Osservatorio Astronomico di Trieste | 
| A83 | Jakokoski Observatory |  | - | Jakokoski Observatory | 
| A84 | TÜBİTAK National Observatory |  | - | TUBITAK National Observatory | 
| A85 | Odesa Astronomical Observatory |  | - | Odesa Astronomical Observatory, Kryzhanivka, Odesa Oblast | 
| A86 | Albigneux Observatory |  | - | Albigneux | 
| A87 | Rimbach Observatory |  | - | Rimbach | 
| A88 | Bolzaneto Observatory |  | Li | Bolzaneto | 
| A89 | Sterni Observatory |  | FB | Sterni Observatory, Kempten | 
| A90 | Sant Gervasi Observatory; observer: Hilari Pallares [2] |  | CT | Sant Gervasi Observatory, Barcelona | 
| A91 | Hankasalmi Observatory |  | - | Hankasalmi Observatory | 
| A92 | Urseanu Observatory |  | - | Urseanu Observatory, Bucharest | 
| A93 | Lucca Observatory |  | - | Lucca | 
| A94 | Cormons Observatory |  | - | Cormons | 
| A95 | Taurus Hill Observatory Src |  | EF | Taurus Hill Observatory, Varkaus | 
| A96 | Klosterneuburg Observatory |  | LA | Klosterneuburg | 
| A97 | Stammersdorf Observatory |  | Vi | Stammersdorf | 
| A98 | Taurus-1 Observatory |  | - | Taurus-1 Observatory, Baran | 
| A99 | Monte Baldo Observatory (Osservatorio del Monte Baldo) |  | - | Osservatorio del Monte Baldo | 
| B00 | Savigny-le-Temple Observatory, observer: Patrick Sogorb[2] |  | - | Savigny-le-Temple | 
| B01 | Taunus Observatory (Taunus-Sternwarte) Src |  | - | Taunus Observatory, Frankfurt | 
| B02 | Kielce Observatory |  | - | Kielce | 
| B03 | Alter Satzberg Observatory |  | Vi | Alter Satzberg, Vienna | 
| B04 | OAVdA Observatory (Osservatorio Astrononomico della Regione Autonoma Valle d'Aosta), Aosta Valley Src Archived 2017-12-27 at the Wayback Machine |  | - | OAVdA, Saint-Barthelemy | 
| B05 | Ka-Dar Observatory, Barybino Src |  | Moscow | Ka-Dar Observatory, Barybino | 
| B06 | Montseny Astronomical Observatory Src |  | - | Montseny Astronomical Observatory | 
| B07 | Camorino Observatory | .svg.png.webp) | SWI | Camorino | 
| B08 | San Lazzaro di Savena Observatory |  | ER | San Lazzaro di Savena | 
| B09 | Capannoli, Pietro Dora Vivarelli ASA Src |  | - | Capannoli | 
| B10 | Observatoire du Mas des Gres, Moydans (LightBuckets as of November 2011) Src |  | - | Observatoire des Baronnies Provencales, Moydans | 
| B11 | Cima Rest Observatory (Osservatorio Cima Rest), Imola |  | Lo | Osservatorio Cima Rest, Magasa | 
| B12 | Koschny Observatory Src |  | Zuid Holland | Koschny Observatory, Noordwijkerhout | 
| B13 | Osservatorio di Tradate |  | Lo | Osservatorio di Tradate | 
| B14 | Ca del Monte Observatory Src Archived 2019-06-27 at the Wayback Machine |  | - | Ca del Monte | 
| B15 | Inastars Observatory Src |  | - | Inastars Observatory, Potsdam (since 2006) | 
| B16 | 1st Moscow Gymnasium Observatory, Lipki |  | Moscow | 1st Moscow Gymnasium Observatory, Lipki | 
| B17 | AZT-8 Yevpatoria |  | - | AZT-8 Yevpatoria | 
| B18 | Terskol Observatory, on Mount Elbrus Src |  | North Caucasus | Terskol | 
| B19 | Observatori Iluro, Mataró |  | CT | Observatorio Iluro, Mataro | 
| B20 | Observatori Carmelita, Tiana |  | - | Observatorio Carmelita, Tiana | 
| B21 | Gaisberg Observatory (Sternwarte Gaisberg) in Schärding: observer Richard Gierlinger |  | UA | Gaisberg Observatory, Schaerding | 
| B22 | Observatori d'Àger, Barcelona |  | CT | Observatorio d'Ager | 
| B23 | Fiamene Src |  | - | Fiamene | 
| B24 | Cesson |  | - | Cesson | 
| B25 | Catania |  | - | Catania | 
| B26 | Observatoire des Terres Blanches, Reillanne |  | AHP | Observatoire des Terres Blanches, Reillanne | 
| B27 | Picard Observatory, St. Veit |  | - | Picard Observatory, St. Veit | 
| B28 | Mandi Observatory, Pagnacco |  | F | Mandi Observatory, Pagnacco | 
| B29 | L'Ampolla Observatory, Tarragona |  | - | L'Ampolla Observatory, Tarragona | 
| B30 | Szamotuly-Galowo |  | - | Szamotuly-Galowo | 
| B31 | Southern African Large Telescope (SALT), Sutherland |  | NC | Southern African Large Telescope, Sutherland | 
| B32 | Gelenau Observatory, Src |  | SN | Gelenau | 
| B33 | Libbiano Observatory, Peccioli AAAV |  | - | Libbiano Observatory, Peccioli | 
| B34 | Green Island Observatory, Geçitkale Src |  | - | Green Island Observatory, Gecitkale | 
| B35 | Bareket Observatory, Macabim |  | - | Bareket Observatory, Macabim | 
| B36 | Redshed Observatory, Kallham |  | UA | Redshed Observatory, Kallham | 
| B37 | Ametlla del Valles Observatory (Observatorio de L' Ametlla del Vallès), Barcelona; observer: Antonio Garrigós-Sánchez |  | CT | Obs. de L' Ametlla del Valles, Barcelona | 
| B38 | Santa Mama |  | - | Santa Mama | 
| B39 | Tradate |  | - | Tradate | 
| B40 | Skylive Observatory, Catania Italy Gruppo Astrofili Catanesi Src |  | - | Skylive Observatory, Catania | 
| B41 | Zlin Observatory |  | - | Zlin Observatory | 
| B42 | Vitebsk |  | - | Vitebsk | 
| B43 | Hennef |  | - | Hennef | 
| B44 | Eygalayes |  | - | Eygalayes | 
| B45 | Narama |  | - | Narama | 
| B46 | Sintini Observatory, Argenta |  | - | Sintini Observatory, Alfonsine | 
| B47 | Metsala Observatory, Espoo |  | - | Metsala Observatory, Espoo | 
| B48 | Bocholt |  | - | Bocholt | 
| B49 | Paus Observatory, Sabadell |  | - | Paus Observatory, Sabadell | 
| B50 | Corner Observatory, Durmersheim |  | - | Corner Observatory, Durmersheim | 
| B51 | Vallauris |  | - | Vallauris | 
| B52 | Observatorio El Far |  | - | Observatorio El Far | 
| B53 | Casal Lumbroso, Rome |  | La | Casal Lumbroso, Rome | 
| B54 | Àger |  | - | Ager | 
| B55 | Comeglians |  | - | Comeglians | 
| B56 | Observatorio Sant Pere, Mataró |  | - | Observatorio Sant Pere, Mataro | 
| B57 | Laietania Observatory, Parets del Vallès |  | - | Laietania Observatory, Parets del Valles | 
| B58 | Polaris Observatory, Budapest |  | - | Polaris Observatory, Budapest | 
| B59 | Borken |  | - | Borken | 
| B60 | Deep Sky Observatorium, Bad Bentheim |  | - | Deep Sky Observatorium, Bad Bentheim | 
| B61 | Valldoreix Observatory, Sant Cugat del Valles |  | CT | Valldoreix Obs., Sant Cugat del Valles | 
| B62 | Brelingen |  | NI | Brelingen | 
| B63 | Solaris Observatory, Luczanowice |  | K | Solaris Observatory, Luczanowice | 
| B64 | Slope Rock Observatory, Hyvinkää |  | - | Slope Rock Observatory, Hyvinkaa | 
| B65 | Komakallio Observatory, Kirkkonummi |  | Uusimaa | Komakallio Observatory, Kirkkonummi | 
| B66 | Osservatorio Astronomico Naturalistico di Casasco "A. Zanassi" Src |  | - | Osservatorio di Casasco | 
| B67 | Mirasteilas Observatory (Sternwarte Mirasteilas) | .svg.png.webp) | SWG | Sternwarte Mirasteilas, Falera | 
| B68 | Mount Matajur Observatory |  | - | Mount Matajur Observatory | 
| B69 | Owls and Ravens Observatory, Holzgerlingen Src |  | BW | Owls and Ravens Observatory, Holzgerlingen | 
| B70 | Sant Celoni |  | - | Sant Celoni | 
| B71 | Observatorio El Vendrell |  | - | Observatorio El Vendrell | 
| B72 | Soerth |  | - | Soerth | 
| B73 | Mauren Valley Observatory, Holzgerlingen Src |  | - | Mauren Valley Observatory, Holzgerlingen | 
| B74 | Santa Maria de Montmagastrell Observatory (Remote Observatory Santa Maria de Montmagastrell), Tàrrega Src |  | CT | Santa Maria de Montmagastrell | 
| B75 | Stazione Astronomica Betelgeuse, Magnago |  | - | Stazione Astronomica Betelgeuse, Magnago | 
| B76 | Sternwarte Schönfeld, Dresden |  | - | Sternwarte Schonfeld, Dresden | 
| B77 | Schafmatt Observatory, Aarau Src | .svg.png.webp) | SWG | Schafmatt Observatory, Aarau | 
| B78 | Astrophoton Observatory, Audorf |  | - | Astrophoton Observatory, Audorf | 
| B79 | Marana Observatory |  | - | Marana Observatory | 
| B80 | Osservatorio Astronomico Campomaggiore |  | B | Osservatorio Astronomico Campomaggiore | 
| B81 | Observatorio Astronómico Caimari Src observers: Mateu Cerda, Mateu Esteban, Pére Antoni Salom |  | - | Caimari | 
| B82 | Maidbronn Observatory |  | FB | Maidbronn | 
| B83 | Gières Observatory |  | ARA | Gieres | 
| B84 | Cyclops Observatory, Oostkapelle |  | Zeeland | Cyclops Observatory, Oostkapelle | 
| B85 | Beilen Observatory |  | Drenthe | Beilen Observatory | 
| B86 | Hagen Observatory (Volkssternwarte Hagen) Src; also note: #607 |  | NRW | Sternwarte Hagen | 
| B87 | Banyoles Observatory |  | CT | Banyoles | 
| B88 | Bigmuskie Observatory |  | P | Bigmuskie Observatory, Mombercelli | 
| B89 | Observatori Astronòmic de Tiana, Barcelona |  | CT | Observatori Astronomic de Tiana | 
| B90 | Malina River Observatory, Povoletto |  | F | Malina River Observatory, Povoletto | 
| B91 | Bollwiller |  | Haut-Rhin | Bollwiller | 
| B92 | Chinon Observatory (Observatoire de Chinon); observer: Maurice Audejean[2] |  | CVL | Chinon | 
| B93 | Hoogeveen |  | Drenthe | Hoogeveen | 
| B94 | Petrozavodsk Src |  | - | Petrozavodsk | 
| B95 | Achternholt |  | NI | Achternholt | 
| B96 | Brixiis Observatory, Kruibeke | .svg.png.webp) | - | Brixiis Observatory, Kruibeke | 
| B97 | Sterrenwacht Andromeda |  | Drenthe | Sterrenwacht Andromeda, Meppel | 
| B98 | Siena |  | Tu | Siena | 
| B99 | Santa Coloma de Gramenet |  | CT | Santa Coloma de Gramenet | 
| C00 | Velikie Luki Observatory |  | - | Velikie Luki | 
| C01 | Lohrmann Observatory (Lohrmann-Observatorium) |  | - | Lohrmann-Observatorium, Triebenberg | 
| C02 | Royal Park Observatory (Observatorio Royal Park) |  | - | Observatorio Royal Park | 
| C03 | Clayhole Observatory Src |  | - | Clayhole Observatory, Jokela | 
| C04 | Observatory Kramatorsk |  | - | Kramatorsk | 
| C05 | Königsleiten Observatory |  | - | Konigsleiten | 
| C06 | Krasnoyarsk Observatory (Siberian State Aerospace University Src) |  | - | Krasnoyarsk | 
| C07 | Anysllum Observatory Src |  | - | Anysllum Observatory, Àger | 
| C08 | Fiby Observatory |  | - | Fiby | 
| C09 | Rouet Observatory |  | - | Rouet | 
| C10 | Maisoncelles Observatory Src |  | - | Maisoncelles | 
| C11 | City Observatory |  | - | City Observatory, Slaný | 
| C12 | Berta Observatory |  | - | Berta Observatory, Sabadell | 
| C13 | Como Observatory |  | - | Como | 
| C14 | Sky Vistas Observatory |  | - | Sky Vistas Observatory, Eichgraben | 
| C15 | ISON-Ussuriysk Src |  | - | ISON-Ussuriysk Observatory | 
| C16 | Isarwinkel Observatory |  | - | Isarwinkel Observatory, Bad Tölz | 
| C17 | Joan Roget Observatory (Observatorio Joan Roget) Src |  | - | Observatorio Joan Roget, Àger | 
| C18 | Frasnes-Lez-Anvaing Observatory | .svg.png.webp) | - | Frasnes-Lez-Anvaing | 
| C19 | ROSA Observatory |  | - | ROSA Observatory, Vaucluse | 
| C20 | Kislovodsk Mtn. Astronomical Station of the Pulkovo Obs. |  | - | Kislovodsk Mtn. Astronomical Stn., Pulkovo Obs. | 
| C21 | Via Lactea Observatory (Observatorio Via Lactea) |  | - | Observatorio Via Lactea, Àger | 
| C22 | Oberwiesenthal Observatory |  | - | Oberwiesenthal | 
| C23 | Olmen Observatory | .svg.png.webp) | - | Olmen | 
| C24 | Seveso Observatory |  | Lo | Seveso | 
| C25 | Pulkovo Observatory Station at Campo Imperatore |  | - | Pulkovo Observatory Station, Campo Imperatore | 
| C26 | Levendaal Observatory |  | Zuid Holland | Levendaal Observatory, Leiden | 
| C27 | Pallerols Observatory |  | - | Pallerols | 
| C28 | Wellinghofen Observatory |  | - | Wellinghofen | 
| C29 | Les Planes de Son Observatory (Observatori Astronómic de Les Planes de Son) |  | - | Observatori Astronomic de Les Planes de Son | 
| C30 | Sheltozero Station of the Petrozavodsk University Obs. |  | - | Petrozavodsk University Obs., Sheltozero Stn. | 
| C31 | Neanderhoehe Hochdahl Observatory (Sternwarte Neanderhoehe Hochdahl e.V.) |  | - | Sternwarte Neanderhoehe Hochdahl e.V., Erkrath | 
| C32 | Ka-Dar Observatory, TAU Station Src |  | - | Ka-Dar Observatory, TAU Station, Nizhny Arkhyz | 
| C33 | CEAM Observatory (Observatorio CEAM) |  | CN | Observatorio CEAM, Caimari | 
| C34 | Baja Astronomical Observatory |  | - | Baja Astronomical Observatory | 
| C35 | Terrassa Observatory |  | - | Terrassa | 
| C36 | Starry Wanderer Observatory |  | - | Starry Wanderer Observatory, Baran' | 
| C37 | Stowupland Observatory |  | ENG | Stowupland | 
| C38 | Varuna Observatory |  | - | Varuna Observatory, Cuorgnè | 
| C39 | Nijmegen Observatory |  | Gelderland | Nijmegen | 
| C40 | Kuban State University Astrophysical Observatory |  | - | Kuban State University Astrophysical Observatory | 
| C41 | MASTER-II Observatory (at Pulkovo Observatory; #084) |  | - | MASTER-II Observatory, Kislovodsk | 
| C42 | Xingming Observatory |  | - | Xingming Observatory, Mt. Nanshan | 
| C43 | Hoyerswerda Observatory |  | - | Hoyerswerda | 
| C44 | A. Volta Observatory |  | - | A. Volta Observatory, Lanzo d'Intelvi | 
| C45 | MPC1 Cassia Observatory Src |  | - | MPC1 Cassia Observatory, La Giustiniana | 
| C46 | Horizon Observatory |  | - | Horizon Observatory, Petropavlovsk | 
| C47 | Nonndorf Observatory Src |  | - | Nonndorf | 
| C48 | Sayan Solar Observatory |  | - | Sayan Solar Observatory, Irkutsk | 
| C49 | STEREO-A (space observatory) | SPACE | Earth-trailing | STEREO-A | 
| C50 | STEREO-B (space observatory) | SPACE | Earth-trailing | STEREO-B | 
| C51 | WISE (space observatory) | SPACE | Sun-synchronous | WISE | 
| C52 | Swift (space observatory) | SPACE | LEO | Swift | 
| C53 | NEOSSat (space observatory) | SPACE | Sun-synchronous | NEOSSat | 
| C54 | New Horizons (space observatory) | SPACE | deep space | New Horizons | 
| C55 | Kepler (space observatory) | SPACE | - | Kepler | 
| C56 | LISA Pathfinder (space observatory) | SPACE | - | LISA-Pathfinder | 
| C57 | TESS (space observatory) | SPACE | High Earth | TESS | 
| C59 | Yang Wang-1 (Src) | SPACE | LEO? | Yangwang-1 | 
| C60 | Argelander Institute for Astronomy Observatory |  | - | Argelander Institute for Astronomy Obs., Bonn | 
| C61 | Chelles Observatory |  | - | Chelles | 
| C62 | Eurac Observatory, observer: Titouan [2] |  | - | Eurac Observatory, Bolzano | 
| C63 | Giuseppe Piazzi Observatory |  | - | Giuseppe Piazzi Observatory, Ponte in Valtellina | 
| C64 | Puchenstuben Observatory |  | - | Puchenstuben | 
| C65 | Montsec Observatory (Observatori Astronòmic del Montsec) |  | - | Observatori Astronomic del Montsec | 
| C66 | El Cielo de Consell Observatory (Observatorio El Cielo de Consell) |  | IB | Observatorio El Cielo de Consell | 
| C67 | Gnevsdorf Observatory |  | - | Gnevsdorf | 
| C68 | Ellinogermaniki Agogi Observatory Src |  | - | Ellinogermaniki Agogi Observatory, Pallini | 
| C69 | Bayerwald Observatory (Bayerwald Sternwarte) |  | - | Bayerwald Sternwarte, Neuhütte | 
| C70 | Uiterstegracht Station |  | Zuid Holland | Uiterstegracht Station, Leiden | 
| C71 | Sant Marti Sesgueioles Observatory |  | - | Sant Marti Sesgueioles | 
| C72 | Palestrina Observatory |  | - | Palestrina | 
| C73 | Galați Observatory Src |  | - | Galati Observatory | 
| C74 | El Teatrillo de Lyra Observatory (Observatorio El Teatrillo de Lyra) |  | - | Observatorio El Teatrillo de Lyra, Àger | 
| C75 | Whitestar Observatory |  | - | Whitestar Observatory, Borgobello | 
| C76 | Estels Observatory (Observatorio Estels) |  | - | Observatorio Estels, Àger | 
| C77 | Bernezzo Observatory |  | - | Bernezzo Observatory | 
| C78 | Martin S. Kraar Observatory |  | - | Martin S. Kraar Observatory, Rehovot | 
| C79 | Roser Observatory |  | - | Roser Observatory, Blanes | 
| C80 | Don Astronomical Observatory |  | - | Don Astronomical Observatory, Rostov-on-Don | 
| C81 | Dolomites Astronomical Observatory |  | - | Dolomites Astronomical Observatory | 
| C82 | Nastro Verde Observatory (Osservatorio Astronomico Nastro Verde) |  | - | Osservatorio Astronomico Nastro Verde, Sorrento | 
| C83 | Badalozhnyj Observatory |  | - | Badalozhnyj Observatory | 
| C84 | Badalona Observatory |  | - | Badalona | 
| C85 | Cala d'Hort Observatory (Observatorio Cala d'Hort) |  | - | Observatorio Cala d'Hort, Ibiza | 
| C86 | Blanes Observatory |  | - | Blanes | 
| C87 | Rimbach Observatory |  | - | Rimbach | 
| C88 | Montarrenti Observatory |  | - | Montarrenti Observatory, Siena | 
| C89 | Astronomical Station Vidojevica |  | - | Astronomical Station Vidojevica | 
| C90 | Vinyols Observatory |  | - | Vinyols | 
| C91 | Montevenere Observatory |  | - | Montevenere Observatory, Monzuno | 
| C92 | Valdicerro Observatory |  | - | Valdicerro Observatory, Loreto | 
| C93 | Bellavista Observatory |  | - | Bellavista Observatory, L'Aquila | 
| C94 | MASTER-II Observatory |  | - | MASTER-II Observatory, Tunka | 
| C95 | SATINO Remote Observatory |  | PACA | SATINO Remote Observatory, Haute Provence | 
| C96 | OACL Observatory |  | - | OACL Observatory, Mosciano Sant Angelo | 
| C97 | Al-Fulaij Observatory |  | - | Al-Fulaij Observatory, Oman | 
| C98 | Casellina Observatory (Osservatorio Casellina) |  | - | Osservatorio Casellina, Scandicci | 
| C99 | Can Roig Observatory (Observatori Can Roig) |  | - | Observatori Can Roig, Llagostera | 
| D00 | ASC-Kislovodsk Observator (formerly ISON-Kislovodsk Observatory)Src |  | - | ASC-Kislovodsk | 
| D01 | Andean Northern Observatory |  | - | Andean Northern Observatory, Nummi-Pusula | 
| D02 | Petit Sant Feliu Observatory (Observatori Petit Sant Feliu), Sant Feliu de Llobregat |  | CT | Observatori Petit Sant Feliu | 
| D03 | Rantiga Observatory (Rantiga Osservatorio) Carpineti |  | - | Rantiga Osservatorio, Tincana | 
| D04 | Krasnodar Observatory |  | - | Krasnodar | 
| D05 | ISON-Terskol Observatory |  | - | ISON-Terskol Observatory | 
| D06 | Tuscolana Association of Astronomy (Associazione Tuscolana di Astronomia) |  | - | Associazione Tuscolana di Astronomia, Domatore | 
| D07 | Wegberg Observatory |  | NRW | Wegberg | 
| D08 | Ghezz Observatory Src | .svg.png.webp) | SWI | Ghezz Observatory, Leontica | 
| D09 | Observatory Grömme Src | .svg.png.webp) | - | Observatory Gromme, Maasmechelen | 
| D10 | Gaertringen Observatory, Gärtringen |  | BW | Gaertringen | 
| D11 | Bastidan Observatory |  | Marseille | Bastidan Observatory | 
| D12 | Filzi School Observatory |  | S.Tirol | Filzi School Observatory, Laives | 
| D13 | Cat's Eye Observatory |  | Toscana | Cat's Eye Observatory | 
| D14 | Nanchuan Observatory |  | - | Nanchuan Observatory, Guangzhou | 
| D15 | F. Schiller-Gymnasium Observatory (Sternwarte Friedrich-Schiller-Gymnasium) |  | TH | Sternwarte F.Schiller-Gymnasium, Weimar | 
| D16 | Po Leung Kuk Observatory |  | HK | Po Leung Kuk Observatory, Tuen Mun | 
| D17 | Hong Kong Observatory |  | HK | Hong Kong | 
| D18 | Mount Guizi Observatory |  | - | Mt. Guizi Observatory | 
| D19 | Hong Kong Space Museum |  | HK | Hong Kong Space Museum, Tsimshatsui | 
| D20 | Zadko Observatory | .svg.png.webp) | WA | Zadko Observatory, Wallingup Plain | 
| D21 | Shenton Park Observatory | .svg.png.webp) | WA | Shenton Park | 
| D22 | UWA Observatory | .svg.png.webp) | WA | UWA Observatory, Crawley | 
| D24 | LightBuckets Observatory | .svg.png.webp) | WA | LightBuckets Observatory, Pingelly | 
| D25 | Tzec Maun Observatory Src Archived 2021-01-26 at the Wayback Machine | .svg.png.webp) | WA | Tzec Maun Observatory, Pingelly (before 2010) | 
| D29 | PMO NEO Survey Program at the XuYi Station of the Purple Mountain Observatory |  | - | Purple Mountain Observatory, XuYi Station | 
| D32 | JiangNanTianChi Observatory |  | - | JiangNanTianChi Observatory, Mt. Getianling | 
| D33 | Kenting Observatory at Checheng Src Archived 2018-08-23 at the Wayback Machine |  | - | Kenting Observatory, Checheng | 
| D34 | Kenting Observatory at Hengchun |  | - | Kenting Observatory, Hengchun | 
| D35 | Lulin Observatory |  | - | Lulin Observatory | 
| D36 | Tataka Observatory |  | - | Tataka, Mt. Yu-Shan National Park | 
| D37 | Lulin Widefield Telescope, see #D35 |  | - | Lulin Widefield Telescope, Mt. Lulin | 
| D39 | Shandong University Observatory |  | Weihai | Shandong University Observatory, Weihai | 
| D44 | Ishigakijima Astronomical Observatory Src |  | 47 | Ishigakijima Astronomical Observatory | 
| D53 | ISON-Blagovechensk Observatory |  | - | ISON-Blagoveschensk Observatory | 
| D54 | MASTER-II Observatory |  | - | MASTER-II Observatory, Blagoveshchensk | 
| D55 | Kangwon Science High School Observatory |  | - | Kangwon Science High School Observatory, Ksho | 
| D57 | Gimhae Astronomical Observatory |  | - | Gimhae Astronomical Observatory, Uhbang-dong | 
| D58 | KSA SEM Observatory |  | - | KSA SEM Observatory, Danggam-dong | 
| D61 | Suntopia Marina Observatory |  | - | Suntopia Marina, Sumoto | 
| D62 | Miyaki-Argenteus Observatory |  | - | Miyaki-Argenteus | 
| D70 | Tosa Observatory |  | - | Tosa | 
| D74 | Nakagawa Observatory (Anan Science Center Nakagawa Observatory; Nakagawa Science Center Nakagawa Observatory) |  | - | Nakagawa | 
| D78 | Iga-Ueno Observatory |  | - | Iga-Ueno | 
| D79 | YSVP Observatory | .svg.png.webp) | SA | YSVP Observatory, Vale Park | 
| D80 | Gumma Astronomical Observatory (CHECK with: Gunma Astronomical Observatory, HP) |  | 10 | Gumma Astronomical Observatory | 
| D81 | Nagano Observatory |  | 20 | Nagano | 
| D82 | Wallaroo Observatory | .svg.png.webp) | SA | Wallaroo | 
| D83 | Miwa Observatory |  | - | Miwa | 
| D84 | Hallet Cove Observatory | .svg.png.webp) | SA | Hallet Cove | 
| D85 | Ingle Farm Observatory | .svg.png.webp) | SA | Ingle Farm | 
| D86 | Penwortham Observatory | .svg.png.webp) | SA | Penwortham | 
| D87 | Brooklyn Park Observatory | .svg.png.webp) | SA | Brooklyn Park | 
| D88 | Hiratsuka Observatory |  | - | Hiratsuka | 
| D89 | Yamagata Astronomical Observatory (Yamagata Tenmondai) |  | 06 | Yamagata | 
| D90 | RAS Observatory | .svg.png.webp) | SA | RAS Observatory, Moorook | 
| D91 | Hamanowa Astronomical Observatory (HAO), observers: Hiromi Hamanowa, Hiroko Hamanowa Src |  | 13 | Adati | 
| D92 | Osaki Observatory |  | - | Osaki | 
| D93 | Sendai Astronomical Observatory |  | - | Sendai Astronomical Observatory | 
| D94 | Takanezawa Observatory |  | 09 | Takanezawa, Tochigi | 
| D95 | Kurihara Observatory |  | - | Kurihara | 
| D96 | Tzec Maun Observatory Src Archived 2021-01-26 at the Wayback Machine | .svg.png.webp) | SA | Tzec Maun Observatory, Moorook | 
| D97 | Berri Observatory | .svg.png.webp) | SA | Berri | 
| E00 | Castlemaine Observatory | .svg.png.webp) | Vic | Castlemaine | 
| E01 | South Yarra (Barfold) | .svg.png.webp) | Vic | Barfold | 
| E03 | RAS Observatory | .svg.png.webp) | Vic | RAS Observatory, Officer | 
| E04 | Pacific Sky Observatory, Northern Mariana Islands |  | MP | Pacific Sky Observatory, Saipan | 
| E05 | Earl Hill Observatory | .svg.png.webp) | Qld | Earl Hill Observatory, Trinity Beach | 
| E07 | Murrumbateman Observatory | .svg.png.webp) | NSW | Murrumbateman | 
| E08 | Wobblesock Observatory | .svg.png.webp) | NSW | Wobblesock Observatory, Coonabarabran | 
| E09 | Oakley Southern Sky Observatory | .svg.png.webp) | NSW | Oakley Southern Sky Observatory, Coonabarabran | 
| E10 | Faulkes Telescope South at Siding Spring | .svg.png.webp) | NSW | Siding Spring-Faulkes Telescope South | 
| E11 | Frog Rock Observatory | .svg.png.webp) | NSW | Frog Rock Observatory, Mudgee | 
| E12 | Siding Spring Survey | .svg.png.webp) | NSW | Siding Spring Survey | 
| E13 | Wanniassa Observatory | .svg.png.webp) | ACT | Wanniassa | 
| E14 | Hunters Hill Observatory; observer: David Higgins | .svg.png.webp) | ACT | Hunters Hill Observatory, Ngunnawal | 
| E15 | Magellan Observatory | .svg.png.webp) | NSW | Magellan Observatory, near Goulburn | 
| E16 | Grove Creek Observatory | .svg.png.webp) | NSW | Grove Creek Observatory, Trunkey | 
| E17 | Leura Observatory (renamed to "Blue Mountains Observatory", see: #Q68); observer: Julian Oey | .svg.png.webp) | NSW | Leura | 
| E18 | BDI Observatory, Bangor | .svg.png.webp) | NSW | BDI Observatory, Regents Park | 
| E19 | Kingsgrove Observatory | .svg.png.webp) | NSW | Kingsgrove | 
| E20 | Marsfield Observatory | .svg.png.webp) | NSW | Marsfield | 
| E21 | Norma Rose Observatory | .svg.png.webp) | Qld | Norma Rose Observatory, Leyburn | 
| E22 | University of Southern Queensland Observatory | .svg.png.webp) | Qld | Univ. of Southern Queensland Obs., Mt. Kent | 
| E23 | Arcadia Observatory | .svg.png.webp) | NSW | Arcadia | 
| E24 | Tangra Observatory | .svg.png.webp) | NSW | Tangra Observatory, St. Clair | 
| E25 | Rochedale (APTA) | .svg.png.webp) | Qld | Rochedale (APTA) | 
| E26 | RAS Observatory | .svg.png.webp) | Qld | RAS Observatory, Biggera Waters | 
| E27 | Thornlands Observatory | .svg.png.webp) | Qld | Thornlands | 
| E28 | Kuriwa Observatory | .svg.png.webp) | NSW | Kuriwa Observatory, Hawkesbury Heights | 
| E81 | Nelson Observatory |  | S | Nelson | 
| E83 | Wither Observatory |  | N | Wither Observatory, Witherlea | 
| E85 | Farm Cove Observatory, Auckland |  | Au | Farm Cove | 
| E87 | Turitea Observatory |  | N | Turitea | 
| E89 | Geyserland Observatory, Rotorua Src |  | N | Geyserland Observatory, Pukehangi | 
| E94 | Possum Observatory Src |  | N | Possum Observatory, Gisborne | 
| F51 | Pan-STARRS 1 (PS1) at Haleakala Observatory |  | HI | Pan-STARRS 1, Haleakala | 
| F52 | Pan-STARRS 2 (PS2) at Haleakala Observatory |  | HI | Pan-STARRS 2, Haleakala | 
| F59 | Ironwood Remote Observatory |  | HI | Ironwood Remote Observatory, Hawaii | 
| F60 | Ironwood North Observatory |  | HI | Ironwood Observatory, Hawaii | 
| F65 | Haleakala-Faulkes Telescope North |  | HI | Haleakala-Faulkes Telescope North | 
| F84 | Hibiscus Observatory, Puna'auia |  | - | Hibiscus Observatory, Punaauia | 
| F85 | Tiki Observatory, Puna'auia |  | - | Tiki Observatory, Punaauia | 
| F86 | Moana Observatory, Puna'auia |  | - | Moana Observatory, Punaauia | 
| G00 | AZM Martinsberg Observatory |  | - | AZM Martinsberg, Oed | 
| G01 | Oldenburg University Observatory (Universitätssternwarte Oldenburg) |  | NI | Universitaetssternwarte Oldenburg | 
| G03 | Capricornus Observatory, Csókakő |  | - | Capricornus Observatory, Csokako | 
| G04 | Schuelerlabor Astronomie St. 7 |  | NRW | Schuelerlabor Astronomie St. 7, Wuppertal | 
| G05 | Piconcillo Observatory |  | AN | Piconcillo, Sierra Morena | 
| G06 | Dordrecht, Sterrenburg |  | Zuid Holland | Dordrecht, Sterrenburg | 
| G07 | Millau Observatory Observatory |  | - | Millau Observatory | 
| G08 | Les Pedritxes Observatory |  | Cat | Observatorio Les Pedritxes, Matadepera | 
| G09 | SWF Observatory |  | England | SWF Observatory, South Woodham Ferrers | 
| G10 | Clavier Observatory |  | - | Clavier Observatory, Lora Del Rio | 
| G11 | Breitenweg Observatory, Bergisch Gladbach |  | NRW | Breitenweg Observatory, Herkenrath | 
| G12 | EG Observatory (Sternwarte EG) |  | NRW | Sternwarte EG, Lippstadt | 
| G13 | Astronomihagen Observatory |  | - | Astronomihagen, Fannrem | 
| G14 | Novaloop Observatory |  | PACA | Novaloop Observatory, Mougins | 
| G15 | Magroforte Observatory |  | - | Magroforte Observatory, Alessandria | 
| G16 | OmegaLab Observatory |  | Si | OmegaLab Observatory, Palermo | 
| G17 | BAS Observatory |  | Tu | BAS Observatory, Scandicci | 
| G18 | ALMO Observatory |  | ER | ALMO Observatory, Padulle | 
| G19 | Immanuel Kant Observatory |  | - | Immanuel Kant Observatory, Limbach | 
| G20 | Brignoles Observatory |  | - | Brignoles Observatory | 
| G21 | Castrofilippo Observatory (Osservatorio Castrofilippo) |  | - | Osservatorio Castrofilippo | 
| G22 | Experimenta Observatory |  | - | Experimenta Observatory, Heilbronn | 
| G23 | Vulpecula Observatory |  | - | Vulpecula Observatory, Budapest | 
| G24 | Dettenhausen Observatory |  | BW | Dettenhausen | 
| G25 | Sherbrooke Observatory | .svg.png.webp) | QC | Sherbrooke | 
| G26 | Fushan Observatory |  | Shaanxi | Fushan Observatory, Mt Shaohua | 
| G27 | Telescope Fabra ROA Montsec (TFRM), Sant Esteve de la Sarga, Lleida |  | CT | Fabra Observatory, Montsec | 
| G28 | Wyncroft Observatory |  | ENG | Wyncroft Observatory, Attleborough | 
| G29 | Requena Observatory |  | - | Requena | 
| G30 | Casselman Observatory | .svg.png.webp) | ON | Casselman | 
| G31 | CCAT Trieste Observatory |  | - | CCAT Trieste | 
| G32 | Elena Remote Observatory |  | Af | Elena Remote Observatory, San Pedro de Atacama | 
| G33 | Wickede Observatory |  | NRW | Wickede | 
| G34 | Oberfrauendorf Observatory |  | - | Oberfrauendorf | 
| G35 | Elephant Head Observatory |  | AZ | Elephant Head Observatory, Sahuarita | 
| G36 | Calar Alto-CASADO |  | - | Calar Alto-CASADO | 
| G37 | Lowell Discovery Telescope |  | AZ | Lowell Observatory-Lowell Discovery Telescope | 
| G38 | La Senda Observatory (Observatorio La Senda) |  | CLM | Observatorio La Senda, Cabanillas del Campo | 
| G39 | ROAD Observatory |  | Af | ROAD, San Pedro de Atacama | 
| G40 | Slooh Observatory |  | CN | Slooh.com Canary Islands Observatory | 
| G41 | Insperity Observatory |  | TX | Insperity Observatory, Humble | 
| G42 | UAdeC Observatory (Observatorio Astronómico UAdeC; Autonomous University of Coahuila) |  | - | Observatorio Astronomico UAdeC, Saltillo | 
| G43 | Buenaventura Suarez Observatory (Observatorio Buenaventura Suarez) |  | D | Observatorio Buenaventura Suarez, San Luis | 
| G44 | Longa Vista Observatory (Observatorio Longa Vista), Itatiba |  | SP | Observatorio Longa Vista, São Paulo | 
| G45 | Space Surveillance Telescope (SST) (moved in 2017, from Atom Site, NM, USA, to Australia) | .svg.png.webp) | WA | Exmouth, Western Australia | 
| G46 | Northwest Florida State College Observatory |  | FL | Pinto Valley Observatory | 
| G47 | HillTopTop Observatory |  | NM | HillTopTop Observatory, Edgewood | 
| G48 | Doc Greiner Research Observatory |  | NM | Harlingten Research Observatory, Rancho Hildalgo | 
| G49 | Minnetonka Observatory |  | MN | Minnetonka | 
| G50 | Organ Mesa Observatory, observer: Frederick Pilcher[2] |  | NM | Organ Mesa Observatory, Las Cruces | 
| G51 | Byrne Observatory |  | CA | Byrne Observatory, Sedgwick Reserve | 
| G52 | Stone Edge Observatory |  | CA | Stone Edge Observatory, El Verano | 
| G53 | Alder Springs Observatory |  | CA | Alder Springs Observatory, Auberry | 
| G54 | Hemet Observatory |  | CA | Hemet | 
| G55 | Bakersfield Observatory |  | CA | Bakersfield | 
| G56 | Walnut Creek Observatory |  | CA | Walnut Creek | 
| G57 | Dilbert Observatory |  | OR | Dilbert Observatory, Forest Grove | 
| G58 | Chabot Space and Science Center |  | CA | Chabot Space and Science Center, Oakland | 
| G59 | Maiden Lane Observatory |  | WA | Maiden Lane Obs., Bainbridge Island | 
| G60 | Carroll Observatory |  | CA | Carroll Observatory, Montecito | 
| G61 | Pleasanton Observatory |  | CA | Pleasanton | 
| G62 | Sunriver Nature Center Observatory |  | OR | Sunriver Nature Center Observatory, Sunriver | 
| G63 | Mill Creek Observatory |  | OR | Mill Creek Observatory, The Dalles | 
| G64 | Blue Canyon Observatory |  | CA | Blue Canyon Observatory | 
| G65 | Vulcan North Observatory at Lick Observatory |  | CA | Vulcan North, Lick Observatory, Mount Hamilton | 
| G66 | Lake Forest Observatory |  | CA | Lake Forest Observatory, Forest Hills | 
| G67 | Rancho del Sol Observatory |  | CA | Rancho Del Sol, Camino | 
| G68 | Sierra Stars Observatory |  | CA | Sierra Stars Observatory, Markleeville | 
| G69 | Via Capote Observatory; observer: James W. Brinsfield[2] |  | CA | Via Capote Sky Observatory, Thousand Oaks | 
| G70 | Francisquito Observatory |  | CA | Francisquito Observatory, Los Angeles | 
| G71 | Rancho Palos Verdes Observatory |  | CA | Rancho Palos Verdes | 
| G72 | University Hills Observatory |  | CA | University Hills | 
| G73 | Mount Wilson-TIE |  | CA | Mount Wilson-TIE | 
| G74 | Boulder Knolls Observatory |  | CA | Boulder Knolls Observatory, Escondido | 
| G75 | Starry Knight Observatory |  | CA | Starry Knight Observatory, Coto de Caza | 
| G76 | Altimira Observatory |  | CA | Altimira Observatory, Coto de Caza | 
| G77 | Baldwin Lake Observatory |  | CA | Baldwin Lake | 
| G78 | Desert Wanderer Observatory |  | CA | Desert Wanderer Observatory, El Centro | 
| G79 | Goat Mountain Astronomical Research Station (GMARS); observer: Robert Stephens (also see #646 and #U81) |  | CA | Goat Mountain Astronomical Research Station | 
| G80 | Sierra Remote Observatories |  | CA | Sierra Remote Observatories, Auberry | 
| G81 | Temecula Observatory |  | CA | Temecula | 
| G82 | SARA Observatory (Southeastern Association for Research in Astronomy) |  | AZ | SARA Observatory, Kitt Peak | 
| G83 | Large Binocular Telescope |  | AZ | Mt. Graham-LBT | 
| G84 | Mount Lemmon Sky Center |  | AZ | Mount Lemmon SkyCenter | 
| G85 | Vermillion Cliffs Observatory |  | UT | Vermillion Cliffs Observatory, Kanab | 
| G86 | Tucson-Winterhaven Observatory |  | AZ | Tucson-Winterhaven | 
| G87 | Calvin M. Hooper Memorial Observatory |  | UT | Calvin M. Hooper Memorial Observatory, Hyde Park | 
| G88 | LAMP Observatory |  | AZ | LAMP Observatory, New River | 
| G89 | Kachina Observatory |  | AZ | Kachina Observatory, Flagstaff | 
| G90 | Three Buttes Observatory |  | AZ | Three Buttes Observatory, Tucson | 
| G91 | 2MASS (Two Micron All-Sky Survey) at Whipple Obs. (see #696) |  | AZ | Whipple Observatory, Mt. Hopkins—2MASS | 
| G92 | Jarnac Observatory |  | AZ | Jarnac Observatory, Vail | 
| G93 | Sonoita Research Observatory |  | AZ | Sonoita Research Observatory, Sonoita | 
| G94 | Sonoran Skies Observatory |  | AZ | Sonoran Skies Observatory, St. David | 
| G95 | Hereford Arizona Observatory |  | AZ | Hereford Arizona Observatory, Hereford | 
| G96 | Mount Lemmon Survey |  | AZ | Mt. Lemmon Survey | 
| G97 | Astronomical League Alpha Observatory |  | AZ | Astronomical League Alpha Observatory, Portal | 
| G98 | Calvin-Rehoboth Robotic Observatory |  | NM | Calvin-Rehoboth Observatory, Rehoboth | 
| G99 | NF Observatory |  | NM | NF Observatory, Silver City | 
| H00 | Tyrone Observatory |  | NM | Tyrone | 
| H01 | Magdalena Ridge Observatory, New Mexico Tech |  | NM | Magdalena Ridge Observatory, Socorro | 
| H02 | Sulphur Flats Observatory |  | NM | Sulphur Flats Observatory, La Cueva | 
| H03 | Sandia View Observatory |  | NM | Sandia View Observatory, Rio Rancho | 
| H04 | Santa Fe Observatory |  | NM | S | 
| H05 | Edmund Kline Observatory |  | CO | Edmund Kline Observatory, Deer Trail | 
| H06 | Remote Astronomical Society Observatory of New Mexico, a.k.a. RAS Observatory of New Mexico; New Mexico Skies Observatory; iTelescope Observatory |  | NM | iTelescope Observatory, Mayhill | 
| H07 | 7300 Observatory |  | NM | 7300 Observatory, Cloudcroft | 
| H08 | BlackBird Observatory; observer: Ken Levin |  | NM | BlackBird Observatory, Cloudcroft | 
| H09 | Antelope Hills Observatory; observer: Robert A. Koff (also see #713)[2] Src |  | CO | Antelope Hills Observatory, Bennett | 
| H10 | Tzec Maun Observatory (Tzec Maun Foundation Observatory at Mayhill; also see Cloudcroft location: #V29) |  | NM | Tzec Maun Observatory, Mayhill | 
| H11 | LightBuckets Observatory, Rodeo (LightBuckets re-located to #B10 in 2011) Src |  | NM | LightBuckets Observatory, Rodeo | 
| H12 | TechDome, Mayhill Src |  | NM | TechDome, Mayhill | 
| H13 | Lenomiya Observatory Src |  | AZ | Lenomiya Observatory, Casa Grande | 
| H14 | Morning Star Observatory, Tucson Src |  | AZ | Morning Star Observatory, Tucson | 
| H15 | ISON-NM, Mayhill Src |  | NM | ISON-NM Observatory, Mayhill | 
| H16 | HUT Observatory, Eagle |  | CO | HUT Observatory, Eagle | 
| H17 | Angel Peaks Observatory |  | CO | Angel Peaks Observatory | 
| H18 | Vail |  | AZ | Vail View Observatory, Vail | 
| H19 | Lone Star Observatory Src |  | OK | Lone Star Observatory, Caney | 
| H20 | Eastern Illinois University Obs. |  | IL | Eastern Illinois University Obs., Charleston | 
| H21 | Astronomical Research Observatory or Astronomical Research Institute |  | IL | Astronomical Research Observatory, Westfield | 
| H22 | Terre Haute |  | IN | Terre Haute | 
| H23 | Pear Tree Observatory |  | FL | Pear Tree Observatory, Valparaiso | 
| H24 | J. C. Veen Observatory |  | MI | J. C. Veen Observatory, Lowell | 
| H25 | Harvest Moon Observatory |  | MN | Harvest Moon Observatory, Northfield | 
| H26 | Doc Greiner Research Observatory, also see #G48 |  | WI | Doc Greiner Research Observatory, Janesvillle | 
| H27 | Moonglow Observatory |  | MO | Moonglow Observatory, Warrensburg | 
| H28 | Preston Hills Observatory (different from Preston Gott Observatory, Texas Tech University, north of Lubbock; observer: Maurice Clark SrcSrc) |  | TX | Preston Hills Observatory, Celina | 
| H29 | Ivywood Observatory |  | OK | Ivywood Observatory, Edmond | 
| H30 | University of Oklahoma Observatory |  | OK | University of Oklahoma Observatory, Norman | 
| H31 | Star Ridge Observatory |  | TX | Star Ridge Observatory, Weimar | 
| H32 | Texas A&M Physics Observatory, College Station |  | TX | Texas A&M Physics Observatory, College Station | 
| H33 | Bixhoma Observatory, Bixby |  | OK | Bixhoma Observatory, Bixby | 
| H34 | Chapel Hill Observatory |  | TX | Chapel Hill | 
| H35 | Leavenworth Observatory |  | KS | Leavenworth | 
| H36 | Sandlot Observatory |  | KS | Sandlot Observatory, Scranton | 
| H37 | Grems Timmons Observatories |  | IA | Grems Timmons Observatories, Graettinger | 
| H38 | Timberline Observatory |  | IA | Timberline Observatory, Urbandale | 
| H39 | S.O.S. Observatory (Shed of Science Observatory; SOS); observer: Richard Durkee Src |  | MN | S.O.S. Observatory, Minneapolis | 
| H40 | Nubbin Ridge Observatory |  | AR | Nubbin Ridge Observatory | 
| H41 | Petit Jean Mountain |  | AR | Petit Jean Mountain | 
| H42 | Wartburg College Observatory |  | IA | Wartburg College Observatory, Waverly | 
| H43 | Conway Observatory |  | AR | Conway | 
| H44 | Cascade Mountain Observatory |  | AR | Cascade Mountain | 
| H45 | Arkansas Sky Observatory |  | AR | Arkansas Sky Obs., Petit Jean Mountain South | 
| H46 | Ricky Observatory |  | MO | Ricky Observatory, Blue Springs | 
| H47 | Vicksburg Observatory |  | MS | Vicksburg | 
| H48 | PSU Greenbush Observatory |  | KS | PSU Greenbush Observatory, Pittsburg | 
| H49 | ATU Astronomical Observatory |  | AR | ATU Astronomical Observatory, Russellville | 
| H50 | University of Central Arkansas Observatory |  | AR | University of Central Arkansas Obs., Conway | 
| H51 | Greiner Research Observatory |  | WI | Greiner Research Observatory, Verona | 
| H52 | Hawkeye Observatory Src |  | IL | Hawkeye Observatory, Durand | 
| H53 | Thompsonville Observatory |  | IL | Thompsonville | 
| H54 | Cedar Drive Observatory |  | WI | Cedar Drive Observatory, Pulaski | 
| H55 | Astronomical Research Observatory, formerly known as Antares Observatory (also see observatory #X39 in Argentina) |  | IL | Astronomical Research Observatory, Charleston | 
| H56 | Northbrook Meadow Observatory |  | IL | Northbrook Meadow Observatory | 
| H57 | Ohio State University Observatory |  | OH | Ohio State University Observatory, Lima | 
| H58 | NASA/MSFC ALaMO |  | AL | NASA/MSFC ALaMO, Redstone Arsenal | 
| H59 | Prairie Grass Observatory |  | IN | Prairie Grass Observatory, Camp Cullom | 
| H60 | Heartland Observatory |  | IN | Heartland Observatory, Carmel | 
| H61 | Newcastle Observatory | .svg.png.webp) | - | Newcastle | 
| H62 | Calvin College Observatory |  | MI | Calvin College Observatory | 
| H63 | DeKalb Observatory, observer: Don Starkey[2] |  | IN | DeKalb Observatory, Auburn | 
| H64 | Thomas More College Observatory |  | KY | Thomas More College Observatory, Crestview Hills | 
| H65 | Waltonfields Observatory |  | KY | Waltonfields Observatory, Walton | 
| H66 | Yellow Springs Observatory |  | OH | Yellow Springs | 
| H67 | Stonegate Observatory |  | MI | Stonegate Observatory, Ann Arbor | 
| H68 | Red Barn Observatory |  | GA | Red Barn Observatory, Ty Ty | 
| H69 | Ohio Wesleyan University |  | OH | Perkins Observatory, Delaware | 
| H70 | Asheville Observatory |  | NC | Asheville | 
| H71 | Chula Observatory |  | GA | Chula | 
| H72 | Evelyn L. Egan Observatory |  | FL | Evelyn L. Egan Observatory, Fort Myers | 
| H73 | Lakeland Astronomical Observatory |  | FL | Lakeland Astronomical Observatory, Kirtland | 
| H74 | Bar J Observatory |  | FL | Bar J Observatory, New Smyrna Beach | 
| H75 | Indian Hill North Observatory |  | OH | Indian Hill North Observatory, Huntsburg | 
| H76 | Oakridge Observatory |  | FL | Oakridge Observatory, Miami | 
| H77 | Buehler Observatory |  | FL | Buehler Observatory | 
| H78 | University of Nariño Observatory |  | - | University of Narino Observatory, Pasto | 
| H79 | York University Observatory | .svg.png.webp) | ON | York University Observatory, Toronto | 
| H80 | Halstead Observatory Src |  | NJ | Halstead Observatory, Princeton | 
| H81 | Hartung-Boothroyd Observatory |  | NY | Hartung-Boothroyd Observatory, Ithaca | 
| H82 | CBA-NOVAC Observatory |  | VA | CBA-NOVAC Observatory, Front Royal | 
| H83 | Timberlake Observatory |  | VA | Timberlake Observatory, Oakton | 
| H84 | Northview Observatory |  | NY | Northview Observatory, Mendon | 
| H85 | Silver Spring Observatory Src |  | MD | Silver Spring | 
| H86 | CBA-East Observatory |  | MD | CBA-East Observatory, Laurel | 
| H87 | Fenwick Observatory |  | VA | Fenwick Observatory, Richmond | 
| H88 | Hope Observatory |  | MD | Hope Observatory, Belcamp | 
| H89 | Galaxy Blues Observatory | .svg.png.webp) | QC | Galaxy Blues Observatory, Gatineau | 
| H90 | Ottawa Observatory | .svg.png.webp) | ON | Ottawa | 
| H91 | Reynolds Observatory |  | NY | Reynolds Observatory, Potsdam | 
| H92 | Arcturus Observatory |  | NJ | Arcturus Observatory | 
| H93 | Berkeley Heights Observatory |  | NJ | Berkeley Heights | 
| H94 | Cedar Knolls Observatory |  | NJ | Cedar Knolls | 
| H95 | NJIT Observatory |  | NJ | NJIT Observatory, Newark | 
| H96 | Observatoire des Pléïades | .svg.png.webp) | QC | Observatoire des Pleiades, Mandeville | 
| H97 | Talcott Mountain Science Center |  | CT | Talcott Mountain Science Center, Avon | 
| H98 | Dark Roseanne Observatory |  | CT | Dark Rosanne Obs., Middlefield | 
| H99 | Sunhill Observatory |  | MA | Sunhill Observatory, Newton | 
| I00 | Carbuncle Hill Observatory; observer: Donald Pray (also see #912) |  | RI | Carbuncle Hill Observatory, Coventry | 
| I01 | Clay Center Observatory |  | MA | Clay Center Observatory, Brookline | 
| I02 | Two Micron All-Sky Survey (2MASS), at #807 |  | Co | Cerro Tololo Observatory, La Serena—2MASS | 
| I03 | Astrovirtel (Accessing Astronomical Archives as Virtual Telescopes) |  | - | European Southern Obs., La Silla—ASTROVIRTEL | 
| I04 | Mamalluca Observatory, Vicuña |  | Co | Mamalluca Observatory | 
| I05 | Las Campanas Observatory-TIE |  | - | Las Campanas Observatory-TIE | 
| I06 | Werner Schmidt Observatory, Dennis-Yarmouth Regional HS, South Yarmouth |  | MA | Werner Schmidt Obs., Dennis-Yarmouth Regional HS | 
| I07 | Conlin Hill Observatory |  | MA | Conlin Hill Observatory, Oxford | 
| I08 | Alianza S4 Observatory, El Leoncito |  | J | Alianza S4, Cerro Burek | 
| I09 | Cerro Armazones Observatory |  | - | Cerro Armazones | 
| I10 | CAO – Campo Catino Austral Observatory Survey (CAOS) Src Archived 2018-02-03 at the Wayback Machine |  | Af | CAO, San Pedro de Atacama (until 2012) | 
| I11 | Gemini South (Gemini South Observatory) |  | - | Gemini South Observatory, Cerro Pachón | 
| I12 | Phillips Academy Observatory |  | MA | Phillips Academy Observatory, Andover | 
| I13 | Burleith Observatory |  | D.C. | Burleith Observatory, Washington D.C. | 
| I14 | Tigh Speuran Observatory |  | MA | Tigh Speuran Observatory, Framingham | 
| I15 | Wishing Star Observatory |  | MA | Wishing Star Observatory, Barrington | 
| I16 | IAA-AI Atacama Observatory |  | Af | IAA-AI Atacama, San Pedro de Atacama | 
| I17 | Thomas G. Cupillari Observatory Src |  | PA | Thomas G. Cupillari Observatory, Fleetville | 
| I18 | Fan Mountain Observatory |  | VA | Fan Mountain Observatory, Covesville | 
| I19 | El Gato Gris Observatory (Observatorio El Gato Gris) Src |  | Cór | Observatorio El Gato Gris, Tanti | 
| I20 | Salvador Observatory (Observatorio Astronomico Salvador) Src |  | Cór | Observatorio Astronomico Salvador, Rio Cuarto | 
| I21 | El Condor Observatory |  | Cór | El Condor Observatory, Córdoba | 
| I22 | Abbey Ridge Observatory, observer: David Lane | .svg.png.webp) | NS | Abbey Ridge Observatory, Stillwater Lake | 
| I23 | Frosty Cold Observatory |  | ME | Frosty Cold Observatory, Mash Harbor | 
| I24 | Lake of the Woods Observatory Src |  | VA | Lake of the Woods Observatory, Locust Grove | 
| I25 | ECCCO Observatory |  | Cór | ECCCO Observatory, Bosque Alegre | 
| I26 | Kappa Crucis Observatory (Observatorio Kappa Crucis) Ssrc |  | Cór | Observatorio Kappa Crucis, Cordoba | 
| I27 | Barred Owl Observatory | .svg.png.webp) | - | Barred Owl Observatory, Carp | 
| I28 | Starhoo Observatory |  | MA | Starhoo Observatory, Lakeville | 
| I29 | Middlesex School Observatory |  | MA | Middlesex School Observatory, Concord | 
| I30 | Geminis Austral Observatory (Observatorio Geminis Austral) |  | S | Observatorio Geminis Austral | 
| I31 | Colegio Cristo Rey Observatory (Observatorio Astronomico del Colegio Cristo Rey), Rosario |  | S | Observatorio Astronomico del Colegio Cristo Rey | 
| I32 | Beta Orionis Observatory (Observatorio Beta Orionis) |  | S | Observatorio Beta Orionis, Rosario | 
| I33 | Southern Astrophysical Research Telescope (SOAR) |  | - | SOAR, Cerro Pachon | 
| I34 | Morgantown Observatory |  | PA | Morgantown | 
| I35 | Sidoli Observatory (Observatorio Sidoli) |  | BA | Sidoli | 
| I36 | Los Campitos Observatory (Observatorio Los Campitos), Cañuelas |  | BA | Observatorio Los Campitos, Cañuela | 
| I37 | Astrodomi Observatory Src |  | BA | Astrodomi Observatory, Santa Rita | 
| I38 | Los Algarrobos Observatory (Observatorio Los Algarrobos) |  | - | Observatorio Los Algarrobos, Salto | 
| I39 | Cruz del Sur Observatory (Observatorio Cruz del Sur) Src |  | BA | Observatorio Cruz del Sur, San Justo | 
| I40 | TRAPPIST – Transiting Planets and Planetesimals Small Telescope |  | - | La Silla—TRAPPIST | 
| I41 | Zwicky Transient Facility (ZTF) and its predecessor Palomar Transient Factory (PTF) at Palomar Observatory |  | CA | Palomar Mountain—PTF Src Palomar Mountain—ZTF | 
| I42 | Westport Observatory |  | FL | Westport Observatory | 
| I43 | Tarleton State University Observatory |  | TX | Tarleton State University Obs., Stephenville | 
| I44 | Northwest Florida State College |  | FL | Northwest Florida State College, Niceville | 
| I45 | Observatorio W Crucis Src |  | BA | W Crucis Astronomical Observatory, San Justo | 
| I46 | The Cottage Observatory |  | PA | The Cottage Observatory, Altoona | 
| I47 | Pierre Auger Observatory Src |  | M | Pierre Auger Observatory, Malargüe | 
| I48 | El Catalejo Observatory (Observatorio El Catalejo), La Pampa |  | L | Observatorio El Catalejo, Santa Rosa | 
| I49 | Sunflower Observatory |  | NM | Sunflower Observatory, Santa Fe | 
| I50 | P2 Observatory |  | NM | P2 Observatory, Mayhill | 
| I51 | Clinton Observatory |  | MD | Clinton | 
| I52 | Mount Lemmon Observatory (CHECK: Mount Lemmon Survey) of the Steward Observatory |  | AZ | Steward Observatory, Mt. Lemmon Station | 
| I53 | Armilla Observatory |  | - | Armilla | 
| I54 | Las Vaguadas Observatory (Observatorio Las Vaguadas) |  | - | Observatorio Las Vaguadas, Badajoz | 
| I55 | Valencia Observatory |  | - | V | 
| I56 | John Beckman Observatory (Observatorio Astronómico John Beckman) |  | - | Observatorio Astronomico John Beckman, Almería | 
| I57 | Elche Observatory |  | - | Elche | 
| I58 | Bétera Observatory |  | - | Betera | 
| I59 | Antares Observatory (Observatorio Antares), Camargo, Cantabria |  | - | Observatorio Fuente de los matos, Muriedas | 
| I60 | Guernanderf Observatory |  | - | Guernanderf | 
| I61 | Ourense Observatory |  | - | Ourense | 
| I62 | Helios Ontigola Observatory (Observatorio Helios Ontigola) |  | - | Observatorio Helios Ontigola | 
| I63 | Cygnus Observatory |  | - | Cygnus Observatory, New Airesford | 
| I64 | Maidenhead Observatory |  | - | Maidenhead | 
| I65 | Yunquera Observatory |  | - | Yunquera | 
| I66 | Taurus Australis Observatory |  | DF | Taurus Australis Observatory, Brasilia | 
| I67 | Hartley Wintney Observatory |  | - | Hartley Wintney | 
| I68 | Pousada dos Anoẽs Observatory |  | - | Pousada dos Anoes Observatory | 
| I69 | AGM Observatory |  | - | AGM Observatory, Marrakech | 
| I70 | Gedney House Observatory |  | ENG | Gedney House Observatory, Kirton | 
| I71 | Los Milanos Observatory (Observatorio Los Milanos) |  | - | Observatorio Los Milanos, Caceres | 
| I72 | Carpe-Noctem Observatory (Observatorio Carpe-Noctem) |  | MD | Observatorio Carpe-Noctem, Madrid | 
| I73 | Salvia Observatory |  | - | Salvia Observatory, Saulges | 
| I74 | Baxter Garden Observatory Src |  | ENG | Baxter Garden Observatory, Salisbury | 
| I75 | Castellon Observatory (Observatorio Castellon) |  | - | Observatorio Castellon | 
| I76 | Tesla Observatory |  | - | Observatorio Tesla, Valdemorillo | 
| I77 | CEAMIG-REA Observatory |  | MG | CEAMIG-REA Observatory, Belo Horizonte | 
| I78 | Principia Observatory (Observatorio Principia) |  | - | Observatorio Principia, Málaga | 
| I79 | AstroCamp Observatory |  | - | AstroCamp, Nerpio | 
| I80 | Rose Cottage Observatory |  | ENG | Rose Cottage Observatory, Keighley | 
| I81 | Tarbatness Observatory |  | SCT | Tarbatness Observatory, Portmahomack | 
| I82 | Güímar Observatory |  | CN | Guimar | 
| I83 | Cherryvalley Observatory |  | - | Cherryvalley Observatory, Rathmolyon | 
| I84 | Cerro del Viento Observatory |  | - | Cerro del Viento, Badajoz | 
| I85 | Las Negras Observatory |  | - | Las Negras | 
| I86 | UCM Observatory (Observatorio UCM) |  | MD | Observatorio UCM, Madrid | 
| I87 | Astroshot Observatory |  | - | Astroshot Observatory, Monasterevin | 
| I88 | Fuensanta de Martos Observatory Src |  | - | Fuensanta de Martos | 
| I89 | RAS Observatory |  | - | iTelescope Observatory, Nerpio | 
| I90 | Blackrock Castle Observatory |  | - | Blackrock Castle Observatory | 
| I91 | Retamar Observatory |  | - | Retamar | 
| I92 | Astreo Observatory |  | - | Astreo Observatory, Mairena del Aljarafe | 
| I93 | Saint Pardon de Conques Observatory Src |  | - | St Pardon de Conques | 
| I94 | Rho Ophiocus Observatory (Observatorio Rho Ophiocus) |  | MD | Observatorio Rho Ophiocus, Las Rozas de Madrid | 
| I95 | Hita Observatory (Observatorio de la Hita) |  | - | Observatorio de la Hita | 
| I96 | Hyperion Observatory Src |  | - | Hyperion Observatory, Urbanizacion Caraquiz | 
| I97 | Penn Heights Observatory |  | - | Penn Heights Observatory, Rickmansworth | 
| I98 | El Berrueco Observatory |  | - | El Berrueco | 
| I99 | Blanquita Observatory (Observatorio Blanquita) Src |  | MD | Observatorio Blanquita, Vaciamadrid | 
| J00 | Segorbe Observatory |  | Castellon | Segorbe | 
| J01 | Cielo Profundo Observatory (Observatorio Cielo Profundo), Oviedo |  | - | Observatorio Cielo Profundo, Leon | 
| J02 | Busot Observatory |  | - | Busot | 
| J03 | Gothers Observatory |  | - | Gothers Observatory, St. Dennis | 
| J04 | OGS Telescope |  | CN | ESA Optical Ground Station, Tenerife | 
| J05 | Bootes Observatory |  | - | Bootes Observatory, Boecillo | 
| J06 | Trent Astronomical Observatory |  | - | Trent Astronomical Observatory, Clifton | 
| J07 | SPAG Monfragüe Observatroy (Observatorio SPAG Monfragüe) |  | - | Observatorio SPAG Monfrague, Palazuelo-Empalme | 
| J08 | Zonalunar Observatory (Observatorio Zonalunar) Src |  | V | Observatorio Zonalunar, Puzol | 
| J09 | Balbriggan Observatory |  | - | Balbriggan | 
| J10 | Alicante Observatory |  | - | Alicante | 
| J11 | Matosinhos Observatory |  | - | Matosinhos | 
| J12 | Caraquiz Observatory |  | - | Caraquiz | 
| J13 | Liverpool Telescope at La Palma |  | CN | La Palma-Liverpool Telescope | 
| J14 | La Corte Observatory |  | - | La Corte | 
| J15 | Muxagata Observatory |  | - | Muxagata | 
| J16 | An Carraig Observatory Src |  | NIR | An Carraig Observatory, Loughinisland | 
| J17 | Ragdon Observatory |  | - | Ragdon | 
| J18 | Dingle Observatory |  | WLS | Dingle Observatory, Montgomery | 
| J19 | El Maestrat Observatory |  | - | El Maestrat | 
| J20 | Aravaca Observatory |  | - | Aravaca | 
| J21 | El Boalo Observatory |  | - | El Boalo | 
| J22 | Tacande Observatory Src |  | CN | Tacande Observatory, La Palma | 
| J23 | La Couyere Observatory (Centre Astronomique de La Couyere) |  | - | Centre Astronomique de La Couyere | 
| J24 | Altamira Observatory (Observatorio Altamira) Src |  | CN | Observatorio Altamira | 
| J25 | Penamayor Observatory |  | - | Penamayor Observatory, Nava | 
| J26 | The Spaceguard Centre |  | - | The Spaceguard Centre, Knighton | 
| J27 | El Guijo Observatory Src |  | - | El Guijo Observatory | 
| J28 | Jaén Observatory (Observatorio Jaén) Src |  | - | Jaen | 
| J29 | Nira Observatory (Observatorio Nira) |  | - | Observatorio Nira, Tias | 
| J30 | Ventilla Observatory (Observatorio Ventilla) |  | MD | Observatorio Ventilla, Madrid | 
| J31 | La Axarquia Observatory |  | - | La Axarquia | 
| J32 | Aljaraque Observatory |  | - | Aljaraque | 
| J33 | Bayfordbury Observatory |  | ENG | University of Hertfordshire Obs., Bayfordbury | 
| J34 | La Fecha Observatory |  | - | La Fecha | 
| J35 | Tucci Observatory |  | - | Tucci Observatory, Martos | 
| J36 | DiezALaOnce Observatory (Observatorio DiezALaOnce) Src |  | - | Observatorio DiezALaOnce, Illana | 
| J37 | Huelva Observatory |  | - | Huelva | 
| J38 | La Vara Observatory (Observatorio La Vara) Src |  | - | Observatorio La Vara, Valdés | 
| J39 | Ingenio Observatory |  | - | Ingenio | 
| J40 | Málaga Observatory Src |  | - | Malaga | 
| J41 | Raheny Observatory |  | - | Raheny | 
| J42 | Puzol Observatory (Punto de Observación de Puçol; POP), observer: Amadeo Aznar Src |  | V | Puzol | 
| J43 | Oukaïmeden Observatory, Oukaïmeden, location of project MOSS (Src) |  | - | Oukaimeden Observatory, Marrakech | 
| J44 | Iturrieta Observatory (Observatorio Iturrieta) |  | - | Observatorio Iturrieta, Alava | 
| J45 | MT Cabreja Observatory (Observatorio Montana Cabreja), Gran Canaria Src |  | CN | Observatorio Montana Cabreja, Vega de San Mateo | 
| J46 | MT Blanca Observatory (Observatorio Montana Blanca) |  | - | Observatorio Montana Blanca, Tias | 
| J47 | Nazaret Observatory (Observatorio Nazaret) |  | - | Observatorio Nazaret | 
| J48 | Observatory Mackay |  | - | Observatory Mackay, La Laguna | 
| J49 | Santa Pola Observatory |  | - | Santa Pola | 
| J50 | NEON Observatory at La Palma |  | CN | La Palma-NEON | 
| J51 | Atlante Observatory (Observatorio Atlante) Src |  | CN | Observatorio Atlante, Tenerife | 
| J52 | Pinsoro Observatory (Observatorio Pinsoro) |  | - | Observatorio Pinsoro | 
| J53 | Posadas Observatory |  | - | Posadas | 
| J54 | Bradford Robotic Telescope, Tenerife |  | CN | Bradford Robotic Telescope | 
| J55 | Los Altos de Arguineguin Observatory |  | - | Los Altos de Arguineguin Observatory | 
| J56 | La Avejerilla Observatory (Observatorio La Avejerilla) |  | - | Observatorio La Avejerilla | 
| J57 | Alto Turia Observatory (Centro Astronómico Alto Turia) |  | V | Centro Astronomico Alto Turia, Valencia | 
| J58 | Brynllefrith Observatory |  | WLS | Brynllefrith Observatory, Llantwit Fardre | 
| J59 | Linceo Observatory (Observatorio Linceo) |  | CB | Observatorio Linceo, Santander | 
| J60 | Tocororo Observatory |  | CL | Tocororo Observatory, Arquillinos | 
| J61 | Brownstown Observatory |  | - | Brownstown Observatory, Kilcloon | 
| J62 | Kingsland Observatory |  | - | Kingsland Observatory, Boyle | 
| J63 | San Gabriel Observatory |  | - | San Gabriel | 
| J64 | La Mata Observatory |  | - | La Mata | 
| J65 | Celbridge Observatory |  | - | Celbridge | 
| J66 | Kinver Observatory |  | - | Kinver | 
| J67 | La Pobla de Vallbona Observatory (Observatorio La Pobla de Vallbona) |  | V | Observatorio La Po bla de Vallbona | 
| J68 | Tweenhills Observatory, Gloucestershire |  | ENG | Tweenhills Observatory, Hartpury | 
| J69 | North Observatory |  | ENG | North Observatory, Clanfield | 
| J70 | Vega del Thader Observatory (Observatorio Astronómico Vega del Thader) Src |  | - | Obs. Astronomico Vega del Thader, El Palmar | 
| J71 | Willow Bank Observatory, Lancashire |  | ENG | Willow Bank Observatory | 
| J72 | Valle del Sol Observatory |  | - | Valle del Sol | 
| J73 | Quainton Observatory, Buckinghamshire Src |  | ENG | Quainton | 
| J74 | Bilbao Observatory |  | Biscay | Bilbao | 
| J75 | La Sagra Observatory (Observatorio Astronómico de La Sagra; OLS) Src; a remote station of OAM, see #620 |  | - | OAM Observatory, La Sagra | 
| J76 | La Murta Observatory |  | - | La Murta | 
| J77 | Golden Hill Observatory, Dorset |  | ENG | Golden Hill Observatory, Stourton Caundle | 
| J78 | Murcia Observatory |  | - | Murcia | 
| J79 | Calarreona Observatory (Observatorio Calarreona) |  | Murcia | Observatorio Calarreona, Águilas | 
| J80 | Sainte-Hélène Observatory, Sainte-Hélène, Gironde |  | - | Sainte Helene | 
| J81 | Guirguillano Observatory |  | - | Guirguillano | 
| J82 | Leyland Observatory |  | - | Leyland | 
| J83 | Olive Farm Observatory |  | - | Olive Farm Observatory, Hoghton | 
| J84 | South Observatory |  | - | South Observatory, Clanfield | 
| J85 | Makerstoun Observatory |  | - | Makerstoun | 
| J86 | Sierra Nevada Observatory (Observatorio de Sierra Nevada; OSN), Loma de Dilar |  | Granada | Sierra Nevada Observatory | 
| J87 | La Cañada Observatory (Observatorio de La Cañada), Ávila |  | CL | La Canada | 
| J88 | Strawberry Field Observatory |  | ENG | Strawberry Field Obs., Southampton | 
| J89 | Tres Cantos Observatory |  | - | Tres Cantos Observatory | 
| J90 | West Challow Observatory |  | - | West Challow | 
| J91 | Alt emporda Observatory |  | - | Alt emporda Observatory, Figueres | 
| J92 | Beaconsfield Observatory |  | - | Beaconsfield | 
| J93 | Mount Tuffley Observatory |  | ENG | Mount Tuffley Observatory, Gloucester | 
| J94 | Abbeydale Observatory, Gloucester |  | ENG | Abbeydale | 
| J95 | Great Shefford Observatory, Berkshire |  | ENG | Great Shefford | 
| J96 | Cantabria Observatory (Observatorio de Cantabria) |  | CB | Observatorio de Cantabria | 
| J97 | Alginet Observatory |  | V | Alginet | 
| J98 | Manises Observatory (Observatorio Manises) |  | V | Observatorio Manises | 
| J99 | Burjassot Observatory |  | V | Burjassot | 
| K00 | Hanau Observatory |  | - | Hanau | 
| K01 | Astrognosis Observatory |  | - | Astrognosis Observatory, Bradwell | 
| K02 | Eastwood Observatory |  | - | Eastwood Observatory, Leigh on Sea | 
| K03 | Montsec Observatory (Observatori Astronòmic del Montsec; OAdM) Src |  | CT | Observatori AAS Montsec | 
| K04 | Lo Fossil Observatory |  | CT | Lo Fossil Observatory, Àger | 
| K05 | Eden Observatory |  | ENG | Eden Observatory, Banham | 
| K06 | Montagut Observatory (Observatorio Montagut) |  | CT | Observatorio Montagut, Can Sola | 
| K07 | Gravelle Observatory (Observatoire de Gravelle) |  | Paris | Observatoire de Gravelle, St. Maurice | 
| K08 | Lledoner Observatory (Observatorio Lledoner) |  | CT | Observatorio Lledoner, Vallirana | 
| K09 | Llica d'Amunt Observatory (Observatori Astronomic de Lliçà d'Amunt) |  | - | Llica d'Amunt | 
| K10 | Micro Palomar |  | - | Micro Palomar, Reilhanette | 
| K11 | Pommier Observatory (Observatoire de Pommier) |  | - | Observatoire de Pommier | 
| K12 | Marratxi Observatory (Observatorio Astronómico de Marratxi) |  | - | Observatorio Astronomico de Marratxi | 
| K13 | Albireo Observatory |  | - | Albireo Observatory, Inca | 
| K14 | Sencelles Observatory (Observatorio de Sencelles) |  | - | Observatorio de Sencelles | 
| K15 | Murviel-lès-Montpellier Observatory |  | - | Murviel-les-Montpellier | 
| K16 | Reilhanette Observatory |  | - | Reilhanette | 
| K17 | Valentines Observatory (Observatoire des Valentines) | .svg.png.webp) | SWF | Observatoire des Valentines, Bex | 
| K18 | Hésingue Observatory |  | - | Hesingue | 
| K19 | PASTIS Observatory |  | - | PASTIS Observatory, Banon | 
| K20 | Danastro Observatory | .svg.png.webp) | - | Danastro Observatory, Romerée | 
| K21 | Saint-Saturnin-lès-Avignon |  | - | Saint-Saturnin-les-Avignon | 
| K22 | Les Barres Observatory |  | - | Les Barres Observatory, Lamanon | 
| K23 | Gorgonzola Observatory |  | - | Gorgonzola | 
| K24 | Schmelz Observatory |  | - | Schmelz | 
| K25 | Haute Provence Sud, Saint-Michel-l'Observatoire, see #511 |  | PACA | Haute Provence Sud, Saint-Michel-l'Observatoire | 
| K26 | Contern |  | - | Contern | 
| K27 | St-Martin Observatory, Amathay Vésigneux |  | - | St-Martin Observatory, Amathay Vesigneux | 
| K28 | Sternwarte Eckdorf |  | - | Sternwarte Eckdorf | 
| K29 | Stellarium Gornergrat | .svg.png.webp) | SWG | Stellarium Gornergrat | 
| K30 | Lüscherz Observatory | .svg.png.webp) | SWG | Luscherz | 
| K31 | Osservatorio Astronomico di Bellino |  | - | Osservatorio Astronomico di Bellino | 
| K32 | Maritime Alps Observatory, Cuneo |  | - | Maritime Alps Observatory, Cuneo | 
| K33 | San Defendente |  | - | San Defendente | 
| K34 | Turin |  | - | Turin | 
| K35 | Huenfelden Observatory |  | - | Huenfelden | 
| K36 | Ebersheim Observatory |  | - | Ebersheim | 
| K37 | Cereseto Observatory |  | - | Cereseto | 
| K38 | M57 Observatory |  | - | M57 Observatory, Saltrio | 
| K39 | Serra Observatory |  | - | Serra Observatory | 
| K40 | Altdorf Observatory |  | - | Altdorf | 
| K41 | Vegaquattro Astronomical Observatory |  | - | Vegaquattro Astronomical Obs., Novi Ligure | 
| K42 | Knielingen Observatory |  | - | Knielingen | 
| K43 | OVM Observatory |  | Lo | OVM Observatory, Chiesa in Valmalencom | 
| K44 | Marienburg Observatory (Marienburg Sternwarte) |  | - | Marienburg Sternwarte, Hildesheim | 
| K45 | Punta Falcone Observatory (Osservatorio Astronomico di Punta Falcone) |  | - | Oss. Astronomico di Punta Falcone, Piombino | 
| K46 | Bamberg Observatory |  | - | Bamberg | 
| K47 | BSCR Observatory |  | - | BSCR Observatory, Santa Maria a Monte | 
| K48 | Keyhole Observatory |  | - | Keyhole Observatory, San Giorgio di Mantova | 
| K49 | Carpione Observatory |  | - | Carpione Observatory, Spedaletto | 
| K50 | Feuerstein Observatory (Sternwarte Feuerstein) |  | - | Sternwarte Feuerstein, Ebermannstadt | 
| K51 | Celado Observatory (Osservatorio del Celado) |  | - | Osservatorio del Celado, Castello Tesino | 
| K52 | Gwen Observatory |  | - | Gwen Observatory, San Francesco al Campo | 
| K53 | Marina di Cerveteri |  | - | Marina di Cerveteri | 
| K54 | Astronomical Observatory University of Siena |  | - | Astronomical Observatory University of Siena | 
| K55 | Wallhausen Observatory |  | - | Wallhausen | 
| K56 | Osservatorio di Foligno |  | - | Osservatorio di Foligno | 
| K57 | Fiore Observatory |  | - | Fiore Observatory | 
| K58 | Gevelsberg Observatory |  | - | Gevelsberg | 
| K59 | Elsterland Observatory, Jeßnigk |  | - | Elsterland Observatory, Jessnigk | 
| K60 | Lindby Observatory |  | - | Lindby | 
| K61 | Rokycany Observatory |  | - | Rokycany Observatory | 
| K62 | Teplice Observatory |  | - | Teplice Observatory | 
| K63 | G. Pascoli Observatory |  | - | G. Pascoli Observatory, Castelvecchio Pascoli | 
| K64 | Waizenreuth Observatory |  | - | Waizenreuth | 
| K65 | Cesena Observatory |  | - | Cesena | 
| K66 | Osservatorio Astronomico di Anzio |  | - | Osservatorio Astronomico di Anzio | 
| K67 | Bayerwald Sternwarte, Spiegelau, see #C69 |  | - | Bayerwald Sternwarte, Spiegelau | 
| K68 | Osservatorio Elianto |  | - | Osservatorio Elianto, Pontecagnano | 
| K69 | Riethnordhausen Observatory |  | - | Riethnordhausen | 
| K70 | Rosarno Observatory |  | - | Rosarno | 
| K71 | Neutraubling Observatory |  | - | Neutraubling | 
| K72 | Celico Observatory |  | - | Celico | 
| K73 | Gravina in Puglia |  | - | Gravina in Puglia | 
| K74 | Muensterschwarzach Observatory |  | - | Muensterschwarzach Observatory, Schwarzach | 
| K75 | Astro Dolomites Observatory |  | - | Astro Dolomites, Santa Cristina Valgardena | 
| K76 | BSA Osservatorio |  | - | BSA Osservatorio, Savigliano | 
| K77 | EHB01 Observatory |  | - | EHB01 Observatory, Engelhardsberg | 
| K78 | iota Scorpii Observatory, obs.: Giulio Scarfì |  | Li | iota Scorpii Observatory, La Spezia | 
| K79 | Erfurt Observatory |  | TH | Erfurt | 
| K80 | Platanus Observatory |  | WV | Platanus Observatory, Lusówko | 
| K81 | P.M.P.H.R. Deep Sky Observatory |  | La | P.M.P.H.R. Deep Sky Observatory, Atina | 
| K82 | Alphard Observatory |  | - | Alphard Observatory, Ostuni | 
| K83 | Beppe Forti Astronomical Observatory |  | Tu | Beppe Forti Astronomical Observatory, Montelupo | 
| K84 | Felliscopio Observatory Src Archived 2021-11-11 at the Wayback Machine |  | ER | Felliscopio Observatory, Fellicarolo | 
| K85 | Kelmis Observatory | .svg.png.webp) | VAL | Kelmis | 
| K86 | Brescia Observatory |  | Lo | Brescia | 
| K87 | Dettelbach Vineyard Observatory |  | FB | Dettelbach Vineyard Observatory | 
| K88 | GINOP-KHK, (see #461, #561 and #053), GINOP program: Src |  | - | GINOP-KHK, Piszkéstető | 
| K89 | Digital Stargate Observatory |  | Tu | Digital Stargate Observatory, Manciano | 
| K90 | Sopot Astronomical Observatory |  | - | Sopot Astronomical Observatory | 
| K91 | Sutherland-LCO A |  | - | Sutherland-LCO A | 
| K92 | Sutherland-LCO B |  | - | Sutherland-LCO B | 
| K93 | Sutherland-LCO C |  | - | Sutherland-LCO C | 
| K94 | Sutherland Observatory |  | - | Sutherland | 
| K95 | MASTER-SAAO Telescope |  | - | MASTER-SAAO Observatory, Sutherland | 
| K96 | Savelli Observatory, Savelli |  | Cal | Savelli Observatory | 
| K97 | Freconrupt Observatory |  | BR | Freconrupt | 
| K98 | 6ROADS Observatory 1 |  | WV | 6ROADS Observatory 1, Wojnowko | 
| K99 | Derenivka Observatory |  | - | Derenivka Observatory | 
| L00 | East Rome Observatory |  | - | East Rome Observatory, Rome | 
| L01 | Tičan Observatory (new Višnjan Observatory), also see #120 |  | – | Višnjan Observatory, Tičan | 
| L02 | NOAK Observatory |  | - | NOAK Observatory, Stavraki | 
| L03 | SGT Observatory |  | UA | SGT Observatory, Gaflenz | 
| L04 | ROASTERR-1 Observatory |  | - | ROASTERR-1 Observatory, Cluj-Napoca | 
| L05 | Dridri Observatory |  | Lo | Dridri Observatory, Franciacorta | 
| L06 | Sormano 2 Observatory, also see #587 |  | Lo | Sormano 2 Observatory, Bellagio Via Lattea | 
| L07 | Salvatore di Giacomo Observatory (Osservatorio Salvatore di Giacomo) |  | Cam | Osservatorio Salvatore di Giacomo, Agerola | 
| L08 | Metsähovi Optical Telescope |  | - | Metsahovi Optical Telescope, Metsahovi | 
| L09 | Sutherland-LCO Aqawan |  | NC | Sutherland-LCO Aqawan A #1 | 
| L10 | Kryoneri Observatory, Kryoneri |  | - | Kryoneri Observatory | 
| L11 | Sandvreten Observatory |  | Up | Sandvreten Observatory | 
| L12 | Koksijde Observatory | .svg.png.webp) | VLG | Koksijde | 
| L13 | Stardust Observatory Src |  | - | Stardust Observatory, Brasov | 
| L14 | Vaulx-en-Velin Observatory |  | Lyon | Planetarium de Vaulx-en-Velin Observatory | 
| L15 | St. George Observatory (not to be confused with: St. George Observatory, Louisiana, USA Src Archived 2017-05-24 at the Wayback Machine) |  | - | St. George Observatory, Ploiești | 
| L16 | Stardreams Observatory |  | - | Stardreams Observatory, Valenii de Munte | 
| L17 | Albanyà Observatory, Albanyà |  | CT | Observatori Astronomic Albanya | 
| L18 | QOS Observatory |  | - | QOS Observatory, Zalistsi | 
| L19 | Felsina Observatory (Osservatorio Felsina) AAB, Montepastore |  | - | Osservatorio Felsina AAB, Montepastore | 
| L20 | Sarajevo Observatory |  | - | AG\_Sarajevo Observatory, Sarajevo | 
| L21 | Ostrov Observatory |  | - | Ostrov Observatory, Constanta | 
| L22 | Bârlad Observatory |  | - | Barlad Observatory | 
| L23 | Schela Observatory Src |  | - | Schela Observatory | 
| L24 | Gauteng Observatory (Gauteng City-Region Observatory; GCRO) Src |  | Gauteng | Gauteng | 
| L25 | Smolęcin Observatory |  | WPV | Smolecin | 
| L26 | Sanderphil Urban Observatory |  | La | Sanderphil Urban Observatory, Civitavecchia | 
| L27 | 29PREMOTE Observatory |  | AHP | 29PREMOTE Observatory, Dauban | 
| L28 | ISON-Castelgrande Observatory, Castelgrande, Basilicata |  | B | ISON-Castelgrande Observatory | 
| L29 | Drebach-South Observatory |  | - | Drebach-South Observatory, Windhoek | 
| L30 | Lohbach Observatory, Benninghofen, Dortmund |  | NRW | Lohbach Observatory, Benninghofen | 
| L31 | RaSo Observatory |  | SN | RaSo Observatory, Chemnitz | 
| L32 | Korea Microlensing Telescope Network (at SAAO) |  | - | Korea Microlensing Telescope Network-SAAO | 
| L33 | Ananjev Observatory (Private astronomical observatory Ananjev) Src |  | Odesa | Ananjev | 
| L34 | Galhassin Robotic Telescope |  | Si | Galhassin Robotic Telescope, Isnello | 
| L35 | DreamSky Observatory |  | - | DreamSky Observatory, Lisnyky | 
| L36 | BlueEye600 Telescope (at Ondřejov Observatory) |  | - | Ondrejov—BlueEye600 Telescope | 
| L37 | Alnitak Observatory |  | Cádiz | Observatorio Alnitak, El Puerto de Santa María | 
| L38 | Schafsweide Observatory (Gartensternwarte Schafsweide) |  | - | Gartensternwarte Schafsweide, Schelde | 
| L39 | Spica Observatory (Osservatorio Spica) |  | - | Osservatorio Spica, Signa | 
| L40 | Rastpfuhl Observatory (Sternwarte Saarbruecken Rastpfuhl) |  | S | Sternwarte Saarbruecken Rastpfuhl | 
| L41 | Ponte Uso Observatory |  | - | Ponte Uso | 
| L42 | Observatory-Astrocamp Manciano |  | - | Observatory-Astrocamp Manciano | 
| L43 | Ager Observatory |  | CT | Ager, Leida | 
| L44 | AstroVal Observatory | .svg.png.webp) | SWF | AstroVal, Le Chenit | 
| L45 | ObsCT Observatory |  | - | ObsCT, Catania | 
| L46 | Majadahonda Observatory |  | - | Observatorio Majadahonda | 
| L47 | Piobbico Observatory |  | - | Osservatorio Astronomico, Piobbico | 
| L48 | Baia Mare Observatory |  | - | Baia Mare | 
| L49 | Vega Observatory (VEGA-Sternwarte) |  | - | VEGA-Sternwarte, Dorfleiten | 
| L50 | GenShtab Observatory |  | - | GenShtab Observatory, Nauchnij | 
| L51 | MARGO (Gennadiy Borisov's observatory) |  | - | MARGO, Nauchnij | 
| L52 | MASTER-Tavrida |  | - | MASTER-Tavrida | 
| L53 | Lomazzo Observatory |  | Lo | Lomazzo Observatory, Como | 
| L54 | Berthelot Observatory |  | - | Berthelot Observatory, Hunedoara | 
| L55 | Sura Gardens Observatory |  | - | Sura Gardens, Dnipro | 
| L56 | Limburg Observatory (Sternwarte Limburg) |  | Hesse | Sternwarte Limburg, Limburg | 
| L57 | Bacău Observatory, Bacău |  | - | Bacau Observatory, Bacau | 
| L58 | Heavenly Owl Observatory |  | - | Heavenly Owl observatory | 
| L59 | Compustar Observatory |  | NOR | Compustar Observatory, Rouen | 
| L60 | Popovich Observatory |  | - | Popovich Observatory, Ivanivka | 
| L61 | MONET South Observatory |  | - | MONET South, Sutherland | 
| L62 | Hypatia Observatory |  | - | Hypatia Observatory, Rimini | 
| L63 | HOB Observatory, Capraia e Limite |  | - | HOB Observatory, Capraia Fiorentina | 
| L64 | Martesana Observatory, Cassina de' Pecchi |  | - | Martesana Observatory, Cassina de Pecchi | 
| L65 | Bredenkamp Observatory |  | - | Bredenkamp Observatory, Bremen | 
| L66 | MeerLICHT-1 at South African Astronomical Observatory |  | - | MeerLICHT-1, Sutherland | 
| L67 | Cherkizovo Observatory |  | - | Cherkizovo Observatory, Moscow Oblast | 
| L68 | PESCOPE Observatory |  | - | PESCOPE, Port Elizabeth | 
| L69 | LaCaille Observatory |  | - | LaCaille Observatory, Pretoria | 
| L70 | Zvjezdarnica Observatory |  | - | Zvjezdarnica Graberje, Zagreb | 
| L71 | Vedrus Observatory |  | Krasnodar | Vedrus Observatory, Azovskaya | 
| L72 | Melezhy Astrophoto Observatory |  | Moscow | Melezhy Astrophoto Observatory | 
| L73 | Blessed Hermann Observatory (Osservatorio Beato Ermanno) (Src) |  | Tu | Blessed Hermann Observatory, Impruneta | 
| L74 | AstroColauri Observatory |  | Cam | AstroColauri, Naples | 
| L75 | Tartu Observatory of University of Tartu (see 075 for the Tartu Old Observatory) |  | - | Tartu Observatory of Tartu University | 
| L76 | Nomad Observatory |  | - | Nomad Observatory, Kochevanchik | 
| L77 | RDSS, Kovalevka |  | - | RDSS, Kovalevka | 
| L78 | Marco Observatory |  | Cam | Marco Observatory, Salerno | 
| L79 | BOSZA Observatory |  | - | BOSZA Observatory, Szalanta | 
| L80 | SpringBok Observatory, Tivoli Astro Farm |  | - | SpringBok Observatory, Tivoli | 
| L81 | Skygems Namibia Remote Observatory |  | - | Skygems Namibia Remote Observatory | 
| L82 | Crow Observatory |  | - | Crow Observatory, Portalegre | 
| L83 | UJA Observatory |  | Andalusia | UJA Observatory, Jaen | 
| L84 | Letnik Observatory |  | - | Letnik, Rostov Oblast | 
| L85 | BiAnto Observatory |  | Cal | BiAnto Observatory, Lauria | 
| L86 | Giordano Bruno Observatory |  | Lo | Giordano Bruno Observatory, Brallo | 
| L87 | Moonbase South Observatory |  | - | Moonbase South Observatory, Hakos | 
| L88 | Le Pleiadi Station (Stazione Astronomica Le Pleiadi) |  | Bas | Stazione Astronomica Le Pleiadi, Pantane | 
| L89 | PAO Observatory |  | Tus | PAO, Prato | 
| L90 | ABObservatory |  | Cal | ABObservatory, Rosarno | 
| L91 | Antares MTM Observatory, San Donato Val di Comino |  | Laz | Antares MTM Observatory, S. Donato | 
| L92 | San Costantino Observatory, (San Costantino di Briatico) |  | Cal | Toni Scarmato's Observatory | 
| L93 | Garraf Observatory |  | CT | Garraf Observatory, Sant Pere de Ribes | 
| L94 | MOMA Observatory (Observatorio MOMA) |  | Asturias | Observatorio MOMA, Oviedo | 
| L95 | Canteras Observatory |  | Murcia | Canteras, Murcia | 
| L96 | ISON-Byurakan Observatory |  | - | ISON-Byurakan Observatory | 
| L97 | Castle Fields Observatory |  | ENG | Castle Fields Observatory, Calne | 
| L98 | La Sagra Observatory |  | Granada | La Sagra Observatory, Puebla de Don Fadrique | 
| L99 | Novoselki Observatory |  | - | Novoselki | 
| M03 | Badalona Boreal Observatory |  | CL | Badalona Boreal | 
| M10 | CPF Observatory, Saint-Vallier-de-Thiey |  | - | CPF Observatory, St Vallier de Thiey | 
| M15 | Virgo Observatory |  | Lo | Virgo Oservatory, Seveso | 
| M18 | Koeditz Observatory |  | Ba | Koeditz | 
| M20 | Polse di Cougnes Observatory |  | F | Polse di Cougnes Observatory, Zuglio | 
| M22 | ATLAS–SAAO |  | - | ATLAS South Africa, Sutherland | 
| M28 | Lesedi Telescope, South African Astronomical Observatory |  | NC | Lesedi Telescope-SAAO Observatory, Sutherland | 
| M33 | OWL-Net |  | - | OWL-Net, Mitzpe Ramon | 
| M42 | Emirates Observatory |  | - | Emirates Observatory, Al Rahba | 
| M43 | Al Sadeem Observatory |  | - | Al Sadeem Observatory, Abu Dhabi | 
| M44 | Al-Khatim Observatory |  | - | Al-Khatim Observatory, Abu Dhabi | 
| M46 | Althuraya Astronomy Center |  | - | Althuraya Astronomy Center, Dubai | 
| M47 | Sharjah Observatory |  | - | Sharjah Observatory, Sharjah | 
| M90 | Chervishevo Observatory |  | - | Chervishevo | 
| N27 | Omsk-Yogik Observatory |  | - | Omsk-Yogik Observatory | 
| N30 | Zeds Astronomical Observatory |  | - | Zeds Astronomical Observatory, Lahore | 
| N31 | Eden Astronomical Observatory (Src) |  | - | Eden Astronomical Observatory, Lahore | 
| N42 | Tien-Shan Astronomical Observatory |  | - | Tien-Shan Astronomical Observatory | 
| N43 | Plateau Observatory for Dome A, at Chinese Kunlun Station |  | – | Plateau Observatory for Dome A, Kunlun Station | 
| N50 | Himalayan Chandra Telescope |  | - | Himalayan Chandra Telescope, IAO, Hanle | 
| N51 | GROWTH India Telescope |  | - | GROWTH India Telescope, IAO, Hanle | 
| N55 | Corona Borealis Observatory |  | - | Corona Borealis Observatory, Ngari | 
| N56 | Zijinshan-Beimian Survey, Ngari Prefecture |  | - | Zijinshan-Beimian Survey, Ali | 
| N82 | Multa Observatory |  | - | Multa Observatory | 
| N86 | Xingming Observatory-KATS |  | - | Xingming Observatory-KATS, Nanshan | 
| N87 | Nanshan Station of the Xinjiang Observatory |  | - | Nanshan Station, Xinjiang Observatory | 
| N88 | Xingming Observatory #3, Nanshan |  | - | Xingming Observatory #3, Nanshan | 
| N89 | Xingming Observatory #2 |  | - | Xingming Observatory #2, Nanshan | 
| O02 | Galaxy Tibet YBJ Observatory |  | Tibet | Galaxy Tibet YBJ Observatory, Yangbajing | 
| O37 | TRT-NEO Observatory |  | - | TRT-NEO, Chiangmai | 
| O43 | Observatori Negara |  | - | Observatori Negara, Langkawi | 
| O44 | Lijiang Station, Yunnan Observatories |  | - | Lijiang Station, Yunnan Observatories | 
| O45 | Yunnan-HK Observatory |  | - | Yunnan-HK Observatory, Gaomeigu | 
| O47 | Yunling Observatory |  | - | Yunling Observatory, Yunnan | 
| O48 | Purple Mountain Observatory, Yaoan Station, 0.8-meter |  | - | Purple Mountain Observatory, Yaoan (0.8-m) | 
| O49 | Yaoan Station of the Purple Mountain Observatory |  | - | Purple Mountain Observatory, Yaoan Station | 
| O50 | Hin Hua Observatory |  | - | Hin Hua Observatory, Klang | 
| O72 | OWL-Net, Songino Khairkhan |  | - | OWL-Net, Songino | 
| O75 | ISON-Hureltogoot Observatory |  | - | ISON-Hureltogoot Observatory | 
| O85 | LiShan Observatory |  | - | LiShan Observatory, Lintong | 
| P18 | Birch Forest Observatory, Lǎbāgōumén |  | - | Birch Forest Observatory, LaBaGouMen | 
| P25 | Kinmen Educational Remote Observatory |  | - | Kinmen Educational Remote Observatory, Jincheng | 
| P30 | Jiangnantianchi Observatory, Anji County |  | - | Jiangnantianchi Observatory, Anji | 
| P31 | Starlight Observatory |  | ZJ | Starlight Observatory, Tianhuangping | 
| P34 | Lvye Observatory |  | - | Lvye Observatory, Suzhou | 
| P35 | Cuteip Remote Observatory |  | - | Cuteip Remote Observatory, Changhua | 
| P36 | ULTRA Observatory |  | - | ULTRA Observatory, Suzhou | 
| P37 | HuiWen High School Observatory Src |  | TWN | HuiWen High School Observatory, Taichung City | 
| P40 | Chinese Culture University Observatory |  | - | Chinese Culture University, Taipei | 
| P48 | ASTEP Observatory |  | - | ASTEP, Concordia Station | 
| P64 | GSHS Observatory |  | - | GSHS Observatory, Suwon | 
| P65 | OWL-Net, Daedeoksan (Samcheok/Taebaek) |  | - | OWL-Net, Daedeok | 
| P66 | Deokheung Optical Astronomy Observatory |  | - | Deokheung Optical Astronomy Observatory | 
| P67 | Kangwon National University Observatory |  | - | Kangwon National University Observatory | 
| P71 | Miryang Arirang Astronomical Observatory |  | South Gyeongsang | Miryang Arirang Astronomical Observatory | 
| P72 | OWL-Net, Bohyeonsan |  | - | OWL-Net, Mt. Bohyun | 
| P73 | BSH Byulsem Observatory |  | - | BSH Byulsem Observatory, Busan | 
| P87 | Hirao Observatory, Yamaguchi Prefecture |  | - | Hirao Observatory, Yamaguchi | 
| P93 | Space Tracking and Communications Center |  | - | Space Tracking and Communications Center, JAXA | 
| Q02 | Sakai Observatory |  | - | Sakai Observatory, Osaka | 
| Q11 | Shinshiro Observatory |  | 23 | Shinshiro | 
| Q12 | Nagano Observatory (also see #D81) |  | - | Nagano Observatory | 
| Q19 | Machida Observatory |  | - | Machida | 
| Q21 | Southern Utsunomiya Observatory |  | - | Southern Utsunomiya | 
| Q23 | Sukagawa Observatory |  | - | Sukagawa | 
| Q24 | Katori Observatory |  | - | Katori | 
| Q33 | Nayoro Observatory |  | - | Nayoro Observatory, Hokkaido University | 
| Q38 | Lake Boga Observatory (Swan Hill Observatory) Src Archived 2021-11-11 at the Wayback Machine | .svg.png.webp) | Vic | Swan Hill | 
| Q54 | Harlingten Telescope, Greenhill Observatory | .svg.png.webp) | TAS | Harlingten Telescope, Greenhill Observatory | 
| Q55 | SkyMapper at Siding Spring Observatory | .svg.png.webp) | NSW | SkyMapper, Siding Spring | 
| Q56 | Heaven's Mirror Observatory | .svg.png.webp) | NSW | Heaven's Mirror Observatory, Yass | 
| Q57 | Korea Microlensing Telescope Network-SSO | .svg.png.webp) | NSW | Korea Microlensing Telescope Network-SSO | 
| Q58 | Siding Spring Observatory: LCO Clamshell #1 | .svg.png.webp) | NSW | Siding Spring-LCO Clamshell #1 | 
| Q59 | Siding Spring Observatory: LCO Clamshell #2 (Las Cumbres Observatory Global Telescope) | .svg.png.webp) | NSW | Siding Spring-LCO Clamshell #2 | 
| Q60 | Siding Spring Observatory: ISON-SSO Observatory | .svg.png.webp) | NSW | ISON-SSO Observatory, Siding Spring | 
| Q61 | Siding Spring Observatory: PROMPT | .svg.png.webp) | NSW | PROMPT, Siding Spring | 
| Q62 | Siding Spring Observatory: iTelescope Observatory | .svg.png.webp) | NSW | iTelescope Observatory, Siding Spring | 
| Q63 | Siding Spring Observatory: LCO A (Las Cumbres Observatory Global Telescope) | .svg.png.webp) | NSW | Siding Spring-LCO A | 
| Q64 | Siding Spring Observatory: LCO B (Las Cumbres Observatory Global Telescope) | .svg.png.webp) | NSW | Siding Spring-LCO B | 
| Q65 | Warrumbungle Observatory | .svg.png.webp) | NSW | Warrumbungle Observatory | 
| Q66 | Siding Spring Observatory: Janess-G, JAXA | .svg.png.webp) | NSW | Siding Spring-Janess-G, JAXA | 
| Q67 | JBL Observatory | .svg.png.webp) | NSW | JBL Observatory, Bathurst | 
| Q68 | Blue Mountains Observatory | .svg.png.webp) | NSW | Blue Mountains Observatory, Leura | 
| Q69 | Hazelbrook (O'Day) | .svg.png.webp) | NSW | Hazelbrook (O'Day) | 
| Q70 | Glenlee Observatory Observatory | .svg.png.webp) | QLD | Glenlee Observatory, Glenlee | 
| Q78 | Woogaroo Observatory, Forest Lake | .svg.png.webp) | QLD | Woogaroo Observatory, Forest Lake | 
| Q79 | Samford Valley Observatory Src | .svg.png.webp) | Qld | Samford Valley Observatory | 
| Q80 | Birkdale Observatory | .svg.png.webp) | Qld | Birkdale | 
| Q81 | Caloundra West Observatory | .svg.png.webp) | Qld | Caloundra West | 
| R57 | Aorangi Iti Observatory, also see #474 |  | Ca | Aorangi Iti Observatory, Lake Tekapo | 
| R58 | Beverly-Begg Observatory |  | Otg | Beverly-Begg Observatory, Dunedin | 
| R65 | R. F. Joyce Observatory |  | - | R. F. Joyce Observatory, Christchurch | 
| R66 | Mooray Observatory |  | - | Mooray Observatory, Christchurch | 
| T03 | Haleakala-LCO Clamshell #3 |  | HI | Haleakala-LCO Clamshell #3 | 
| T04 | Haleakala-LCO OGG B #2 |  | HI | Haleakala-LCO OGG B #2 | 
| T05 | Asteroid Terrestrial-impact Last Alert System (ATLAS-HKO; at Haleakala Observatory) Src |  | HI | ATLAS-HKO, Haleakala | 
| T07 | ATLAS-MLO Auxiliary Camera |  | - | ATLAS-MLO Auxiliary Camera, Mauna Loa | 
| T08 | Asteroid Terrestrial-impact Last Alert System (ATLAS-MLO; at Mauna Loa Observatory) Src |  | HI | ATLAS-MLO, Mauna Loa | 
| T09 | Mauna Kea-UH/Tholen NEO Follow-Up (Subaru) |  | HI | Mauna Kea-UH/Tholen NEO Follow-Up (Subaru) | 
| T10 | Submillimeter Array (SMA), Mauna Kea Observatories |  | HI | Submillimeter Array, Mauna Kea (SMA) | 
| T12 | Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m) Src |  | HI | Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m) | 
| T14 | Mauna Kea-UH/Tholen NEO Follow-Up (CFHT) |  | HI | Mauna Kea-UH/Tholen NEO Follow-Up (CFHT) | 
| U52 | Shasta Valley Observatory |  | CA | Shasta Valley Observatory, Grenada (?) | 
| U53 | Murray Hill Observatory |  | OR | Murray Hill Observatory, Beaverton | 
| U54 | Hume Observatory |  | CA | Hume Observatory, Santa Rosa | 
| U55 | Golden Ears Observatory | .svg.png.webp) | BC | Golden Ears Observatory, Maple Ridge | 
| U56 | Palo Alto Observatory |  | CA | Palo Alto | 
| U57 | Black Mountain Observatory |  | CA | Black Mountain Observatory, Los Altos | 
| U63 | Burnt Tree Hill Observatory |  | WA | Burnt Tree Hill Observatory, Cle Elum | 
| U64 | Lind Observatory – Central Washington University (CWU) |  | WA | CWU-Lind Observatory, Ellensburg | 
| U65 | CWU Observatory |  | WA | CWU Observatory, Ellensburg | 
| U67 | Jack C. Davis Observatory |  | NV | Jack C. Davis Observatory, Carson City | 
| U68 | JPL SynTrack Robotic Telescope |  | CA | JPL SynTrack Robotic Telescope, Auberry | 
| U69 | iTelescope SRO Observatory |  | CA | iTelescope SRO Observatory, Auberry | 
| U70 | RASC Observatory |  | CA | RASC Observatory, Alder Springs | 
| U71 | AHS Observatory |  | CA | AHS Observatory, Castaic | 
| U72 | Tarzana Observatory |  | CA | Tarzana | 
| U73 | Redondo Beach |  | CA | Redondo Beach | 
| U74 | JPL SynTrack Robotic Telescope 2 |  | CA | JPL SynTrack Robotic Telescope 2, Auberry | 
| U76 | Maury Lewin Astronomical Observatory; observer: Pablo Lewin |  | CA | Glendora | 
| U77 | Rani Observatory |  | CA | Rani Observatory, San Diego | 
| U78 | Cedar Glen Observatory Src Archived 2021-11-11 at the Wayback Machine |  | CA | Cedar Glen Observatory | 
| U79 | Cosmos Research Center |  | CA | Cosmos Research Center, Encinitas | 
| U80 | DanHenge Observatory – Center for Solar System Studies (CS3); observer: Daniel Coley Src |  | CA | CS3-DanHenge Observatory, Landers | 
| U81 | Trojan Station – Center for Solar System Studies (CS3); observer: Robert D. Stephens |  | CA | CS3-Trojan Station, Landers | 
| U82 | Palmer Divide Station – Center for Solar System Studies (CS3); observer: Brian D. Warner |  | CA | CS3-Palmer Divide Station, Landers | 
| U83 | Mount Laguna Observatory, Mount Laguna |  | CA | Mount Laguna Observatory | 
| U96 | Athabasca University Geophysical Observatory Src | .svg.png.webp) | AB | Athabasca University Geophysical Observatory | 
| U97 | JPL SynTrack Robotic Telescope 3 |  | AZ | JPL SynTrack Robotic Telescope 3, Flagstaff | 
| U98 | NAC Observatory; observer: Mike Wiles |  | AZ | NAC Observatory, Benson | 
| V00 | Bok Telescope at the Kitt Peak National Observatory |  | AZ | Kitt Peak-Bok | 
| V01 | Mountainville Observatory |  | UT | Mountainville Observatory, Alpine | 
| V02 | Command Module Observatory; observer: Thomas A. Polakis |  | AZ | Command Module, Tempe | 
| V03 | Big Water Observatory |  | UT | Big Water | 
| V04 | FRoST, Anderson Mesa Station, see #688 |  | AZ | FRoST, Anderson Mesa | 
| V05 | Rusty Mountain Observatory |  | AZ | Rusty Mountain Observatory, Gold Canyon | 
| V06 | Catalina Sky Survey-Kuiper, also see #703 |  | AZ | Catalina Sky Survey-Kuiper | 
| V07 | Whipple Observatory PAIRITEL (also see #696 and #G91) |  | - | Whipple Observatory, Mount Hopkins-PAIRITEL | 
| V08 | Mountain Creek Ranch |  | AZ | Mountain Creek Ranch, Vail | 
| V09 | Moka Observatory Src |  | AZ | Moka Observatory, Benson | 
| V10 | Sierra Sinagua Observatory |  | AZ | Sierra Sinagua Observatory, Flagstaff | 
| V11 | Saguaro Observatory |  | AZ | Saguaro Observatory, Tucson | 
| V12 | Elgin Observatory |  | AZ | Elgin | 
| V13 | Little Moose Observatory |  | UT | Little Moose Observatory, Timber Lakes | 
| V14 | Moose Springs Observatory |  | UT | Moose Springs Observatory, Timber Lakes | 
| V15 | OWL-Net, Mount Lemmon Observatory |  | AZ | OWL-Net, Mt. Lemmon | 
| V16 | Crowson Observatory, Dark Sky New Mexico Src |  | NM | Dark Sky New Mexico, Animas | 
| V17 | Leo Observatory |  | AZ | Leo Observatory, Tucson | 
| V19 | Whiskey Creek Observatory |  | NM | Whiskey Creek Observatory | 
| V20 | Killer Rocks Observatory |  | NM | Killer Rocks Observatory, Pie Town | 
| V21 | Cewanee Observatory at DSNM |  | NM | Cewanee Observatory at DSNM | 
| V23 | FOAH Observatory |  | NM | FOAH Observatory, Magdalena | 
| V24 | Sonoran Desert Skies Observatory, observer: Alex Helms |  | AZ | Sonoran Desert Skies Observatory, Pearce | 
| V26 | UAS-ISON Observatory, Cosala |  | - | UAS-ISON Observatory, Cosalá | 
| V27 | North Mesa Observatory |  | NM | North Mesa Observatory, Los Alamos | 
| V28 | Deep Sky West Observatory |  | NM | Deep Sky West Observatory, Rowe | 
| V29 | Cloudcroft Observatory (Tzec Maun Cloudcroft Facility located at Cloudcroft; also see Mayhill location: #H10) |  | NM | Tzec Maun Cloudcroft Facility | 
| V30 | Heaven on Earth Observatory |  | NM | Heaven on Earth Observatory, Mayhill | 
| V31 | Hazardous Observatory |  | NM | Hazardous Observatory, Mayhill | 
| V32 | Canvas View New Mexico Skies, (at Mayhill location) |  | NM | Canvas View New Mexico Skies, Mayhill | 
| V34 | Black Forest Observatory |  | CO | Black Forest | 
| V35 | Deep Sky Observatory |  | TX | Deep Sky Observatory Collaborative, Pier 5 | 
| V36 | The Ranch Observatory, Artesia |  | NM | The Ranch Observatory, Lakewood | 
| V37 | McDonald Observatory-LCO ELP, also see #711 |  | TX | McDonald Observatory-LCO ELP | 
| V38 | McDonald Observatory-LCO ELP Aqawan A #1, also see #711 |  | TX | McDonald Observatory-LCO ELP Aqawan A #1 | 
| V39 | McDonald Observatory-LCO ELP B |  | TX | McDonald Observatory-LCO ELP B | 
| V40 | Dark Sky Observatory(!) |  | TX | Dark Sky Observatory, Fort Davis | 
| V41 | Rapid City Observatory |  | SD | Rapid City | 
| V58 | Medina Dome Observatory |  | TX | Medina Dome, Medina | 
| V59 | Millwood Observatory |  | TX | Millwood Observatory, Comfort | 
| V60 | Putnam Mountain Observatory Src |  | TX | Putman Mountain Observatory | 
| V61 | Shed of Science South Observatory |  | TX | Shed of Science South, Pontotoc | 
| V62 | Live Oak Observatory |  | TX | Live Oak Observatory, Pontotoc | 
| V63 | Tara Observatory |  | TX | Tara Observatory, Cherokee | 
| V70 | Starry Night Observatory |  | TX | Starry Night Observatory, Columbus | 
| V72 | Omaha Observatory |  | NE | Omaha | 
| V74 | Katy Observatory |  | TX | Katy Observatory, Katy | 
| V78 | Spirit Marsh Observatory |  | MN | Spirit Marsh Observatory. Sauk Centre | 
| V81 | Fayetteville Observatory |  | NC | Fayetteville | 
| V83 | Rolling Hills Observatory |  | MO | Rolling Hills Observatory, Warrensburg | 
| V86 | Rattle Snake Observatory |  | MO | Rattle Snake Observatory, Sedalia | 
| V88 | River Ridge Observatory |  | AR | River Ridge Observatory, Conway | 
| V93 | Pin Oak Observatory, Fort Madison |  | IA | Pin Oak Observatory, Fort Madison | 
| V94 | Cherokeeridge Observatory |  | IA | Cherokeeridge Observatory, Fort Madison | 
| W04 | Mark Evans Observatory |  | IL | Mark Evans Observatory, Bloomington | 
| W08 | Jimginny Observatory |  | IL | Jimginny Observatory, Naperville | 
| W11 | Calumet Astronomy Center |  | IN | Northwest Indiana Robotic Telescope, Lowell | 
| W14 | Harvest Observatory |  | AL | Harvest | 
| W16 | Pleasant Groves Observatory |  | AL | Pleasant Groves Observatory | 
| W19 | Kalamazoo Observatory |  | MI | Kalamazoo | 
| W23 | Hevonen Farm Observatory |  | OH | Hevonen Farm Observatory, Oxford | 
| W22 | WestRock Observatory Src |  | GA | WestRock Observatory, Columbus | 
| W25 | RMS Observatory |  | OH | RMS Observatory, Cincinnati | 
| W28 | Ex Nihilo Observatory |  | GA | Ex Nihilo Observatory, Winder | 
| W30 | Georgia College Observatory |  | GA | Georgia College Observatory, Milledgeville | 
| W31 | Deerlick Observatory |  | GA | Deerlick Observatory, Crawfordville | 
| W32 | Crawfordville Observatory |  | GA | Crawfordville Observatory | 
| W33 | Transit Dreams Observatory |  | SC | Transit Dreams Observatory, Campobello | 
| W34 | Squirrel Valley Observatory Src |  | NC | Squirrel Valley Observatory, Columbus | 
| W42 | Mind's Eye Observatory Src |  | FL | St Sebastian Preserve Sebastian, Florida Sebastian | 
| W38 | Dark Sky Observatory Src |  | NC | Dark Sky Observatory, Boone | 
| W46 | Foxfire Village Observatory, Foxfire |  | NC | Foxfire Village | 
| W49 | CBA-MM Observatory |  | WV | CBA-MM Observatory, Mountain Meadows | 
| W50 | Apex |  | NC | Apex | 
| W53 | Hagerstown Observatory |  | MD | Hagerstown | 
| W54 | Mark Slade Remote Observatory Src |  | VA | Mark Slade Remote Observatory, Wilderness | 
| W55 | Natelli Observatory |  | MD | Natelli Observatory, Frederick | 
| W61 | Leeside Observatory | .svg.png.webp) | ON | Leeside Observatory, Elgin | 
| W62 | Comet Hunter Observatory 2 |  | PA | Comet Hunter Observatory2, New Ringgold | 
| W63 | Astronomical Observatory Technological University Of Pereira (Observatorio Astronómico De la Universidad Tecnológica De Pereira) |  | Risaralda | Observatorio Astronomico UTP, Pereira | 
| W65 | GOZ Observatory (Observatoire GOZ), Montpellier | .svg.png.webp) | QBC | Observatoire GOZ, Montpellier | 
| W66 | SVH Observatory |  | NJ | SVH Observatory, Blairstown | 
| W67 | Paul Robinson Observatory |  | NJ | Paul Robinson Observatory, Voorhees State Park | 
| W68 | ATLAS-CHL |  | IV | El Sauce Observatory, Rio Hurtado | 
| W70 | Loose Goose Observatory | .svg.png.webp) | QC | Loose Goose Observatory, Saint-Jérôme | 
| W71 | Rand II Observatory |  | NY | Rand II Observatory, Lake Placid | 
| W72 | Trumbull Observatory |  | CT | Trumbull Observatory, Trumbull | 
| W73 | Moquegua Observatory (Observatorio Astronomico de Moquegua) |  | - | Observatorio Astronomico de Moquegua, Carumas | 
| W74 | Danish National Telescope, ESO-La Silla Observatory |  | - | Danish Telescope, La Silla | 
| W75 | SPECULOOS-South Observatory, Paranal |  | Af | SPECULOOS-South Observatory, Paranal | 
| W76 | CHILESCOPE Observatory, Río Hurtado |  | Co | CHILESCOPE Observatory, Rio Hurtad | 
| W77 | Skyledge Observatory |  | CT | Skyledge Observatory, Killingworth | 
| W78 | Clay Telescope |  | MA | Clay Telescope, Harvard University | 
| W79 | Cerro Tololo-LCO Aqawan B #1, see #807 |  | Co | Cerro Tololo-LCO Aqawan B #1 | 
| W80 | Westwood Observatory |  | MA | Westwood | 
| W81 | Nebula Knoll Observatoy |  | NH | Nebula Knoll Observatoy, East Wakefield | 
| W82 | Mendel Observatory |  | MA | Mendel Observatory, Merrimack College | 
| W83 | Whitin Observatory |  | MA | Whitin Observatory, Wellesley | 
| W84 | Cerro Tololo-Dark Energy Camera (DECam) of The Dark Energy Survey, also see #807 |  | Co | Cerro Tololo-DECam | 
| W85 | Cerro Tololo-LCO A, at #807 |  | Co | Cerro Tololo-LCO A | 
| W86 | Cerro Tololo-LCO B, at #807 |  | Co | Cerro Tololo-LCO B | 
| W87 | Cerro Tololo-LCO C, at #807 |  | Co | Cerro Tololo-LCO C | 
| W88 | Slooh (Slooh.com) |  | Co | Slooh.com Chile Observatory, La Dehesa | 
| W89 | Cerro Tololo-LCO Aqawan A #1, at #807 |  | Co | Cerro Tololo-LCO Aqawan A #1 | 
| W90 | Phillips Exeter Academy Grainger Observatory |  | NH | Phillips Exeter Academy Grainger Observatory | 
| W91 | VHS-VISTA, Cerro Paranal |  | - | VHS-VISTA, Cerro Paranal | 
| W92 | MASTER-OAFA Observatory |  | J | MASTER-OAFA Observatory, San Juan | 
| W93 | Korea Microlensing Telescope Network-CTIO |  | Af | Korea Microlensing Telescope Network-CTIO | 
| W94 | AMACS1, San Pedro de Atacama |  | Af | AMACS1, San Pedro de Atacama | 
| W95 | Panamanian Observatory (Observatorio Panameño en San Pedro de Atacama) |  | Af | Observatorio Panameno, San Pedro de Atacama | 
| W96 | CAO (since 2013) |  | Af | CAO, San Pedro de Atacama (since 2013) | 
| W97 | Atacama Desert Observatory |  | Af | Atacama Desert Observatory, San Pedro de Atacama | 
| W98 | Polonia Observatory |  | Af | Polonia Observatory, San Pedro de Atacama | 
| W99 | Atacama Desert Observatory |  | Af | SON, San Pedro de Atacama Station | 
| X00 | Tolar Observatory (Observatorio Astronomico Tolar) |  | - | Observatorio Astronomico Tolar | 
| X01 | Hurtado Observatory |  | - | Observatory Hurtado, | 
| X02 | Telescope Live Observatory |  | - | Telescope Live, El Sauce | 
| X03 | SADR Observatory (Observatoire SADR) |  | - | Observatoire SADR, Poroto | 
| X04 | MCD Observatory, Saint-Anaclet | .svg.png.webp) | QC | |
| X05 | Simonyi Survey Telescope, Vera C. Rubin Observatory |  | Vera C. Rubin Observatory | |
| X12 | Los Cabezones Observatory (Observatorio Los Cabezones) |  | - | Observatorio Los Cabezones | 
| X13 | Bosque Alegre Observatory (Observatorio Remoto Bosque Alegre; Estación Astrofísica de Bosque Alegre, Observatorio Astronómico de Córdoba) |  | Cór | Observatorio Remoto Bosque Alegre | 
| X14 | Orbis Tertius Observatory (Observatorio Orbis Tertius) |  | Cór | Observatorio Orbis Tertius, Córdoba | 
| X31 | Galileo Galilei Observatory (Oro Verde Observatory; Observatorio Astronómico de Oro Verde) |  | E | Galileo Galilei Observatory, Oro Verde | 
| X38 | Pueyrredon Observatory (Observatorio Pueyrredon) |  | BA | Observatorio Pueyrredon, La Lonja | 
| X39 | Antares Observatory (Observatorio Antares), also see U.S. observatory #H55 |  | BA | Observatorio Antares, Pilar | 
| X50 | Montevideo Astronomical Observatory (Observatorio Astronomico de Montevideo) |  | - | Observatorio Astronomico de Montevideo | 
| X57 | CMF Observatory (Polo Astronômico Casimiro Montenegro Filho) and planetarium Src |  | PR | Polo Astronomico CMF, Foz do Iguaçu | 
| X70 | OATU Observatory (Observatorio OATU) |  | SP | Observatorio OATU, Tupi Paulista | 
| X74 | Campo dos Amarais Observatory |  | SP | Observatorio Campo dos Amarais | 
| X87 | Dogsheaven Observatory |  | DF | Dogsheaven Observatory, Brasilia | 
| X88 | Adhara Observatory (Observatório Adhara) |  | SP | Observatorio Adhara, Sorocaba | 
| X89 | Rocca Observatory |  | DF | Rocca Observatory, Brasilia | 
| X90 | Carina Observatory |  | DF | Carina Observatory, Brasilia | 
| Y00 | SONEAR Observatory (SONEAR Observatory), Southern Observatory for Near Earth Asteroids Research (Src) |  | MG | SONEAR Observatory, Oliveira | 
| Y16 | ROCG Observatory |  | - | ROCG, Campos dos Goytacazes | 
| Y28 | OASI Observatory, Itacuruba |  | PE | OASI, Nova Itacuruba | 
| Y40 | Discovery Observatory |  | - | Discovery Observatory, Caruaru | 
| Y65 | Two-meter Twin Telescope, TTT1, Tenerife |  | CN | Two-meter Twin Telescope, TTT1, Teide | 
| Y66 | Two-meter Twin Telescope, TTT2, Tenerife |  | CN | Two-meter Twin Telescope, TTT2, Teide | 
| Z02 | HAO observatory (at Oukaïmeden Observatory) |  | - | HAO observatory, Oukaimeden | 
| Z03 | Rio Cofio Observatory |  | MD | Rio Cofio, Robledo de Chavela | 
| Z05 | Horus Observatory (Observatorio Horus) |  | - | Observatorio Horus, Cártama | 
| Z06 | Marina Sky Observatory |  | Cas | Marina Sky, Nerpio | 
| Z07 | Ad Astra Sangos Observatory |  | AN | Ad Astra Sangos Observatory, Alhendin | 
| Z08 | Telescope Live |  | AN | Telescope Live, Oria | 
| Z09 | Old Orchard Observatory |  | ENG | Old Orchard Observatory, Fiddington | 
| Z10 | PGC Observatory, Fregenal de la Sierra |  | Ext | PGC, Fregenal de la Sierra | 
| Z11 | Appledorne Observatory |  | ENG | Appledorne Observatory, Farnsfield | 
| Z12 | La Romaneta Observatory, Monòver |  | Val | La Romaneta, Monovar | 
| Z13 | AGP GUAM 4 Observatory (Observatorio AGP GUAM 4), Málaga |  | - | Observatorio AGP GUAM 4, Malaga | 
| Z14 | ART Observatory |  | Ext | ART, Fregenal de la Sierra | 
| Z15 | Southwater Observatory |  | ENG | Southwater | 
| Z16 | Cartagena Astronomical Association Observatory (Asociacion Astronomica de Cartagena) |  | Murcia | Asociacion Astronomica de Cartagena | 
| Z17 | Tenerife-LCO Aqawan A #2 |  | CN | Tenerife-LCO Aqawan A #2 | 
| Z18 | Gran Telescopio Canarias (GranTeCan or GTC; Great Canary Telescope), at Roque de los Muchachos Observatory |  | CN | Gran Telescopio Canarias, Roque de los Muchachos | 
| Z19 | Galileo National Telescope (Telescopio Nazionale Galileo; TNG) |  | CN | La Palma-TNG | 
| Z20 | Mercator Telescope |  | CN | La Palma-MERCATOR | 
| Z21 | Tenerife-LCO Aqawan A #1 |  | CN | Tenerife-LCO Aqawan A #1 | 
| Z22 | MASTER-IAC Observatory |  | CN | MASTER-IAC Observatory, Tenerife | 
| Z23 | Nordic Optical Telescope at Roque de los Muchachos Observatory |  | Can | Nordic Optical Telescope, La Palma | 
| Z24 | Tenerife Observatory-LCO B |  | CN | Tenerife Observatory-LCO B, Tenerife | 
| Z25 | Artemis Observatory |  | Canary Islands | Artemis Observatory, Teide | 
| Z26 | Arcangel Observatory (Observatorio Astronomico Arcangel) |  | - | Observatorio Astronomico Arcangel, Las Zocas | 
| Z27 | Coralito Observatory (Observatorio Coralito) |  | - | Observatorio Coralito, La Laguna | 
| Z28 | Northern Skygems Observatory |  | CLM | Northern Skygems Observatory, Nerpio | 
| Z29 | Sobradillo Observatory |  | CL | Observatorio Astronomico Sobradillo | 
| Z30 | Glyn Marsh Observatory |  | IM | Glyn Marsh Observatory, Douglas | 
| Z31 | Tenerife Observatory-LCO A |  | CN | Tenerife Observatory-LCO A, Tenerife | 
| Z32 | Javalambre Observatory, Gúdar-Javalambre |  | - | Observatorio Astrofisico de Javalambre | 
| Z33 | 6ROADS Observatory 2 |  | CM | 6ROADS Observatory 2, Nerpio | 
| Z34 | NNHS Drummonds Observatory |  | ENG | NNHS Drummonds Observatory | 
| Z35 | OAO University of Valencia Observatory at Aras de los Olmos |  | V | OAO University of Valencia Observatory at Aras de los Olmos | 
| Z36 | Cancelada Observatory |  | AN | Cancelada | 
| Z37 | Northolt Branch Observatory 3 |  | ENG | Northolt Branch Observatory 3, Blandford Forum | 
| Z38 | Picoto Observatory |  | - | Picoto Observatory, Leiria | 
| Z39 | Costa Teguise Observatory (Observatorio Costa Teguise) |  | - | Observatorio Costa Teguise | 
| Z40 | El Manzanillo Observatory |  | AN | El Manzanillo Observatory, Puerto de la Torre | 
| Z41 | Irydeo Observatory Src |  | MD | Irydeo Observatory, Camarma de Esteruelas | 
| Z42 | Rushay Farm Observatory |  | ENG | Rushay Farm Observatory, Sturminster Newton | 
| Z43 | Landéhen Observatory |  | Brittany | Landéhen | 
| Z44 | Terminus Observatory (Observatorio Terminus) |  | GA | Observatorio Terminus, A Coruña | 
| Z45 | Cosmos Observatory |  | AN | Cosmos Observatory, Marbella | 
| Z46 | Cardiff Observatory |  | WLS | Cardiff | 
| Z47 | Runcorn Observatory |  | ENG | Runcorn | 
| Z48 | Northolt Branch Observatory 2 |  | ENG | Northolt Branch Observatory 2, Shepherd's Bush | 
| Z49 | Alston Observatory, Longridge |  | ENG | Alston Observatory | 
| Z50 | Mazariegos Observatory |  | CL | Mazariegos | 
| Z51 | Anunaki Observatory |  | MD | Anunaki Observatory, Rivas-Vaciamadrid | 
| Z52 | The Studios Observatory |  | ENG | The Studios Observatory, Grantham | 
| Z53 | TRAPPIST–North, at Oukaïmden Observatory (#J43) |  | - | TRAPPIST-North, Oukaïmeden | 
| Z54 | Greenmoor Observatory |  | ENG | Greenmoor Observatory, Woodcote | 
| Z55 | Uraniborg Observatory, Ecija Sevilla Src |  | - | Uraniborg Observatory, Ecija | 
| Z56 | Knocknaboola Observatory |  | - | Knocknaboola | 
| Z57 | Zuben Observatory (Observatorio Zuben) |  | - | Observatorio Zuben, Alhaurín de la Torre | 
| Z58 | ESA Cebreros TBT Observatory |  | - | ESA Cebreros TBT Observatory, Cebreros | 
| Z59 | Chelford Observatory |  | - | Chelford Observatory | 
| Z60 | Zaldibia Observatory (Observatorio Zaldibia) |  | - | Observatorio Zaldibia | 
| Z61 | Montecanal Observatory |  | - | Montecanal Observatory, Zaragoza | 
| Z62 | Forcarei Observatory (Observatorio Forcarei) |  | - | Observatorio Forcarei | 
| Z63 | skybor Observatory |  | - | Skybor Observatory, Borja | 
| Z64 | Miron del Cielo Observatory (Observatorio el Miron del Cielo) |  | - | Observatorio el Miron del Cielo | 
| Z65 | Corgas Observatory (Observatorio Astronómico Corgas) Src Archived 2019-01-19 at the Wayback Machine |  | GA | Observatorio Astronomico Corgas | 
| Z66 | Deimos Sky Survey (DeSS) Src Archived 2019-03-29 at the Wayback Machine |  | CM | DeSS Deimos Sky Survey, Niefla Mountain | 
| Z67 | Dunboyne Castle Observatory Src |  | - | Dunboyne Castle Observatory | 
| Z68 | Torreáguila Observatory (Observatorio Torreáguila) |  | Extremadura | Observatorio Torreaguila, Barbaño | 
| Z69 | Mazagon Observatory (Observatorio Mazagón Huelva; Observatorio Mazagón) Src |  | AN | Observatorio Mazagón Huelva | 
| Z70 | Ponferrada Observatory |  | CL | Ponferrada | 
| Z71 | Observatorio Norba Caesarina, Cáceres Observatorio Src |  | - | Observatorio Norba Caesarina, Aldea Moret | 
| Z72 | Cademuir Observatory |  | - | Cademuir Observatory, Dalkey | 
| Z73 | Nuevos Horizontes Observatory (Observatorio Nuevos Horizontes) |  | - | Observatorio Nuevos Horizontes, Camas | 
| Z74 | Amanecer de Arrakis Observatory, observer: Francisco Soldán |  | AN | Amanecer de Arrakis | 
| Z75 | Sirius Observatory (Observatorio Sirius) |  | - | Observatorio Sirius, Las Lomas | 
| Z76 | Carda Observatory (Observatorio Carda) |  | Asturias | Observatorio Carda, Villaviciosa | 
| Z77 | Osuna Observatory |  | AN | Osuna | 
| Z78 | Arroyo Observatory |  | - | Arroyo Observatory, Arroyo Hurtado | 
| Z79 | Calar Alto TNO Survey, at #493 |  | AN | Calar Alto TNO Survey | 
| Z80 | Northolt Branch Observatory |  | ENG | Northolt Branch Observatory | 
| Z81 | Estrella de Mar Observatory (Observatorio Estrella de Mar) |  | - | Observatorio Estrella de Mar | 
| Z82 | BOOTES-2 Observatory |  | - | BOOTES-2 Observatory, Algarrobo | 
| Z83 | Chicharronian 3C Observatory |  | MD | Chicharronian 3C Observatory, Tres Cantos | 
| Z84 | Calar Alto-Schmidt (see also #493) Src |  | AN | Calar Alto-Schmidt | 
| Z85 | Sierra Contraviesa Observatory (Observatorio Sierra Contraviesa) |  | - | Observatorio Sierra Contraviesa | 
| Z86 | St. Mellons Observatory |  | WLS | St. Mellons | 
| Z87 | Stanley Laver Observatory |  | ENG | Stanley Laver Observatory, Pontesbury | 
| Z88 | Fosseway Observatoy |  | ENG | Fosseway Observatoy, Stratton-on-the-Fosse | 
| Z89 | Macclesfield Observatory |  | ENG | Macclesfield | 
| Z90 | Albox Observatory |  | AN | Albox | 
| Z91 | Curdridge Observatory |  | ENG | Curdridge | 
| Z92 | West Park Observatory |  | ENG | West Park Observatory, Leeds | 
| Z93 | Observatorio Polop |  | V | Observatorio Polop, Alicante | 
| Z94 | Kempshott Observatory |  | ENG | Kempshott | 
| Z95 | Astronomía Para Todos Remote Observatory |  | - | Astronomia Para Todos Remote Observatory | 
| Z96 | Cesaraugusto Observatory (Observatorio Cesaraugusto) |  | - | Observatorio Cesaraugusto | 
| Z97 | OPERA Observatory (Observatoire OPERA) |  | - | OPERA Observatory, Saint Palais | 
| Z98 | TRZ Observatory (Observatorio TRZ) |  | V | Observatorio TRZ, Bétera | 
| Z99 | Clixby Observatory |  | ENG | Clixby Observatory, Cleethorpes | 
References
- ↑ "List Of Observatory Codes (formatted, with external links)". Minor Planet Center. Retrieved 30 September 2021.
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Hanuš, J.; Ďurech, J.; Oszkiewicz, D. A. (2016). "New and updated convex shape models of asteroids based on optical data from a large collaboration network". Astronomy and Astrophysics. 586: 22–24. arXiv:1510.07422. Bibcode:2016A&A...586A.108H. doi:10.1051/0004-6361/201527441. S2CID 119112278.
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