000-099
- 000: 格林尼治,英國,英格蘭格林尼治的皇家天文台
- 001: 克勞波羅 (Crowborough),英國,英格蘭的(Isaac Roberts)
- 002: 雷利 (Rayleigh),英格蘭,愛賽克斯辰斯福自治區, (雷利天文台)
- 003: 蒙特佩利爾 (Montpellier),法國 (Observatoire de la Babote)
- 004: 土魯斯 (Toulouse),法國 (Observatoire de Toulouse)
- 005: 默頓 (Meudon),法國 (Observatoire de Paris-Meudon)
- 006: 法布拉天文台,西班牙巴塞隆納的法布拉天文台
- 007: 巴黎,法國 (巴黎天文台)
- 008: Algiers-Bouzaréah, Algeria (CRAAG: Centre de Recherche en Astronomie, Astrophysique et Geophysique)
- 009: Berne-Uecht, Switzerland (Sternwarte Uecht, Solar Observatory at Uecht)
- 010: Caussols, France (CERGA: Centre de recherches en géodynamique et astrométrie)
- 011: Wetzikon, Switzerland (Sternwarte Wetzikon)
- 012: Uccle, Belgium (Observatoire Royal de Belgique/Koninklijke Sterrenwacht van Belgi?)
- 013: Leiden, Netherlands (Sterrewacht Leiden)
- 014: Marseilles, France (Observatoire de Marseille)
- 015: Utrecht, Netherlands (Museum Sterrenwacht Sonnenborgh)
- 016: Besan?on, France (Observatoire de Besan?on)
- 017: Hoher List, Germany (Observatorium Hoher List)
- 018: Düsseldorf-Bilk, Germany (Sternwarte Bilk)
- 019: Neuchatel, Switzerland (Observatoire Cantonal de Neuchatel)
- 020: Nice, France (Observatoire de Nice)
- 021: Karlsruhe, Germany (Sternwarte Karlsruhe)
- 022: Pino Torinese, Italy (Osservatorio Astronomico di Torino)
- 023: Wiesbaden, Germany (Sternwarte Wiesbaden)
- 024: Heidelberg-K?nigstuhl, Germany (Landessternwarte Heidelberg-K?nigstuhl)
- 025: Stuttgart, Germany (Sternwarte Stuttgart)
- 026: Berne-Zimmerwald, Switzerland (Observatorium Zimmerwald)
- 027: Milan, Italy (Osservatorio Astronomico di Brera)
- 028: Würzburg, Germany (Sternwarte der Universit?t Würzburg)
- 029: Hamburg-Bergedorf, Germany (Hamburger Sternwarte)
- 030: Arcetri Observatory, Florence, Italy (Osservatorio Astrofisico di Arcetri)
- 031: Sonneberg, Germany (Sternwarte Sonneberg)
- 032: Jena, Germany (Astrophysikalisches Institut und Universit?ts-Sternwarte Jena)
- 033: Karl Schwarzschild Observatory, Tautenburg, Germany (Karl-Schwarzschild-Observatorium)
- 034: Monte Mario Observatory, Rome, Italy (Osservatorio Astronomico di Roma Sede di Monte Mario)
- 035: Copenhagen (Copenhagen University Observatory, K?benhavns Universitet Astronomisk Observatorium), Denmark
- 036: Castel Gandolfo, Vatican City (Specola Vaticana)
- 037: Collurania Observatory, Teramo, Italy (Osservatorio Astronomico di Collurania-Teramo)
- 038: Trieste, Italy (Osservatorio Astronomico di Trieste)
- 039: Lund, Sweden (Lunds Universitet Institutionen f?r astronomi, Lund Observatory)
- 040: Lohrmann Institute, Dresden, Germany
- 041: Innsbruck, Austria (Universit?ts-Sternwarte Innsbruck)
- 042: Potsdam, Germany (Einstein Tower)
- 043: Asiago Astrophysical Observatory, Padua, Italy (Osservatorio Astrofisico di Asiago)
- 044: Capodimonte Observatory, Naples, Italy (Osservatorio Astronomico di Capodimonte)
- 045: Vienna (since 1879), Austria (Universit?ts-Sternwarte Wien)
- 046: 克列特天文台, ?eské Budějovice, 捷克 (Hvězdárna Kle?)
- 047: Poznań, Poland (Obserwatorium Astronomiczne Uniwersytet im. Adama Mickiewicza w Poznaniu, Poznań Observatory)
- 048: 赫拉德茨-克拉洛韋, 捷克(赫拉德茨-克拉洛韋天文台)
- 049: Uppsala-Kvistaberg, Sweden (Kvistabergs Observatorium)
- 050: Stockholm (before 1931), Sweden (Stockholms observatorium)
- 051: Cape, South Africa (Royal Observatory at the Cape of Good Hope)
- 052: Stockholm-Saltsj?baden (since 1931), Sweden (Stockholms observatorium, Saltsj?baden Observatory)
- 053: Konkoly Observatory, Budapest (since 1934), Hungary (Konkoly Obszervatórium)
- 054: Brorfelde, Denmark (Brorfelde Observatoriet)
- 055: Kraków (Cracow), Poland (Kraków Observatory)
- 056: Skalnaté Pleso,斯洛伐克(岩湖天文台)
- 057: Belgrade, Serbia (Belgrade Astronomical Observatory(AOB); Астрономске опсерватори?е у Београду; Astronomske opservatorije u Beogradu)
- 058: K?nigsberg, German Empire (before 1944)
- 059: Lomnicky ?tít (Lomnicky peak, Slovakia)
- 060: Warsaw-Ostrowik, Poland (Warsaw University Observatory)
- 061: Uzhgorod, Ukraine
- 062: Turku, Finland (Iso-Heikkil? Observatory, University of Turku; Turun observatorio, Turun yliopisto)
- 063: Turku-Tuorla, Finland (Tuorla Observatory, University of Turku; Tuorlan observatorio, Turun yliopisto)
- 064: Turku-Kevola, Finland (Kevola Observatory, University of Turku; Kevolan t?htitorni, Turun yliopisto)
- 065: Traunstein, Germany
- 066: Athens, Greece (National Observatory of Athens)
- 067: Lvov University Observatory, Ukraine
- 068: Lvov Polytechnic Institute, Ukraine
- 069: Baldone, near Riga, Latvia
- 070: Vilno (before 1883), Russian Empire
- 071: Smolyan, Bulgaria (Bulgarian National Astronomical Observatory- Rozhen, Национална Астрономическа Обсерватория Рожен, a.k.a. Rozhen National Astronomical Observatory)
- 072: Scheuren Observatory, Germany
- 073: Bucharest, Romania
- 074: Boyden Observatory, Bloemfontein, South Africa
- 075: Tartu, Estonia (Tartu Observatory)
- 076: Johannesburg-Hartbeespoort, South Africa (Union Observatory Annex, Hartbeespoort)
- 077: Yale-Columbia Station, Johannesburg, South Africa (Yale-Columbia Southern Station, 1925–1951 [1])
- 078: Johannesburg, South Africa (Union Observatory)
- 079: Radcliffe Observatory, Pretoria, South Africa
- 080: Istanbul, Turkey
- 081: Leiden Station, Johannesburg, South Africa (Leiden Southern Station, Hartbeespoort)
- 082: St. P?lten , Austria
- 083: Golosseevo-Kiev, Ukraine
- 084: Pulkovo Observatory, Russia
- 085: Kiev, Ukraine
- 086: Odessa, Ukraine
- 087: Helwan, Egypt
- 088: Kottomia, Egypt
- 089: Nikolaev, Ukraine (Nikolaev Astronomical Observatory)
- 090: Mainz, Germany
- 091: Observatoire de Nurol, Aurec sur Loire, France
- 092: Torun-Piwnice, Poland (Piwnice Obserwatorium Astronomiczne; Piwnice Astronomical Observatory)
- 093: Skibotn, Norway
- 094: Crimea-Sime?s, Ukraine (Crimean Astrophysical Observatory-Simeis)
- 095: Crimea-Nauchnij, Ukraine (Crimean Astrophysical Observatory-Nauchnij)
- 096: Merate, Italy
- 097: Wise Observatory, Mitzpeh Ramon, Israel
- 098: Asiago Observatory, Cima Ekar, Italy (Stazione osservativa di Asiago Cima Ekar)
- 099: Lahti, Finland (Lahti Ursa Observatory; Lahden Ursan t?htitorni)
100-199
- 100: ?ht?ri, Finland
- 101: Kharkov, Ukraine (Astronomical Observatory of Kharkov National University, Астрономiчна обсерваторiя Харкiвського нацiонального унiверситету, a.k.a. ХАО, Харкiвська астрономiчна обсерваторiя)
- 102: Zvenigorod, Russia
- 103: Ljubljana, Slovenia
- 104: San Marcello Pistoiese, Italy (Osservatorio Astronomico della Montagna Pistoiese, Pistoia Mountains Astronomical Observatory; a.k.a. Osservatorio di Pian dei Termini, Pian dei Termini Observatory)
- 105: Moscow, Russia
- 106: ?rni Vrh Observatory, Slovenia (Observatorij ?rni Vrh)
- 107: Cavezzo, Italy (Osservatorio Astronomico "Geminiamo Montanari")
- 108: Montelupo, Italy (Osservatorio di Montelupo)
- 109: Algiers-Kouba, Algeria
- 110: Rostov, Russia
- 111: Piazzano Observatory, Florence, Italy
- 112: Pleiade Observatory, Verona, Italy
- 113: Volkssternwarte Drebach, Sch?nbrunn, Germany
- 114: Engelhardt Observatory, Zelenchukskaya Station, Russia (Kazan University Observatory (Обсерватория Казанского Университета); V. P. Engelhardt Astronomical Observatory (Астрономическая Обсерватория им. В. П. Энгельгардта))
- 115: Zelenchukskaya, Russia (Special Astrophysical Observatory(SAO); Специальная астрофизическая обсерватория (САО))
- 116: Giesing, Germany (München-Giesing)
- 117: Sendling, Munich, Germany
- 118: Astronomical and Geophysical Observatory, Modra, Slovakia (Astronomické observatórium Modra, Modra Observatory)
- 119: Abastuman, Georgia
- 120: Vi?njan Observatory, Croatia (Zvjezdarnica Vi?njan)
- 121: Kharkov University, Chuguevskaya Station, Ukraine
- 122: Pises Observatory, France (Observatoire des Pises)
- 123: 布拉堪天文台,布拉堪, 亞美尼亞
- 124: Castres, France (Observatoire de Castres)
- 125: Tbilisi, Georgia
- 126: Monte Viseggi, Italy (Osservatorio Astronomico di Monte Viseggi)
- 127: Bornheim, Germany
- 128: Saratov, Russia
- 129: Ordubad, Azerbaijan
- 130: 盧梅扎內(Lumezzane) (Osservatorio Astronomico "Serafino Zani", 盧梅扎內, 義大利)
- 131: Observatoire de l'Ardèche, France
- 132: Bédoin, France (Observatoire de Bédoin)
- 133: Les Tardieux, France
- 134: Groszschwabhausen
- 135: Kasan, Russia
- 136: Engelhardt Observatory, Kasan, Russia (Kazan University Observatory (Обсерватория Казанского Университета); V. P. Engelhardt Astronomical Observatory (Астрономическая Обсерватория им. В. П. Энгельгардта))
- 137: Givatayim Observatory, Israel
- 138: Village-Neuf, France
- 139: Antibes, France
- 140: Augerolles, France
- 141: Hottviller, France (Observatoire de Hottviller)
- 142: Sinsen, Germany
- 143: Gnosca, Switzerland (Osservatorio Astronomico di Gnosca)
- 144: Bray et Lu, France
- 145: 's-Gravenwezel, Belgium
- 146: Frignano, Italy
- 147: Osservatorio Astronomico "Galileo Galilei"di Suno, Italy [2]
- 148: Guitalens, France (Observatoire de Guitalens)
- 149: Beine-Nauroy, France
- 150: Maisons Laffitte, France
- 151: Eschenberg Observatory, Winterthur, Switzerland (Sternwarte Eschenberg)
- 152: Moletai Astronomical Observatory, Lithuania (MAO; Mol?t? astronomijos observatorija)
- 153: Stuttgart-Hoffeld, Germany
- 154: Cortina, Italy (Cortina d'Ampezzo, Associazione Astronomica Cortina: Osservatorio Astronomico del Col Drusciè "Helmut Ullrich")
- 155: Ole Romer Observatory, Aarhus
- 156: Catania Astrophysical Observatory, Sicily, Italy
- 157: Frasso Sabino (Osservatorio Astronomico Virginio Cesarini - Frasso Sabino, Italy)
- 158: Promiod (Osservatorio Dalai Lama di Promiod, Italy)
- 159: Monte Agliale (Osservatorio Astronomico di Monte Agliale, Italy)
- 160: Castelmartini, Italy
- 161: Cerrina Tololo Observatory, Italy
- 162: Potenza, Italy
- 163: Roeser Observatory, Luxembourg
- 164: St. Michel sur Meurthe, France
- 165: Piera Observatory, Barcelona, Spain (Observatori Astronomic de Piera)
- 166: úpice, Czech Republic (Hvězdárna v úpici)
- 167: Bülach Observatory, Switzerland
- 168: Kourovskaya, Russia
- 169: Airali Observatory, Italy
- 170: Observatorio de Begues, Spain
- 171: Flarestar Observatory, San Gwann, Malta
- 172: Onnens, Switzerland
- 173: St. Clotilde, Réunion, France (Observatoire Sainte-Clotilde)
- 174: Nyr?l? Observatory, Jyv?skyl?, Finland (Nyr?l?n observatorio)
- 175: F.-X. Bagnoud Observatory, St-Luc, Switzerland (Bagnoud Observatory)
- 176: Observatorio Astronómico de Consell (Consell Observatory, Majorca, Spain)
- 177: Le Cres, France
- 178: Collonges, France
- 179: Monte Generoso, Switzerland
- 180: Mauguio, France
- 181: Observatoire des Makes, Saint-Louis, Réunion, France
- 182: St. Paul, Réunion, France
- 183: Starlab Observatory, Karachay-Cherkessia, Russia
- 184: Valmeca Observatory, Puimichel, France
- 185: Observatoire Astronomique Jurassien-Vicques, Switzerland
- 186: Kitab, Mt. Maydanak, Uzbekistan
- 187: Borowiec Astrogeodynamic Observatory, Borowiec, Poland
- 188: Majdanak, Uzbekistan
- 189: Geneva (before 1967), Switzerland
- 190: Gissar, Tajikistan
- 191: Dushanbe, Tajikistan
- 192: Tashkent, Uzbekistan
- 193: Sanglok, Tajikistan
- 194: Tivoli, Namibia
- 195: Untermenzing Observatory, Munich, Germany
- 196: Homburg-Erbach, Germany
- 197: Bastia, Italy
- 198: Wildberg (Observatorium Wildberg, Germany) [3]
- 199: Buthiers (Observatoire de Buthiers, France)
200-299
- 200: Beersel Hills Observatory
- 201: Jonathan B. Postel Observatory, Bareggio, Italy
- 202: Tamaris Observatoire, La Seyne sur Mer
- 203: GiaGa Observatory
- 204: Schiaparelli Observatory
- 205: Obs. Casalecchio di Reno, Bologna
- 206: Haagaar Observatory, Eina
- 207: Osservatorio Antonio Grosso
- 208: Rivalta
- 209: Asiago Observatory, Cima Ekar-ADAS (Asiago-DLR Asteroid Survey)
- 210: Alma-Ata
- 211: Scandicci
- 212: Observatorio La Dehesilla
- 213: Observatorio Montcabre
- 214: Garching Observatory
- 215: Buchloe
- 216: Observatoire des C?tes de Meuse, France
- 217: Assah
- 218: Hyderabad
- 219: Japal-Rangapur
- 220: Vainu Bappu Observatory, Kavalur, India
- 221: IAS Observatory, Hakos
- 222: Yerres-Canotiers
- 223: Madras, India (Indian Institute of Astrophysics, Madras Observatory)
- 224: Ottmarsheim
- 225: Northwood Ridge Observatory
- 226: Guido Ruggieri Observatory, Padua
- 227: OrbitJet Observatory, Colden
- 228: Bruno Zugna Observatory, Trieste
- 229: G. C. Gloriosi Astronomical Observatory, Salerno
- 230: Mt. Wendelstein Observatory
- 231: Vesqueville
- 232: Masquefa Observatory
- 233: Sauro Donati Astronomical Observatory, San Vito
- 234: Coddenham Observatory
- 235: CAST Observatory, Talmassons
- 236: Tomsk
- 237: Baugy
- 238: Grorudalen Optical Observatory
- 239: Michael Adrian Observatory, Trebur
- 240: Herrenberg Sternwarte
- 241: Schaerding
- 242: Varennes
- 243: Umbrella Observatory
- 244: Geocentric Occultation Observation
- 245: Spitzer Space Telescope
- 246: Kle? Observatory-KLENOT
- 247: Roving Observer
- 248: Hipparcos
- 249: SOHO
- 250: Hubble Space Telescope
- 251: Arecibo Observatory
- 252: Deep Space Communications Complex
- 253: Deep Space Communications Complex
- 254: Haystack, Westford
- 255: Evpatoria, Ukraine
- 256: Green Bank Telescope
- 257: Goldstone DSS 25, Fort Irwin
- 260: 賽丁泉天文台-DSS (數位巡天)
- 261: 帕洛瑪山天文台-DSS
- 262: 歐洲南天天文台,拉西拉-DSS (拉西拉天文台)
- 285: Flammarion Observatory, Juvisy
- 286: 雲南天文台
- 290: Mt. Graham-VATT (Vatican Advanced Technology Telescope)
- 291: LPL/Spacewatch II
- 292: Burlington, New Jersey
- 293: Burlington remote site
- 294: Astrophysical Obs., College of Staten Island
- 295: Catholic University Observatory, Washington
- 296: Dudley Observatory (after 1893)
- 297: Middlebury
- 298: Van Vleck Observatory
- 299: Bosscha Observatory, Lembang, Indonesia
300-399
- 300: Bisei Spaceguard Center-BATTeRS
- 301: Mont Mégantic (Observatoire du Mont Mégantic, QC)
- 302: University of the Andes station
- 303: Mérida (Observatorio Astronómico Nacional de Llano del Hato, Mérida, Venezuela)
- 304: Las Campanas Observatory
- 305: Purple Mountain, Hainan Island station
- 306: Observatorio Taya Beixo, Barquisimeto
- 309: Cerro Paranal (Paranal Observatory)
- 312: Tsingtao field station, Xisha Islands
- 318: Quinns Rock
- 319: 伯斯天文台,伯斯-羅威爾望遠鏡
- 320: Chiro Observatory
- 321: Craigie
- 322: 伯斯天文台,Bickley-MCT
- 323: 伯斯天文台,Bickley
- 324: 北京天文台,沙河站
- 327: 北京天文台,興隆站 (Xinglong Station (NAOC))
- 330: 紫金山天文台,南京
- 333: Desert Eagle Observatory, Arizona
- 334: Tsingtao
- 337: Sheshan, formerly Z?-Sé
- 340: Toyonaka
- 341: Akashina
- 342: Shishikui
- 343: Younchun
- 344: Bohyunsan Optical Astronomy Observatory (BOAO)
- 345: Sobaeksan Optical Astronomy Observatory
- 346: KNUE Astronomical Observatory
- 347: Utsunomiya-Imaizumi
- 348: Ayabe
- 349: Ageo
- 350: Kurohone
- 351: Sakamoto
- 352: Konan
- 353: Nishi Kobe
- 354: Kawachi
- 355: Hadano
- 356: Kogota
- 357: Shimotsuma
- 358: Nanyo
- 359: Wakayama
- 360: Kuma Kogen
- 361: Sumoto
- 362: Ray Observatory
- 363: Yamada
- 364: YCPM Kagoshima Station
- 365: Uto Observatory
- 366: Miyasaka Observatory
- 367: Yatsuka
- 368: Ochiai
- 369: Chichibu
- 370: Kochi
- 371: Tokyo-Okayama (Okayama Astrophysical Observatoryof Tokyo Observatory) (OAO)
- 372: Geisei Observatory
- 373: Oishi
- 374: Minami-Oda Observatory
- 375: Uzurano
- 376: Uenohara
- 377: Kwasan Observatory, Kyoto University, Kyoto (Kwasan and Hida Observatories)
- 378: Murou
- 379: Hamamatsu-Yuto
- 380: Ishiki
- 381: Tokyo-Kiso (Kiso Observatory, University of Tokyo, Nagano)
- 382: Tokyo-Norikura (Norikura Observatoryof Tokyo Astronomical Observatory)
- 383: Chirorin
- 384: Shimada
- 385: Nihondaira Observatory
- 386: Yatsugatake-Kobuchizawa
- 387: Tokyo-Dodaira (Dodaira Observatoryof Tokyo Astronomical Observatory)
- 388: Tokyo-Mitaka (National Astronomical Observatory, Mitaka, Tokyo)
- 389: Tokyo (before 1938) (Tokyo Astronomical Observatory)
- 390: Utsunomiya
- 391: Sendai Observatory, Ayashi Station
- 392: JCPM Sapporo Station
- 393: JCPM Sakura Station
- 394: JCPM Hamatonbetsu Station
- 395: Tokyo-Asahikawa
- 396: Asahikawa
- 397: Sapporo Science Center
- 398: Nagatoro
- 399: Kushiro
400-499
- 400: Kitami
- 401: Oosato
- 402: Dynic Astronomical Observatory
- 403: Kani
- 404: Yamamoto
- 405: Kamihoriguchi
- 406: Bibai
- 407: Kahoku
- 408: Nyukasa
- 409: Kiyose and Mizuho
- 410: Sengamine (Sengamine Observatory, Hyōgo, Japan)
- 411: Oizumi Observatory
- 412: Iwaki
- 413: Siding Spring Observatory
- 414: Mount Stromlo
- 415: Kambah, near Canberra (Kambah Observatory)
- 416: Barton, near Canberra
- 417: Yanagida Astronomical Observatory
- 418: Tamworth
- 419: Windsor
- 420: Sydney
- 421: Mt. Kajigamori, Otoyo
- 422: Loomberah
- 423: North Ryde
- 424: Macquarie, near Canberra
- 425: Taylor Range Observatory, Brisbane
- 426: Woomera
- 427: Stockport
- 428: Reedy Creek
- 429: Hawker
- 430: Rainbow Observatory, near Coonabarabran
- 431: Mt. Tarana Observatory, Bathurst
- 432: Boambee
- 433: Bagnall Beach Observatory
- 434: S. Benedetto Po
- 435: G. Colombo Astronomical Observatory, Padua
- 436: Osservatorio di Livergnano
- 437: Haverford
- 438: Smith College Observatory, Northampton
- 439: ROTSE-III, Los Alamos
- 440: Elginfield Observatory
- 441: Swilken Brae, St. Andrews
- 442: Gualba Observatory
- 443: Obs. Astronomico Plomer, Buenos Aires
- 444: Star Cruiser Observatory
- 445: Observatori d'Ontinyent
- 446: Kingsnake Observatory
- 447: Centennial Observatory
- 448: Desert Moon Observatory, Las Cruces, New Mexico
- 449: Griffin Hunter Observatory
- 450: Carla Jane Observatory, Charlotte
- 451: West Skies Observatory, Mulvane
- 452: Big Cypress Observatory
- 453: Edwards Raven Observatory
- 454: Maryland Space Grant Consortium Observatory
- 455: CBA Concord
- 456: Daventry Observatory
- 457: Partizanske
- 458: Guadarrama Observatory
- 459: Smith River Observatory, Danbury
- 460: Area 52 Observatory, Nashville
- 461: University of Szeged, Piszkéstet? Stn. (Konkoly)
- 462: Mount Belleview Observatory
- 463: Sommers-Bausch Observatory, Boulder
- 464: Toby Point Observatory, Narragansett
- 465: Takapuna
- 466: Mount Molehill Observatory, Auckland
- 467: Auckland Observatory (Stardome Observatory)
- 468: Astronomical Observatory, Campo Catino (Osservatorio Astronomico Campo Catino)
- 469: Courroux
- 470: Ceccano
- 471: Houstrup
- 472: Merlette
- 473: Remanzacco
- 474: Mount John Observatory, Lake Tekapo (Mount John University Observatory)
- 475: Turin Observatory (before 1913)
- 476: Grange Observatory, Bussoleno, Italy
- 477: Galleywood
- 478: Lamalou-les-Bains
- 479: Sollies-Pont
- 480: Cockfield
- 481: Moorwarfen
- 482: St. Andrews
- 483: Carter Observatory, Black Birch Station
- 484: Happy Valley, Wellington
- 485: Carter Observatory, Wellington
- 486: Palmerston North
- 487: Macnairston Observatory
- 488: Newcastle-upon-Tyne
- 489: Hemingford Abbots
- 490: Wimborne Minster
- 491: Centro Astronómico de Yebes, Spain
- 492: Mickleover
- 493: 卡拉阿托天文台
- 494: Stakenbridge
- 495: Altrincham
- 496: Bishopstoke
- 497: Ascot-Loudwater
- 498: Earls Barton
- 499: Cheam
500-599
- 500: Geocentric
- 501: Herstmonceux
- 502: Colchester
- 503: Cambridge
- 504: Le Creusot, France
- 505: Simon Stevin
- 506: Bendestorf
- 507: Nyenheim
- 508: Zeist
- 509: La Seyne sur Mer
- 510: Siegen
- 511: Observatoire de Haute-Provence, France
- 512: Leiden (before 1860)
- 513: Lyons
- 514: Mundenheim (1907-1913)
- 515: Volkssternwarte Dhaun, near Kirn
- 516: Hamburg (before 1909), German Empire
- 517: Geneva (from 1967), Switzerland
- 518: Marine Observatory, Hamburg
- 519: Meschede
- 520: Bonn
- 521: Bamberg
- 522: Observatory of Strasbourg (Observatoire de Strasbourg)
- 523: Frankfurt
- 524: Mannheim
- 525: Marburg
- 526: Kiel
- 527: Altona
- 528: G?ttingen
- 529: Christiania
- 530: Lübeck
- 531: Collegio Romano, Rome (Osservatorio del Collegio Romano)
- 532: Munich, Germany (Universit?ts-Sternwarte München, Bogenhausener Sternwarte; a.k.a. K?niglichen Sternwarte zu Bogenhausen)
- 533: Padua
- 534: Leipzig (since 1861)
- 535: Palermo (Osservatorio Astronomico di Palermo "Giuseppe S. Vaiana", Sicily)
- 536: Berlin-Babelsberg (Berlin Observatoryafter 1913)
- 537: Urania Observatory, Berlin (Urania Sternwarte)
- 538: Pola, Croatia (Kaiserlichen und Koniglichen Kriegsmarine Pola Sternwarte; Austro-Hungarian Imperial [and Royal] Naval Observatory in Pola, now Pula, Croatia)
- 539: Kremsmünster
- 540: Linz (Davidschlag Observatory; Private Observatory Meyer/Obermair; Sternwarte Davidschlag, Austria)
- 541: Prague Observatory
- 542: Falkensee
- 543: Leipzig (before 1861), German Empire
- 544: Wilhelm Foerster Observatory, Berlin (Wilhelm-Foerster-Sternwarte)
- 545: Vienna Observatory (before 1879), Austria-Hungary
- 546: Oppolzer Observatory, Vienna
- 547: Breslau
- 548: Berlin (1835-1913) (Berliner Sternwarte, Berlin Observatory, before 1913)
- 549: Uppsala (Uppsala Astronomical Observatory(UAO); Astronomiska observatoriet i Uppsala)
- 550: Schwerin
- 551: Hurbanovo, formerly O'Gyalla
- 552: Osservatorio S. Vittore, Bologna (Osservatorio San Vittore, Italy)
- 553: Chorzów
- 554: Burgsolms Observatory, Wetzlar
- 555: Cracow-Fort Ska?a
- 556: Reintal, near Munich
- 557: 奧德熱幽夫天文台 (Observato? Ond?ejov, 捷克)
- 558: Warsaw
- 559: Serra La Nave
- 560: Madonna di Dossobuono (Osservatorio Madonna di Dossobuono, Italy)
- 561: Piszkéstet? Stn. (Konkoly) (Piszkéstet? Station, Konkoly Obszervatórium, Budapest)
- 562: Figl Observatory, Vienna
- 563: Seewalchen
- 564: Herrsching
- 565: Bassano Bresciano (Osservatorio Astronomico di Bassano Bresciano, Italy)
- 566: Haleakala-NEAT/GEODSS
- 567: Chions (Osservatorio di Chions; Chaonis Observatory, Italy)
- 568: Mauna Kea Observatory, Hawaii
- 569: Helsinki
- 570: Vilnius (since 1939)
- 571: Cavriana (Osservatorio "Giordano Bruno", Italy)
- 572: Cologne
- 573: Eldagsen
- 574: Gottolengo
- 575: La Chaux de Fonds
- 576: Burwash
- 577: Metzerlen Observatory
- 578: Linden Observatory
- 579: Novi Ligure
- 580: Graz
- 581: Sedgefield
- 582: Orwell Park
- 583: Odessa-Mayaki
- 584: Leningrad
- 585: Kiev comet station
- 586: Pic du Midi (Observatoire du Pic du Midi, France)
- 587: Sormano (Osservatorio Astronomico Sormano, Italy)
- 588: Eremo di Tizzano
- 589: Osservatorio Astrometrico Santa Lucia Stroncone
- 590: Metzerlen
- 591: Resse Observatory
- 592: Solingen, Germany
- 593: Monte Argentario
- 594: Monte Autore
- 595: Farra d'Isonzo (Osservatorio Astronomico di Farra d'Isonzo, Italy)
- 596: Colleverde di Guidonia (Osservatorio Colleverde di Guidonia, Italy)
- 597: Springe
- 598: Loiano (Osservatorio Astronomico di Loiano, Italy)
- 599: Campo Imperatore-CINEOS (Osservatorio di Campo Imperatore, Italy)
600-699
- 600: TLC Observatory, Bologna
- 601: Engelhardt Observatory, Dresden
- 602: Urania Observatory, Vienna
- 603: Bothkamp, near Kiel, Germany (Sternwarte Bothkamp, Bothkamp Observatory)
- 604: Archenhold Sternwarte, Berlin-Treptow
- 605: Marl
- 606: Norderstedt
- 607: Hagen Observatory, Ronkhausen
- 608: Haleakala-AMOS
- 609: Osservatorio Polino
- 610: Pianoro
- 611: Starkenburg Sternwarte, Heppenheim (Starkenburg Observatory)
- 612: Lenkerbeck
- 613: Heisingen
- 614: Soisy-sur-Seine
- 615: St. Véran
- 616: Brno
- 617: Arbonne-la-Forêt
- 618: Martigues
- 619: Sabadell
- 620: Observatorio Astronómico de Mallorca
- 621: Bergisch Gladbach Observatory
- 622: Oberwichtrach
- 623: Liège
- 624: Dertingen
- 625: Kihei-AMOS Remote Maui Experimental Site
- 626: Geel
- 627: Blauvac
- 628: Mülheim-Ruhr
- 629: JATE Observatory, Szeged
- 630: Osenbach
- 631: Hamburg-Georgswerder
- 632: San Polo A Mosciano
- 633: Romito
- 634: Crolles
- 635: Pergignan
- 636: Essen Observatory aka Walter Hohmann Observatory, Germany
- 637: Hamburg-Himmelsmoor
- 638: Detmold
- 639: Dresden
- 640: Senftenberger Sternwarte
- 641: Overberg
- 642: Oak Bay, Victoria
- 643: OCA-Anza Observatory
- 644: Palomar Mountain/NEAT
- 645: Apache Point-Sloan Digital Sky Survey
- 646: Santana Observatory, Rancho Cucamonga
- 647: Stone Finder Observatory, Calgary
- 648: Winer Observatory, Sonoita
- 649: Powell Observatory, Louisburg
- 650: Temecula
- 651: Grasslands Observatory, Tucson
- 652: Rock Finder Observatory, Calgary
- 653: Torus Observatory, Buckley
- 654: Table Mountain Observatory, Wrightwood-PHMC
- 655: Sooke
- 656: Victoria
- 657: Climenhaga Observatory, Victoria
- 658: National Research Council of Canada (Dominion Astrophysical Observatory)
- 659: Heron Cove Observatory, Orcas
- 660: Leuschner Observatory, Berkeley
- 661: Rothney Astrophysical Observatory, Priddis
- 662: Lick Observatory, Mount Hamilton
- 663: Red Mountain Observatory
- 664: Manastash Ridge Observatory
- 665: Wallis Observatory
- 666: Moorpark College Observatory
- 667: Wanapum Dam
- 668: San Emigdio Peak
- 669: Ojai
- 670: Camarillo
- 671: Stony Ridge
- 672: Mount Wilson
- 673: Table Mountain Observatory, Wrightwood
- 674: Ford Observatory, Wrightwood
- 675: Palomar Mountain (Palomar Observatory)
- 676: San Clemente
- 677: Lake Arrowhead
- 678: Fountain Hills (Fountain Hills Observatory, Fountain Hills, AZ)
- 679: San Pedro Martir
- 680: Los Angeles
- 681: Calgary
- 682: Kanab
- 683: Goodricke-Pigott Observatory, Tucson
- 684: Prescott (Prescott Observatory)
- 685: Williams, AZ
- 686: U. of Minn. Infrared Obs., Mt. Lemmon (Mount Lemmon)
- 687: Northern Arizona University, Flagstaff
- 688: Lowell Observatory, Anderson Mesa Station (Anderson Mesa), Flagstaff
- 689: U.S. Naval Observatory, Flagstaff (USNOFS)
- 690: Lowell Observatory, Flagstaff
- 691: Steward Observatory, Kitt Peak-Spacewatch
- 692: Steward Observatory, Tucson
- 693: Catalina Station, Tucson
- 694: Tumamoc Hill, Tucson
- 695: Kitt Peak National Observatory
- 696: Whipple Observatory, Mt. Hopkins (Fred Lawrence Whipple Observatory)
- 697: Kitt Peak, McGraw-Hill
- 698: Mt. Bigelow
- 699: Lowell Observatory-LONEOS (LONEOS)
700-799
- 700: Chinle
- 701: Junk Bond Observatory, Sierra Vista, AZ
- 702: Joint Obs. for cometary research, Socorro, NM (now the New Mexico Tech Remote Observatory)
- 703: Catalina Sky Survey, Tucson, AZ
- 704: Lincoln Laboratory ETS, New Mexico (ETS = Experimental Test System)
- 705: Apache Point (Apache Point Observatory, NM)
- 706: Salida, CO
- 707: Chamberlin field station, CO
- 708: Chamberlin Observatory, Denver, CO
- 709: W & B Observatory, Cloudcroft, NM
- 710: MPO Observatory, Florissant, CO
- 711: McDonald Observatory, Fort Davis, TX
- 712: USAF Academy Observatory, Colorado Springs, CO
- 713: Thornton, CO
- 714: Bagdad, AZ
- 715: Jornada Observatory, Las Cruces, NM
- 716: Palmer Divide Observatory, Colorado Springs, CO
- 717: Prude Ranch, TX
- 718: University of Utah, Tooele, UT
- 719: Frank T.Etscorn CampusObservatory, Socorro, NM (New Mexico Tech Astronomy Club)
- 720: Universidad de Monterrey, Nuevo León, Mexico
- 721: Lime Creek (Lime Creek Observatory, NE)
- 722: Missouri City, TX
- 723: Cottonwood Observatory, Ada, OK
- 724: National Observatory, Tacubaya (Observatorio Astronómico Nacional; Observatorio de Tacubaya, Mexico)
- 725: Fair Oaks Ranch (Fair Oaks Ranch Observatory, Fair Oaks Ranch, Texas)
- 726: Brainerd (Fire in the Sky Observatory, Brainerd, MN)
- 727: Zeno Observatory, Edmond, OK
- 728: Corpus Christi, TX
- 729: Glenlea Astronomical Observatory, Winnipeg, MB
- 730: University of North Dakota, Grand Forks, ND
- 731: Rose-Hulman Observatory, Terre Haute, IN
- 732: Oaxaca, Oaxaca, Mexico
- 733: Allen, Texas
- 734: Farpoint Observatory, Eskridge, KS
- 735: George Observatory, Needville, TX
- 736: Houston, TX
- 737: New Bullpen Observatory, Alpharetta, GA
- 738: Observatory of the State University of Missouri
- 739: Sunflower Observatory, Olathe, KS
- 740: SFA Observatory, Nacogdoches, TX (Stephen F. Austin State University Observatory)
- 741: Goodsell Observatory, Northfield, MN
- 742: Drake University, Des Moines, IA
- 743: University of Minnesota, Minneapolis, MN
- 744: Doyan Rose Observatory, Indianapolis, IN
- 745: Glasgow, Missouri
- 746: Brooks Astronomical Observatory, Mt. Pleasant, MI
- 747: Baton Rouge Observatory, LA
- 748: Van Allen Observatory, Iowa City, IA
- 749: Oakwood, GA
- 750: Hobbs Observatory, Fall Creek, WI
- 751: Lake Saint Louis, MO
- 752: Puckett Observatory, Mountain Town, GA
- 753: Washburn Observatory, Madison, WI
- 754: Yerkes Observatory, Williams Bay, WI
- 755: Optec Observatory, MI
- 756: Dearborn Observatory, Evanston, IL
- 757: High Point, NC
- 758: BCC Observatory, Cocoa, FL (Astronaut Memorial Planetarium & Observatory; BCC = Brevard Community College)
- 759: Nashville, TN
- 760: Goethe Link Observatory, Brooklyn, IN
- 761: Zephyrhills (Quail Hollow Observatory, Zephyrhills, FL)
- 762: Four Winds Observatory, Lake Leelanau, MI
- 763: King City, ON
- 764: Puckett Observatory, Stone Mountain, GA
- 765: Cincinnati, OH
- 766: Michigan State University Observatory, East Lansing, MI
- 767: Angell Hall Observatory, Ann Arbor, MI
- 768: Dearborn, MI
- 769: McMillin Observatory, Columbus, OH
- 770: Crescent Moon Observatory, Columbus, OH
- 771: Boyeros Observatory, Havana, Cuba (Observatorio de Rancho Boyeros)
- 772: Boltwood Observatory, Stittsville, ON
- 773: Warner and Swasey Observatory, Cleveland, OH
- 774: Warner and Swasey Nassau Station, Chardon, OH
- 775: Sayre Observatory, South Bethlehem, PA
- 776: Foggy Bottom, Hamilton (Foggy Bottom Observatory, Hamilton , NY)
- 777: Toronto, ON
- 778: Allegheny Observatory, Pittsburgh, PA
- 779: David Dunlap Observatory, Richmond Hill, ON
- 780: Leander McCormick Observatory, Charlottesville, VA
- 781: Quito, Ecuador
- 782: Quito, comet astrograph station
- 783: Rixeyville, VA
- 784: Stull Observatory, Alfred University, NY
- 785: Fitz-Randolph Observatory, Princeton, NJ
- 786: U.S. Naval Obs., Washington (since 1893)
- 787: U.S. Naval Obs., Washington (before 1893)
- 788: Mount Cuba Observatory, Wilmington, DE
- 789: Litchfield Observatory, Hamilton College, Clinton, Oneida County, NY
- 790: Dominion Observatory, Ottawa, ON
- 791: Flower and Cook Observatory, Philadelphia, PA
- 792: U. of Rhode Island, Quonochontaug, RI
- 793: Dudley Observatory, Albany (before 1893)
- 794: Vassar College Observatory, Poughkeepsie, NY
- 795: Rutherford, NY
- 796: Stamford, CT
- 797: Yale Observatory, New Haven, CT (Yale University Observatory)
- 798: Yale Observatory, Bethany, CT (Yale University Observatory)
- 799: Winchester, MA
800-899
- 800: Harvard Observatory, Arequipa, Peru (Boyden Station)
- 801: Oak Ridge Observatory
- 802: Harvard Observatory, Cambridge, MA (Harvard College Observatory)
- 803: Taunton
- 804: Santiago-San Bernardo
- 805: Santiago-Cerro El Roble
- 806: Santiago-Cerro Calán
- 807: Cerro Tololo Observatory, La Serena (Cerro Tololo Inter-American Observatory)
- 808: El Leoncito (became the Dr. Carlos U. Cesco Observatory (Estación de Altura Carlos Ulrico Cesco) in 1990; seems to be the same as the Observatorio Félix Aguilar, San Juan National University), Argentina
- 809: European Southern Observatory, La Silla (La Silla Observatory)
- 810: Wallace Observatory, Westford (George R. Wallace Jr. Astrophysical Observatory(WAO), Westford, MA)
- 811: Maria Mitchell Observatory, Nantucket
- 812: Vi?a del Mar
- 813: Santiago-Quinta Normal (1862-1920)
- 814: North Scituate
- 815: Santiago-Santa Lucia (1849-1861)
- 816: Rand Observatory
- 817: Sudbury (Sudbury, Massachusetts)
- 818: Gémeaux Observatory, Laval, QC (Observatoire Gémeaux)
- 819: Val-des-Bois, QC
- 820: Tarija
- 821: Córdoba-Bosque Alegre (Estación Astrofísica de Bosque Alegre, Observatorio Astronómico de Córdoba, Argentina)
- 822: Córdoba (Observatorio Astronómico de Córdoba, Argentina)
- 823: Fitchburg
- 824: Lake Clear
- 825: Granville
- 826: Plessissville, QC
- 827: Saint-Félicien, QC
- 828: Assonet
- 829: Complejo Astronómico El Leoncito (CASLEO)
- 830: Hudson
- 831: Rosemary Hill Observatory, University of Florida
- 832: Etters
- 833: Obs. Astronomico de Mercedes, Buenos Aires
- 834: Buenos Aires-AAAA
- 835: Drum Hill Station, Chelmsford
- 836: Furnace Brook Observatory, Cranston
- 837: Jupiter
- 838: Dayton
- 839: La Plata (La Plata Astronomical Observatory; Observatorio Astronómico de La Plata)
- 840: Flint
- 841: Martin Observatory, Blacksburg
- 842: Gettysburg College Observatory
- 843: Emerald Lane Observatory, Decatur
- 844: Los Molinos
- 845: Clinton B. Ford Observatory , Ithaca
- 846: Principia Astronomical Observatory, Elsah
- 847: Lunar Cafe Observatory
- 848: Tenagra Observatory, Cottage Grove
- 849: Everstar Observatory, Olathe, KS (EverStaR Observatory)
- 850: Cordell-Lorenz Observatory, Sewanee
- 851: Burke-Gaffney Observatory, Halifax
- 852: River Moss Observatory, St. Peters
- 853: Biosphere 2 Observatory
- 854: Sabino Canyon Observatory, Tucson
- 855: Wayside Observatory, Minnetonka
- 856: Riverside
- 857: Iowa Robotic Observatory, Sonoita
- 858: Tebbutt Observatory, Edgewood
- 859: Wykrota Observatory-CEAMIG (Observatório Wykrota- CEAMIG (Centro de Estudos Astron?micos de Minas Gerais))
- 860: Valinhos
- 861: Bar?o Geraldo
- 862: Saku
- 863: Furukawa
- 864: Kumamoto (KCAO (Kumamoto Civil Astronomical Observatory), Kumamoto, Kumamoto, Japan)
- 865: Emmy Observatory, New Paltz
- 866: U.S. Naval Academy, Michelson
- 867: Saji Observatory
- 868: Hidaka Observatory
- 869: Tosa
- 870: Campi?as (Observatório de Campinas, a.k.a. Observatório Municipal de Campinas "Jean Nicolini")
- 871: Akou
- 872: Tokushima
- 873: Kurashiki Observatory
- 874: Itajuba
- 875: Yorii
- 876: Honjo
- 877: Okutama
- 878: Kagiya
- 879: Tōkai (Tōkai, Aichi, Japan)
- 880: Rio de Janeiro
- 881: Toyota
- 882: JCPM Oi Station
- 883: Shizuoka (Shizuoka, Shizuoka, Japan)
- 884: Kawane
- 885: JCPM Yakiimo Station
- 886: Mishima (Mishima, Shizuoka, a.k.a. Susono, Shizuoka, Japan)
- 887: Ojima (Ojima, Gunma, Japan)
- 888: Gekko Observatory
- 889: Karasuyama (Karasuyama, Tochigi, Japan)
- 890: JCPM Tone Station
- 891: JCPM Kimachi Station
- 892: YGCO Hoshikawa and Nagano Stations
- 893: Sendai Municipal Observatory (Sendai Astronomical Observatory)
- 894: Kiyosato
- 895: Hatamae
- 896: Yatsugatake South Base Observatory (near 386 Yatsugatake-Kobuchizawa)
- 897: YGCO Chiyoda Station (YGCO: Yamaneko Group of Comet Observers)
- 898: Fujieda (Fujieda, Shizuoka, Japan)
- 899: Toma
900-999
- 900: Moriyama (Moriyama, Shiga, Japan)
- 901: Tajimi
- 902: Ootake
- 903: Fukuchiyama and Kannabe (Fukuchiyama and Kannabe Observatory, Japan)
- 904: Go-Chome and Kobe-Suma
- 905: Nachi-Katsuura Observatory
- 906: Cobram
- 907: Melbourne
- 908: Toyama
- 909: Snohomish Hilltop Observatory
- 910: Caussols-ODAS
- 911: Collins Observatory, Corning Community College
- 912: Carbuncle Hill Observatory, Greene
- 913: Observatorio Kappa Crucis, Montevideo
- 914: Underwood Observatory, Hubbardston
- 915: River Oaks Observatory, New Braunfels
- 916: Oakley Observatory, Terre Haute
- 917: Pacific Lutheran University Keck Observatory
- 918: Badlands Observatory, Quinn
- 919: Desert Beaver Observatory
- 920: RIT Observatory, Rochester, NY (RIT = Rochester Institute of Technology)
- 921: SW Institute for Space Research, Cloudcroft
- 922: Timberland Observatory, Decatur
- 923: The Bradstreet Observatory, St. Davids
- 924: Observatoire du Cégep de Trois-Rivières
- 925: Palominas Observatory
- 926: Tenagra II Observatory
- 927: Madison-YRS
- 928: Moonedge Observatory, Northport
- 929: Port Allen
- 930: Tahiti
- 931: Punaauia
- 932: John J. McCarthy Obs., New Milford
- 933: Rockland Observatory, Sierra Vista
- 934: Poway Valley
- 935: Wyrick Observatory, Haymarket
- 936: Ibis Observatory, Manhaatan
- 937: Bradbury Observatory, Stockton-on-Tees
- 938: Linhaceira
- 939: Observatorio Rodeno
- 940: Waterlooville
- 941: Observatorio Pla D'Arguines
- 942: Grantham
- 943: Peverell
- 944: Observatorio Geminis, Dos Hermanas
- 945: Observatorio Monte Deva
- 946: Ametlla de Mar Observatory
- 947: Saint-Sulpice
- 948: Pymoor
- 949: Durtal
- 950: Roque de los Muchachos Observatory, La Palma
- 951: Highworth
- 952: Marxuquera
- 953: Montjoia
- 954: Teide Observatory (Observatorio del Teide)
- 955: Sassoeiros
- 956: Observatorio Pozuelo
- 957: Merignac
- 958: Observatoire de Dax
- 959: Ramonville Saint Agne
- 960: Rolvenden
- 961: City Observatory, Edinburgh
- 962: Gandia
- 963: Werrington
- 964: Southend Bradfield
- 965: Observa??o Astronómica no Algarve, Portim?o (COAA: Centro de Observa??o Astronómica no Algarve)
- 966: Church Stretton
- 967: Greens Norton
- 968: Haverhill
- 969: London-Regents Park (George Bishop's Observatory, Regent's Park, 1836-1861)
- 970: Chelmsford
- 971: Lisbon
- 972: Dun Echt
- 973: Harrow
- 974: Genoa
- 975: Valencia
- 976: Leamington Spa
- 977: Markree (Markree Observatory, County Sligo, Ireland)
- 978: Conder Brow
- 979: South Wonston
- 980: Lancaster
- 981: Armagh
- 982: Dunsink Observatory, Dublin
- 983: San Fernando
- 984: Eastfield
- 985: Telford
- 986: Ascot
- 987: The Isle of Man Observatory
- 988: Glasgow
- 989: Wilfred Hall Observatory, Preston
- 990: Madrid, Spain (Observatorio Astronómico de Madrid)
- 991: Liverpool (since 1867)
- 992: Liverpool (before 1867)
- 993: Woolston Observatory
- 994: Godalming
- 995: Durham (Durham University Observatory)
- 996: Oxford (Radcliffe Observatory)
- 997: Hartwell
- 998: London-Mill Hill (University of London Observatory)
- 999: Bordeaux-Floirac (Observatoire de Bordeaux)
A00-A99
- A00: Gravesend, U.K.
- A01: Masia Cal Maciarol Modul 2
- A02: Masia Cal Maciarol Modul 8
- A03: Torredembarra
- A04: Saint-Caprais
- A05: Belesta
- A06: Mataró
- A07: Gretz-Armainvilliers
- A08: Malibert
- A09: Quincampoix
- A10: Observatorio Astronómico de Conbera
- A11: Wormhout
- A12: Stazione Astronomica di Sozzago
- A13: Observatoire Naef, Marly, Switzerland (Observatory Naef Ependes)
- A14: Les Engarouines Observatory
- A15: Josef Bresser Sternwarte, Borken
- A16: Tentlingen
- A17: Guidestar Observatory, Weinheim
- A18: Herne
- A19: K?ln
- A20: S?gel
- A21: Irmtraut
- A22: Starkenburg Sternwarte-SOHAS
- A23: Sternwarte Weinheim, Germany [4]
- A24: New Millennium Observatory, Mozzate
- A25: Nova Milanese
- A26: Darmstadt
- A27: Eridanus Observatory, Langelsheim
- A28: Kempten
- A29: Santa Maria a Monte
- A30: Crespadoro
- A31: Corcaroli Observatory
- A32: Panker
- A33: Volkssternwarte Kirchheim
- A34: Grosshabersdorf
- A35: Hormersdorf Observatory
- A36: Ganda di Aviatico
- A37: Mueggelheim
- A38: Campocatino Automated Telescope, Collepardo
- A39: Altenburg
- A40: Pieta
- A41: Rezman Observatory, Kamnik
- A42: Gehrden
- A43: Inastars Observatory, Potsdam
- A44: Altschwendt
- A45: Karrenkneul
- A46: Lelekovice
- A47: Matera
- A48: Povegliano Veronese
- A49: Uppsala University-?ngstr?m laboratory
- A50: 安德魯紹夫卡天文台(Андруш?вська астроном?чна обсерватор?я),烏克蘭日托米爾州安德魯紹夫卡
- A51: Danzig
- A52: Etyek
- A53: Peschiera del Garda
- A54: Ostrorog
- A55: Osservatorio Astronomico Vallemare di Borbona, Italy
- A56: Parma
- A57: Osservatorio Astron. Margherita Hack, Firenze
- A58: Observatoire de Chalandray-Canotiers
- A59: Karlovy Vary Observatory
- A60: YSTAR-NEOPAT Station, Sutherland
- A61: Tortona
- A62: Aichtal
- A63: Cosmosoz Obs., Tassin la Demi Lune
- A64: Couvaloup de St-Cergue
- A65: Le Couvent de Lentin
- A66: Stazione Osservativa Astronomica, Livorno
- A67: Chiusa di Pesio
- A68: Swedenborg Obs., Bockholmwik
- A69: Osservatorio Palazzo Bindi Sergardi
- A70: Lumijoki
- A71: Stixendorf
- A72: Radebeul Observatory (Sternwarte "Adolph Diesterweg" Radebeul, Germany)
- A73: Penzing Astrometric Obs., Vienna
- A74: Bergen-Enkheim Observatory, Germany [5]
- A75: Fort Pius Observatory, Barcelona
- A76: Andromeda Observatory, Miskolc
- A77: Observatoire Chante-Perdrix, Dauban, Haute-Provence, France
- A78: Stia
- A79: Zvezdno Obshtestvo Observatory, Plana
- A80: Lindenberg Observatory
- A81: Balzaretto Observatory, Rome
- A82: Osservatorio Astronomico di Trieste
- A83: Jakokoski Observatory
- A84: TUBITAK National Observatory
- A85: Odessa Astronomical Observatory, Kryzhanovka, Ukraine
- A86: Albigneux
- A87: Rimbach
- A88: Bolzaneto
- A89: Sterni Observatory, Kempten
- A90: Sant Gervasi Observatory, Barcelona
- A91: Hankasalmi Observatory, Hankasalmi, Finland
- A92: Urseanu Observatory, Bucharest
- A93: Lucca
- A94: Cormons, ITALY
- A95: Taurus Hill Observatory, Varkaus
- A96: Klosterneuburg
- A97: Stammersdorf
- A98: Taurus-1 Observatory, Baran'
- A99: Osservatorio del Monte Baldo
B00-B99
- B00: Savigny-le-Temple
- B01: Taunus Observatory, Frankfurt
- B02: Kielce
- B03: Alter Satzberg, Vienna
- B04: Saint-Barthelemy Observatory
- B05: Ka-Dar Observatory, Barybino, Moscow region
- B06: Montseny Astronomical Observatory, Spain
- B07: Camorino
- B08: San Lazzaro di Savena
- B09: Capannoli, Italy Pietro Dora VivarelliASA
- B10: Observatoire du Mas des Gres, Moydans
- B11: Osservatorio Cima Rest, Imola
- B12: The Koschny Observatory, Noordwijkerhout
- B13: Osservatorio di Tradate
- B14: Ca del Monte
- B15: Inastars Observatory, Potsdam (since 2006)
- B16: 1st Moscow Gymnasium Observatory, Lipki
- B17: AZT-8 Evpatoria
- B18: Terskol
- B19: Observatori Iluro, Mataró
- B20: Observatori Carmelita, Tiana
- B21: Gaisberg Observatory (Sternwarte Gaisberg), Schaerding (Sch?rding, Austria)
- B22: Observatori d'Ager, Barcelona
- B23: Fiamene, Italy
- B24: Cesson
- B25: Catania
- B26: Observatoire des Terres Blanches, Reillanne
- B27: Picard Observatory, St. Veit
- B28: Mandi Observatory, Pagnacco, Italy
- B29: L'Ampolla Observatory, Tarragona
- B30: Szamotuly-Galowo, Poland
- B31: 南非大望遠鏡 (SALT), (位於南非北開普省索色蘭)
- B32: Observatory Gelenau(Germany)
- B33: Libbiano Observatory, Peccioli - AAAV
- B34: Green Island Observatory, Gecitkale
- B35: Bareket observatory, Macabim, Israel.
- B36: Redshed Observatory, Kallham
- B37: Obs. de L' Ametlla del Valles, Barcelona
- B38: Santa Mama
- B39: Tradate
- B40: Skylive Observatory, Catania, Italy (Gruppo Astrofili Catanesi)
- B41: Zlin Observatory
- B42: Vitebsk
- B43: Hennef
- B44: Eygalayes, France
- B45: Narama
- B46: Sintini Observatory, Argenta
- B47: Metsala Observatory, Espoo
- B48: Bocholt
- B49: Paus Observatory, Sabadell
- B50: Corner Observatory, Durmersheim
- B51: Vallauris
- B52: Observatorio El Far
- B53: Casal Lumbroso, Rome
- B54: Ager
- B55: Comeglians
- B56: Observatorio Sant Pere, Mataró
- B57: Laietania Observatory, Parets del Vallès
- B58: Polaris Observatory, Budapest
- B59: Borken
- B60: Deep Sky Observatorium, Bad Bentheim
- B61: Valldoreix Obs.,Sant Cugat del Valles
- B62: Brelingen
- B63: Solaris Observatory, Luczanowice
- B64: Slope Rock Observatory, Hyvinkaa
- B65: Komakallio Observatory, Kirkkonummi
- B66: Osservatorio di Casasco
- B67: Sternwarte Mirasteilas, Falera, Switzerland
- B68: Mount Matajur Observatory
- B69: Owls and Ravens Observatory, Holzgerlingen
- B70: Sant Celoni
- B71: Observatorio El Vendrell
- B72: Soerth
- B73: Mauren Valley Observatory, Holzgerlingen
- B74: Santa María de Montmagastrell
- B75: Stazione Astronomica Betelgeuse, Magnago
- B76: Sternwarte Sch?nfeld, Dresden
- B77: Schafmatt Observatory, Aarau
- B78: Astrophoton Observatory, Audorf
- B79: Marana Observatory
- B80: Osservatorio Astronomico Campomaggiore
- B81: Caimari
- B82: Maidbronn
- B83: Gières
- B84: Cyclops Observatory, Oostkapelle
- B85: Beilen Observatory
- B86: Sternwarte Hagen, Germany
- B87: Banyoles
- B88: Bigmuskie Observatory, Mombercelli
- B89: Observatori Astronòmic de Tiana
- B90: Malina River Observatory, Povoletto
- B91: Bollwiller
- B92: Chinon
- B93: Hoogeveen
- B94: Petrozavodsk
- B95: Achternholt
- B96: Brixiis Observatory, Kruibeke
- B97: Sterrenwacht Andromeda, Meppel
- B98: Siena
- B99: Santa Coloma de Gramenet
C00-C99
- C00: Velikie Luki
- C01: Lohrmann-Observatorium, Triebenberg
- C02: Observatorio Royal Park
- C03: Clayhole Observatory, Jokela, Finland
- C04: Kramatorsk, Ukraine
- C05: K?nigsleiten, Austria
- C06: Siberian State Aerospace University Observatory, Krasnoyarsk, Russia
- C07: Anysllum Observatory, Ager, Spain
- C08: Fiby, Sweden
- C09: Rouet, France
- C10: Maisoncelles, France
- C11: City Observatory, Slany, Czech Republic
- C12: Berta Observatory, Sabadell, Spain
- C13: Como, Italy
- C14: Sky Vistas Observatory, Eichgraben, Austria
- C15: ISON-Ussuriysk, Russia
- C16: Isarwinkel Observatory, Bad T?lz, Germany
- C17: Observatorio Joan Roget, Ager, Spain
- C18: Frasnes-Lez-Anvaing, Belgium
- C19: ROSA Observatory, Vaucluse, France
- C20: Kislovodsk Mtn. Astronomical Stn., Pulkovo Obs., Russia
- C21: Observatorio Via Lactea, Ager, Spain
- C22: Oberwiesenthal, Germany
- C23: Olmen, Belgium
- C24: Seveso, Italy
- C25: Pulkovo Observatory Station, Campo Imperatore, Italy
- C26: Levendaal Observatory, Leiden, Netherlands
- C27: Pallerols, Spain
- C28: Wellinghofen, Germany
- C29: Observatori Astronómic de Les Planes de Son, Spain
- C30: Petrozavodsk University Obs., Sheltozero Stn., Russia
- C31: Sternwarte Neanderhoehe Hochdahl e.V., Erkrath, Germany
- C32: Ka-Dar Observatory, TAU Station, Nizhny Arkhyz, Russia
- C33: Observatorio CEAM, Caimari, Canary Islands, Spain
- C34: Baja Astronomical Observatory, Hungary
- C35: Terrassa, Spain
- C36: Starry Wanderer Observatory, Baran', Belarus
- C37: Stowupland, England, Great Britain
- C38: Varuna Observatory, Cuorgnè, Italy
- C39: Nijmegen, Netherlands
- C40: Kuban State University Astrophysical Observatory, Russia
- C41: MASTER-II Observatory, Kislovodsk, Russia
- C42: Xingming Observatory, Mt. Nanshan, China
- C43: Hoyerswerda, Germany
- C44: A. Volta Observatory, Lanzo d'Intelvi, Italy
- C45: MPC1 Cassia Observatory, La Giustiniana, Italy
- C46: Horizon Observatory, Petropavlovsk, Kazakhstan
- C47: Nonndorf, Austria
- C48: Sayan Solar Observatory, Irkutsk, Russia
- C49: STEREO-A
- C50: STEREO-B
- C51: WISE
- C60: Argelander Institute for Astronomy Obs., Bonn, Germany
- C61: Chelles, France
D00-D99
- D14: Nanchuan Observatory, Guangzhou
- D16: Po Leung Kuk Observatory, Tuen Mun
- D17: Hong Kong
- D18: Mt. Guizi Observatory, China
- D20: Zadko Observatory, Wallingup Plain
- D21: Shenton Park
- D22: UWA Observatory, Crawley, WA, Australia
- D24: LightBuckets Observatory, Pingelly
- D25: Tzec Maun Observatory, Pingelly, WA, Australia
- D29: 紫金山天文台盱眙觀測站
- D32: JiangNanTianChi Observatory, Mt. Getianling
- D34: 墾丁天文台
- D35: 鹿林天文台
- D36: Tataka, Mt. Yu-Shan National Park
- D39: Shandong University Observatory, Weihai
- D44: Ishigakijima Astronomical Observatory
- D55: Kangwon Science High School Observatory, Ksho
- D57: Gimhae Astronomical Observatory, Uhbang-dong
- D58: KSA SEM Observatory, Danggam-dong
- D61: Suntopia Marina, Sumoto
- D62: Miyaki-Argenteus
- D70: Tosa
- D74: Nakagawa (Anan Science Center Nakagawa Observatory, formerly Nakagawa Science Center Nakagawa Observatory, Japan)
- D78: Iga-Ueno
- D79: YSVP Observatory, Vale Park, SA, Australia
- D80: Gumma Astronomical Observatory
- D81: Nagano
- D82: Wallaroo
- D83: Miwa
- D84: Hallet Cove
- D85: Ingle Farm
- D86: Penwortham
- D87: Brooklyn Park
- D88: Hiratsuka
- D89: Yamagata (Yamagata Astronomical Observatory)
- D90: RAS Observatory, Moorook, SA, Australia
- D91: Adati
- D92: Osaki, Japan
- D93: Sendai Astronomical Observatory, Japan
- D94: Takanezawa, Tochigi, Japan
- D95: Kurihara
- D96: Tzec Maun Observatory, Moorook, SA, Australia
- D97: Berri, SA, Australia'
E00-E99
- E00: Castlemaine
- E01: South Yarra (Barfold)
- E03: RAS Observatory, Officer
- E04: Pacific Sky Observatory, Saipan
- E05: Earl Hill Observatory, Trinity Beach
- E07: Murrumbateman, NSW, Australia
- E08: Wobblesock Observatory, Coonabarabran
- E09: Oakley Southern Sky Observatory, Coonabarabran
- E10: Siding Spring-Faulkes Telescope South
- E11: Frog Rock Observatory, Mudgee
- E12: Siding Spring Survey
- E13: Wanniassa
- E14: Hunters Hill Observatory, Ngunnawal
- E15: Magellan Observatory, near Goulburn
- E16: Grove Creek Observatory, Trunkey
- E17: Leura
- E18: BDI Observatory, Bangor, (Near Sutherland South of Sydney)
- E19: Kingsgrove
- E20: Marsfield
- E21: Norma Rose Observatory, Leyburn, Queensland, Australia
- E22: Univ. of Southern Queensland Obs., Mt. Kent
- E23: Arcadia, Australia
- E24: Tangra Observatory, St. Clair, NSW, Australia
- E25: Rochedale (APTA)
- E26: RAS Observatory, Biggera Waters
- E27: Thornlands
- E28: Kuriwa Observatory, Hawkesbury Heights, NSW, Australia
- E81: Nelson, New Zealand
F00-F99
- F51: Pan-STARRS 1, Haleakala
- F59: Ironwood Remote Observatory, Hawaii
- F60: Ironwood North Observatory, Hawaii
- F65: Haleakala-Faulkes Telescope North (Haleakala Observatory)
- F84: Hibiscus Observatory, Punaauia
- F85: Tiki Observatory, Punaauia
- F86: Moana Observatory, Punaauia
G00-G99
- G51: Byrne Observatory, Sedgwick Reserve, CA, U.S.A.
- G52: Stone Edge Observatory, El Verano, CA, U.S.A.
- G53: Alder Springs Observatory, Auberry, CA, U.S.A.
- G54: Hemet, CA, U.S.A.
- G55: Bakersfield, CA, U.S.A.
- G56: Walnut Creek
- G57: Dilbert Observatory, Forest Grove
- G58: Chabot Space and Science Center, Oakland
- G59: Maiden Lane Obs., Bainbridge Island
- G60: Carroll Observatory, Montecito
- G61: Pleasanton
- G62: Sunriver Nature Center Observatory, Sunriver
- G63: Mill Creek Observatory, The Dalles
- G64: Blue Canyon Observatory
- G65: Vulcan North, Lick Observatory, Mount Hamilton
- G66: Lake Forest Observatory, Forest Hills
- G67: Rancho del Sol, Camino
- G68: Sierra Stars Observatory, Markleeville
- G69: Thousand Oaks
- G70: Francisquito Observatory, Los Angeles, CA, U.S.A.
- G71: Rancho Palos Verdes
- G72: University Hills
- G73: Mount Wilson-TIE
- G74: Boulder Knolls Observatory, Escondido, CA, U.S.A.
- G75: Starry Knight Observatory, Coto de Caza
- G76: Altimira Observatory, Coto de Caza
- G77: Baldwin Lake
- G78: Desert Wanderer Observatory, El Centro
- G79: Goat Mountain Astronomical Research Station
- G80: Sierra Remote Observatories, Auberry
- G81: Temecula
- G82: SARA Observatory, Kitt Peak
- G83: Mt. Graham-LBT
- G84: Mount Lemmon SkyCenter
- G85: Vermillion Cliffs Observatory, Kanab
- G86: Tucson-Winterhaven
- G87: Calvin M. Hooper Memorial Observatory, Hyde Park
- G88: LAMP Observatory, New River
- G89: Kachina Observatory, Flagstaff
- G90: Three Buttes Observatory, Tucson
- G91: Whipple Observatory, Mt. Hopkins—2MASS(Fred Lawrence Whipple Observatory)
- G92: Jarnac Observatory, Vail
- G93: Sonoita Research Observatory, Sonoita, Arizona
- G94: Sonoran Skies Observatory, St. David
- G95: Hereford Arizona Observatory, Hereford
- G96: Mt. Lemmon Survey (Mount Lemmon)
- G97: Astronomical League Alpha Observatory, Portal
- G98: Calvin-Rehoboth Observatory, Rehoboth (Calvin-Rehoboth Robotic Observatory)
- G99: NF Observatory, Silver City
H00-H99
- H00: Tyrone
- H01: Magdalena Ridge Observatory, New Mexico Tech
- H02: Sulphur Flats Observatory, La Cueva
- H03: Sandia View Observatory, Rio Rancho, NM
- H04: Santa Fe
- H05: Edmund Kline Observatory, Deer Trail
- H06: RAS Observatory, Mayhill, NM (RAS (Remote Astronomical Society) Observatory of New Mexico; a.k.a. New Mexico Skies Observatory)
- H07: 7300 Observatory, Cloudcroft, NM
- H08: BlackBird Observatory, Cloudcroft, NM
- H09: Antelope Hills Observatory, Bennett
- H10: Tzec Maun Foundation Observatory, Mayhill, NM
- H11: LightBuckets Observatory, Rodeo, NM, U.S.A.
- H12: TechDome, Mayhill, NM, U.S.A.
- H13: Lenomiya Observatory, Casa Grande, AZ, U.S.A.
- H14: Morning Star Observatory, Tucson, AZ, U.S.A.
- H15: ISON-NM,Mayhill,美國,新墨西哥州
- H16: HUT Observatory, Eagle, CO, U.S.A.
- H17: Angel Peaks Observatory, CO, U.S.A.
- H18: Vail, AZ, U.S.A.
- H19: Lone Star Observatory, Caney, OK, U.S.A.
- H20: Eastern Illinois University Obs., Charleston, IL, U.S.A.
- H21: Astronomical Research Observatory, Westfield, IL, U.S.A.
- H22: Terre Haute
- H23: Pear Tree Observatory, Valparaiso
- H24: J. C. Veen Observatory, Lowell
- H25: Harvest Moon Observatory, Northfield
- H26: Doc Greiner Research Observatory, Janesvillle
- H27: Moonglow Observatory, Warrensburg
- H28: Preston Hills Observatory, Celina
- H29: Ivywood Observatory, Edmond
- H30: University of Oklahoma Observatory, Norman
- H31: Star Ridge Observatory, Weimar
- H32: Texas A&M Physics Observatory, College Station
- H33: Bixhoma Observatory, Bixby
- H34: Chapel Hill
- H35: Leavenworth
- H36: Sandlot Observatory, Scranton, KS
- H37: Grems Timmons Observatories, Graettinger
- H38: Timberline Observatory, Urbandale
- H39: S.O.S. Observatory, Minneapolis
- H40: Nubbin Ridge Observatory
- H41: Petit Jean Mountain, AR
- H42: Wartburg College Observatory, Waverly
- H43: Conway
- H44: Cascade Mountain
- H45: Petit Jean Mountain South, AR
- H46: Ricky Observatory, Blue Springs, Missouri.
- H47: Vicksburg, MS
- H48: PSU Greenbush Observatory, Pittsburg
- H49: ATU Astronomical Observatory, Russellville
- H50: University of Central Arkansas Obs., Conway
- H51: Greiner Research Observatory, Verona, WI
- H52: Hawkeye Observatory, Durand
- H53: Thompsonville
- H54: Cedar Drive Observatory, Pulaski
- H55: Astronomical Research Observatory, Charleston, IL (Antares Observatory, Charleston, IL)
- H56: Northbrook Meadow Observatory
- H57: Ohio State University Observatory, Lima
- H58: NASA/MSFC ALaMO, Redstone Arsenal
- H59: Prairie Grass Observatory, Camp Cullom
- H60: Heartland Observatory, Carmel, IN, U.S.A.
- H61: Newcastle
- H62: Calvin College Observatory
- H63: DeKalb Observatory, Auburn
- H64: Thomas More College Observatory, Crestview Hills
- H65: Waltonfields Observatory, Walton
- H66: Yellow Springs
- H67: Stonegate Observatory, Ann Arbor, MI
- H68: Red Barn Observatory, Ty Ty, GA
- H69: Ohio Wesleyan University
- H70: Asheville
- H71: Chula
- H72: Evelyn L. Egan Observatory, Fort Myers, Florida
- H73: Lakeland Astronomical Observatory, Kirtland
- H74: Bar J Observatory, New Smyrna Beach
- H75: Indian Hill North Observatory, Huntsburg
- H76: Oakridge Observatory, Miami
- H77: Buehler Observatory
- H78: University of Nari?o Observatory, Pasto
- H79: York University Observatory, Toronto
- H80: Halstead Observatory, Princeton
- H81: Hartung-Boothroyd Observatory, Ithaca, New York, USA
- H82: CBA-NOVAC Observatory, Front Royal, Virginia, USA
- H83: Timberlake Observatory, Oakton
- H84: Northview Observatory, Mendon
- H85: Silver Spring, MD
- H86: CBA-East Observatory, Laurel
- H87: Fenwick Observatory, Richmond
- H88: Hope Observatory, Belcamp
- H89: Galaxy Blues Observatory, Gatineau, QC
- H90: Ottawa
- H91: Reynolds Observatory, Potsdam
- H92: Arcturus Observatory
- H93: Berkeley Heights
- H94: Cedar Knolls
- H95: NJIT Observatory, Newark
- H96: Observatoire des Plé?ades, Mandeville
- H97: Talcott Mountain Science Center, Avon
- H98: Dark Roseanne Obs., Middlefield, CT
- H99: Sunhill Observatory, Newton
I00-I99
- I00: Carbuncle Hill Observatory, Coventry
- I01: Clay Center Observatory, Brookline
- I02: Cerro Tololo Observatory, La Serena—2MASS (Cerro Tololo Inter-American Observatory)
- I03: European Southern Obs., La Silla—ASTROVIRTEL (La Silla Observatory)
- I04: Mamalluca Observatory
- I05: Las Campanas Observatory-TIE
- I06: Werner Schmidt Obs., Dennis-Yarmouth Regional HS
- I07: Conlin Hill Observatory, Oxford
- I08: Alianza S4, Cerro Burek
- I09: Cerro Armazones, Chile
- I10: CAOS-CampoCatino Austral Observatory Survey (Campo Catino Austral Observatory Survey, Chile [6])
- I11: Gemini South Observatory, Cerro Pachón
- I12: Phillips Academy Observatory, Andover
- I13: Burleith Observatory, Washington D.C., U.S.A.
- I14: Tigh Speuran Observatory, Framingham
- I15: Wishing Star Observatory, Barrington
- I16: IAA-AI Atacama, San Pedro de Atacama, Chile
- I17: Thomas G. Cupillari Observatory, Fleetville, PA, U.S.A.
- I18: Fan Mountain Observatory, Covesville, VA, U.S.A.
- I19: Observatorio El Gato Gris, Tanti, Argentina
- I20: Rio Cuarto, Argentina
- I21: El Condor Observatory, Córdoba
- I22: Abbey Ridge Observatory, Stillwater Lake
- I23: Frosty Cold Observatory, Mash Harbor, ME, U.S.A.
- I24: Lake of the Woods Observatory, Locust Grove, VA, U.S.A.
- I25: ECCCO Observatory, Bosque Alegre, Argentina
- I26: Observatorio Kappa Crucis, Córdoba, Argentina
- I27: Barred Owl Observatory, Carp, Canada
- I28: Starhoo Observatory, Lakeville, MA, U.S.A.
- I29: Middlesex School Observatory, Concord, MA, U.S.A.
- I30: Observatorio Geminis Austral
- I31: Observatorio Astronomico del Colegio Cristo Rey
- I32: Observatorio Beta Orionis, Rosario
- I33: SOAR, Cerro Pachón, Chile
- I34: Morgantown, PA, U.S.A.
- I35: Sidoli, Argentina
- I36: Observatorio Los Campitos, Ca?uela, Argentina
- I37: Astrodomi Observatory, Santa Rita [7]
- I38: Observatorio Los Algarrobos, Salto
- I39: Observatorio Cruz del Sur, San Justo, Argentina
- I40: La Silla--TRAPPIST, Chile
- I41: Palomar Mountain--PTF, CA, U.S.A.
- I42: OWC Observatory, Niceville, FL, U.S.A.
- I43: Tarleton State University Obs., Stephenville, TX, U.S.A.
- I66: Taurus Australis Observatory, Brasília, Brazil
- I68: Pousada dos Anoes Observatory
- I77: CEAMIG-REA Observatory, Belo Horizonte, Brazil
- I82: Güímar, Canary Islands, Spain
- I83: Cherryvalley Observatory, Rathmolyon, Ireland
- I84: Cerro del Viento, Badajoz, Spain
- I85: Las Negras, Spain
- I86: Observatorio UCM, Madrid, Spain
- I87: Astroshot Observatory, Monasterevin, Ireland
- I88: Fuensanta de Martos, Spain
- I89: Nerpio, Spain
- I90: Blackrock Castle Observatory, Ireland
- I91: Retamar, Spain
- I92: Astreo Observatory, Mairena del Aljarafe, Spain
- I93: St Pardon de Conques, France
- I94: Observatorio Rho Ophiocus, Las Rozas de Madrid, Spain
- I95: Observatorio de la Hita, Spain
- I96: Hyperion Observatory, Urbanizacion Caraquiz, Spain
- I97: Penn Heights Observatory, Rickmansworth, U.K.
- I98: El Berrueco, Spain
- I99: Observatorio Blanquita, Vaciamadrid, Spain
J00-J99
- J00: Segorbe, Spain
- J01: Observatorio Cielo Profundo, Oviedo, Spain
- J02: Busot, Spain
- J03: Gothers Observatory, St. Dennis
- J04: ESA Optical Ground Station, Tenerife
- J05: Bootes Observatory, Boecillo
- J06: Trent Astronomical Observatory, Clifton
- J07: Observatorio SPAG Monfragüe, Palazuelo-Empalme
- J08: Observatorio Zonalunar, Puzol
- J09: Balbriggan
- J10: Alicante
- J11: Matosinhos
- J12: Caraquiz
- J13: La Palma-Liverpool Telescope
- J14: La Corte
- J15: Muxagata
- J16: An Carraig Observatory, Northern Ireland An Carraig Observatory
- J17: Ragdon
- J18: Dingle Observatory, Montgomery, Wales, U.K.
- J19: El Maestrat
- J20: Aravaca
- J21: El Boalo
- J22: Tacande Observatory, La Palma
- J23: Centre Astronomique de La Couyere
- J24: Observatorio Altamira
- J25: Penamayor Observatory, Nava
- J26: The Spaceguard Centre, Knighton
- J27: El Guijo Observatory, Spain
- J28: Observatorio Jaén, Jaén, Spain
- J29: Observatorio Nira, Tias
- J30: Observatorio Ventilla, Madrid
- J31: La Axarquia
- J32: Aljaraque
- J33: University of Hertfordshire Obs., Bayfordbury
- J34: La Fecha
- J35: Tucci Observatory, Martos
- J36: Observatorio DiezALaOnce, Illana
- J37: Huelva
- J38: Observatorio La Vara, Valdés
- J39: Ingenio
- J40: Observatorio Malaga Malaga
- J41: Raheny
- J42: Puzol
- J43: Ouka?meden Observatory
- J44: Observatorio Iturrieta, Alava
- J45: Observatorio Montana Cabreja Vega de San Mateo, Gran Canaria.
- J46: Observatorio Montana Blanca, Tias
- J47: Observatorio Nazaret
- J48: Observatory Mackay, La Laguna
- J49: Santa Pola
- J50: La Palma-NEON
- J51: Observatorio Atlante, Tenerife
- J52: Observatorio Pinsoro
- J53: Posadas
- J54: Bradford Robotic Telescope
- J55: Los Altos de Arguineguin Observatory
- J56: Observatorio La Avejerilla
- J57: Centro Astronómico Alto Turia, Valencia
- J58: Brynllefrith Observatory, Llantwit Fardre, Wales, UK
- J59: Observatorio Linceo, Santander
- J60: Tocororo Observatory, Arquillinos
- J61: Brownstown Observatory, Kilcloon
- J62: Kingsland Observatory, Boyle
- J63: San Gabriel
- J64: La Mata
- J65: Celbridge
- J66: Kinver
- J67: Observatorio La Puebla de Vallbona
- J68: Tweenhills Observatory, Hartpury, Gloucestershire, England, UK
- J69: North Observatory, Clanfield, UK
- J70: Obs. Astronómico Vega del Thader, El Palmar
- J71: Willow Bank Observatory, Lancashire, England, UK
- J72: Valle del Sol
- J73: Quainton, Buckinghamshire, England, UK (Quainton Observatory)
- J74: Bilbao
- J75: OAM Observatory, La Sagra, Spain (Observatorio Astronómico de La Sagra)
- J76: La Murta, Spain
- J77: Golden Hill Observatory, Stourton Caundle, Dorset, England, UK
- J78: Murcia
- J79: Observatorio Calarreona, Aguilas
- J80: Sainte Helene
- J81: Guirguillano
- J82: Leyland
- J83: Olive Farm Observatory, Hoghton
- J84: South Observatory, Clanfield
- J85: Makerstoun
- J86: Sierra Nevada Observatory (Observatorio de Sierra Nevada, Spain)
- J87: La Ca?ada (Observatorio de La Ca?ada(La Ca?ada Observatory), ávila, Spain)
- J88: Strawberry Field Obs., Southampton
- J89: Tres Cantos Observatory
- J90: West Challow
- J91: Alt emporda Observatory, Figueres
- J92: Beaconsfield
- J93: Mount Tuffley Observatory, Gloucester, England, UK
- J94: Abbeydale, Gloucester, England, UK
- J95: Great Shefford, Berkshire, England, UK
- J96: Observatorio de Aras de los Olmos (OAO) - Universidad de Valencia, Aras de los Olmos, Valencia, Spain
- J97: Alginet
- J98: Observatorio Manises
- J99: Burjassot