MPC observations statistics

SATOBS - Observations of natural satellites

Sorted by number of observations

The statistics were made with a self-developed program by Jost Jahn, Amrum, Germany, itfstat@jostjahn.de.

They will be updated some days after publication of new files by the MPC, mostly each 2 months or so.
Date of this file is 06-06-2026
Number of observations of top 15 stations at Minor Planet Center for SATOBS class
Number of observations of top 15 stations at Minor Planet Center for SATOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 568 5696 272 20.94 1984 – 2023 40 Maunakea
2 T14 3812 271 14.07 2003 – 2023 21 Canada-France-Hawaii Telescope, Maunakea
3 T05 3177 10 317.70 2016 – 2025 10 ATLAS-HKO, Haleakala
4 T08 2864 11 260.36 2017 – 2025 9 ATLAS-MLO, Mauna Loa
5 415 2039 15 135.93 2004 – 2010 7 Kambah
6 704 1663 9 184.78 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
7 689 1306 8 163.25 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
8 W68 1025 8 128.13 2022 – 2025 4 ATLAS Chile, Rio Hurtado
9 G36 994 13 76.46 2011 – 2022 12 Calar Alto-CASADO
10 304 717 88 8.15 2002 – 2023 22 Las Campanas Observatory
11 D29 680 13 52.31 2007 – 2025 19 Purple Mountain Observatory, XuYi Station
12 691 668 15 44.53 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
13 W84 650 38 17.11 2013 – 2022 10 Cerro Tololo-DECam
14 F51 603 24 25.13 2011 – 2024 14 Pan-STARRS 1, Haleakala
15 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
16 P07 565 7 80.71 2021 – 2024 4 Space Surveillance Telescope, HEH Station
17 807 560 97 5.77 1998 – 2022 25 Cerro Tololo Observatory, La Serena
18 E07 559 17 32.88 2011 – 2015 5 Murrumbateman
19 G96 549 18 30.50 2005 – 2025 21 University of Arizona Mt. Lemmon Survey
20 M22 460 8 57.50 2022 – 2025 4 ATLAS South Africa, Sutherland
21 673 459 9 51.00 1968 – 2017 50 Table Mountain Observatory, Wrightwood
22 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
23 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
24 G45 427 7 61.00 2014 – 2016 3 Space Surveillance Telescope, Atom Site
25 I41 379 10 37.90 2010 – 2024 15 Palomar Mountain--ZTF
26 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
27 C51 275 10 27.50 2010 – 2024 15 WISE
28 644 254 11 23.09 2001 – 2006 6 Palomar Mountain/NEAT
29 381 222 7 31.71 1986 – 1992 7 Tokyo-Kiso
30 T09 222 48 4.63 2016 – 2025 10 Subaru Telescope, Maunakea
31 703 221 8 27.63 1999 – 2023 25 University of Arizona Catalina Sky Survey
32 G80 217 1 217.00 2015 – 2015 1 Sierra Remote Observatories, Auberry
33 286 210 1 210.00 2003 – 2005 3 Yunnan Observatory
34 672 199 8 24.88 1916 – 1951 36 Mount Wilson
35 699 193 8 24.13 1998 – 2006 9 Lowell Observatory-LONEOS
36 809 180 22 8.18 1981 – 2013 33 European Southern Observatory, La Silla
37 000 180 4 45.00 1906 – 1910 5 Greenwich
38 511 170 2 85.00 1998 – 1999 2 Haute Provence
39 695 157 29 5.41 1969 – 2014 46 Kitt Peak
40 V00 155 24 6.46 2021 – 2025 5 Kitt Peak-Bok
41 J43 139 8 17.38 2011 – 2024 14 Oukaimeden Observatory, Marrakech
42 309 136 21 6.48 2000 – 2022 23 Cerro Paranal
43 608 126 7 18.00 2001 – 2005 5 Haleakala-AMOS
44 337 115 1 115.00 2003 – 2004 2 Sheshan
45 269 115 27 4.26 2024 – 2026 3 Magellan-Baade Telescope
46 106 89 8 11.13 1999 – 2021 23 Crni Vrh
47 950 78 19 4.11 1997 – 2011 15 La Palma
48 709 76 2 38.00 1997 – 1998 2 W & B Observatory, Cloudcroft
49 754 75 4 18.75 1904 – 1955 52 Yerkes Observatory, Williams Bay
50 291 72 10 7.20 2003 – 2010 8 LPL/Spacewatch II
51 493 68 9 7.56 2001 – 2002 2 Calar Alto
52 696 61 10 6.10 1997 – 2002 6 Whipple Observatory, Mt. Hopkins
53 333 58 6 9.67 2003 – 2005 3 Desert Eagle Observatory
54 Z80 56 8 7.00 2016 – 2023 8 Northolt Branch Observatory
55 926 53 7 7.57 2000 – 2014 15 Tenagra II Observatory, Nogales
56 G40 51 7 7.29 2015 – 2020 6 Slooh.com Canary Islands Observatory
57 J75 48 5 9.60 2009 – 2011 3 OAM Observatory, La Sagra
58 H06 47 9 5.22 2006 – 2013 8 iTelescope Observatory, Mayhill
59 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
60 C95 47 9 5.22 2013 – 2020 8 SATINO Remote Observatory, Haute Provence
61 I89 46 7 6.57 2013 – 2013 1 iTelescope Observatory, Nerpio
62 Y00 45 7 6.43 2014 – 2022 9 SONEAR Observatory, Oliveira
63 R17 41 2 20.50 2025 – 2025 1 ATLAS-TDO
64 F52 40 7 5.71 2015 – 2025 11 Pan-STARRS 2, Haleakala
65 E12 40 6 6.67 2005 – 2011 7 Siding Spring Survey
66 O18 32 4 8.00 2023 – 2026 4 WFST, Lenghu
67 185 32 6 5.33 2001 – 2007 7 Observatoire Astronomique Jurassien-Vicques
68 W88 28 6 4.67 2015 – 2021 7 Slooh.com Chile Observatory, La Dehesa
69 H15 27 4 6.75 2010 – 2017 8 ISON-NM Observatory, Mayhill
70 850 25 1 25.00 2014 – 2014 1 Cordell-Lorenz Observatory, Sewanee
71 693 25 6 4.17 1967 – 2000 34 Catalina Station, Tucson
72 120 23 2 11.50 1998 – 1999 2 Visnjan
73 690 23 3 7.67 1929 – 1981 53 Lowell Observatory, Flagstaff
74 087 22 1 22.00 1911 – 1911 1 Helwan
75 G37 21 8 2.63 2014 – 2022 9 Lowell Discovery Telescope
76 585 21 1 21.00 2021 – 2021 1 Kyiv comet station
77 A13 20 1 20.00 2005 – 2005 1 Observatoire Naef, Ependes
78 198 20 1 20.00 2010 – 2010 1 Wildberg
79 Z32 18 1 18.00 2023 – 2023 1 Observatorio Astrofisico de Javalambre
80 822 17 2 8.50 1939 – 1952 14 Cordoba
81 800 16 2 8.00 1898 – 1899 2 Harvard Observatory, Arequipa
82 G68 15 1 15.00 2010 – 2010 1 Sierra Stars Observatory, Markleeville
83 732 15 3 5.00 2000 – 2000 1 Oaxaca
84 G92 14 3 4.67 2006 – 2006 1 Jarnac Observatory, Vail
85 K83 14 1 14.00 2020 – 2020 1 Osservatorio Astronomico Beppe Forti, Montelupo
86 888 14 1 14.00 1988 – 1989 2 Gekko
87 024 14 3 4.67 1908 – 1909 2 Heidelberg-Konigstuhl
88 413 14 8 1.75 1990 – 1998 9 Siding Spring Observatory
89 A50 13 2 6.50 2008 – 2011 4 Andrushivka Astronomical Observatory
90 W76 13 3 4.33 2020 – 2022 3 CHILESCOPE Observatory, Rio Hurtado
91 L01 13 3 4.33 2019 – 2026 8 Visnjan Observatory, Tican
92 X74 12 4 3.00 2019 – 2020 2 Observatorio Campo dos Amarais
93 Y89 12 2 6.00 2023 – 2025 3 Proxima Centauri Observatory, Valdin
94 Z22 12 3 4.00 2016 – 2017 2 MASTER-IAC Observatory, Tenerife
95 133 12 1 12.00 1998 – 1998 1 Les Tardieux
96 599 12 2 6.00 2004 – 2004 1 Campo Imperatore-CINEOS
97 958 12 3 4.00 2007 – 2026 20 Observatoire de Dax
98 213 12 4 3.00 2006 – 2007 2 Observatorio Montcabre
99 C73 11 2 5.50 2011 – 2013 3 Galati Observatory
100 688 11 6 1.83 1982 – 2017 36 Lowell Observatory, Anderson Mesa Station
101 C41 10 3 3.33 2014 – 2015 2 MASTER-II Observatory, Kislovodsk
102 K95 10 2 5.00 2016 – 2017 2 MASTER-SAAO Observatory, Sutherland
103 V30 9 2 4.50 2014 – 2014 1 Heaven on Earth Observatory, Mayhill
104 365 9 2 4.50 1993 – 1993 1 Uto Observatory
105 Y05 9 3 3.00 2023 – 2023 1 SONEAR Wykrota-CEAMIG, Serra da Piedade
106 B18 9 1 9.00 1998 – 1998 1 Terskol
107 J37 9 3 3.00 2008 – 2011 4 Huelva
108 835 9 1 9.00 1999 – 1999 1 Drum Hill Station, Chelmsford
109 J04 9 2 4.50 2010 – 2015 6 ESA Optical Ground Station, Tenerife
110 071 9 1 9.00 1984 – 1984 1 NAO Rozhen, Smolyan
111 938 8 2 4.00 2002 – 2021 20 Linhaceira
112 739 8 2 4.00 2000 – 2000 1 Sunflower Observatory, Olathe
113 D00 8 2 4.00 2012 – 2012 1 ASC-Kislovodsk Observatory
114 858 8 1 8.00 2023 – 2023 1 Tebbutt Observatory, Edgewood
115 I77 8 1 8.00 2010 – 2010 1 CEAMIG-REA Observatory, Belo Horizonte
116 074 8 1 8.00 1957 – 1957 1 Boyden Observatory, Bloemfontein
117 H07 8 1 8.00 2014 – 2014 1 7300 Observatory, Cloudcroft
118 V37 8 1 8.00 2014 – 2014 1 McDonald Observatory-LCO ELP
119 D35 7 3 2.33 2006 – 2008 3 Lulin Observatory
120 H21 7 2 3.50 2011 – 2012 2 Astronomical Research Observatory, Westfield
121 300 7 1 7.00 2012 – 2012 1 Bisei Spaceguard Center-BATTeRS
122 E10 7 2 3.50 2010 – 2010 1 Siding Spring-Faulkes Telescope South
123 808 6 2 3.00 1965 – 1965 1 El Leoncito
124 G84 6 1 6.00 2013 – 2013 1 Mount Lemmon SkyCenter
125 H82 6 1 6.00 2010 – 2010 1 CBA-NOVAC Observatory, Front Royal
126 H29 6 1 6.00 2003 – 2003 1 Ivywood Observatory, Edmond
127 X09 6 1 6.00 2025 – 2025 1 Deep Random Survey, Rio Hurtado
128 B01 6 2 3.00 2007 – 2011 5 Taunus Observatory, Frankfurt
129 126 6 2 3.00 2026 – 2026 1 Monte Viseggi L. Zannoni Observatory
130 N51 6 2 3.00 2026 – 2026 1 GROWTH India Telescope, IAO, Hanle
131 C97 6 2 3.00 2026 – 2026 1 Al-Fulaij Observatory, Oman
132 R59 6 2 3.00 2026 – 2026 1 Camarasa Observatory, Astrocamp Nerpio
133 095 5 2 2.50 1970 – 1987 18 Crimea-Nauchnyi
134 V21 5 1 5.00 2026 – 2026 1 Cewanee Observatory at DSNM
135 215 5 2 2.50 2005 – 2020 16 Buchloe
136 T12 5 3 1.67 2018 – 2018 1 University of Hawaii 88-inch telescope, Maunakea
137 118 5 1 5.00 2017 – 2017 1 Astronomical and Geophysical Observatory, Modra
138 M26 5 2 2.50 2026 – 2026 1 Zen Observatory, Scandicci
139 I52 4 1 4.00 2019 – 2019 1 Steward Observatory, Mt. Lemmon Station
140 683 4 1 4.00 2008 – 2008 1 Goodricke-Pigott Observatory, Tucson
141 K33 4 1 4.00 2013 – 2013 1 San Defendente
142 C82 4 1 4.00 2026 – 2026 1 Osservatorio Astronomico Nastro Verde, Sorrento
143 H01 4 1 4.00 2009 – 2009 1 Magdalena Ridge Observatory, Socorro
144 I02 4 4 1.00 1998 – 1998 1 Cerro Tololo Observatory, La Serena--2MASS
145 829 4 1 4.00 1998 – 1998 1 Complejo Astronomico El Leoncito
146 G34 4 1 4.00 2021 – 2021 1 Oberfrauendorf
147 760 4 1 4.00 1963 – 1970 8 Goethe Link Observatory, Brooklyn
148 104 4 2 2.00 2026 – 2026 1 San Marcello Pistoiese
149 U55 3 1 3.00 2022 – 2022 1 Golden Ears Observatory, Maple Ridge
150 M11 3 1 3.00 2022 – 2022 1 Novaastro Observatory, Banon
151 566 3 1 3.00 1996 – 1996 1 Haleakala-NEAT/GEODSS
152 C77 3 1 3.00 2013 – 2013 1 Bernezzo Observatory
153 W94 3 1 3.00 2022 – 2022 1 MAPS, San Pedro de Atacama
154 W92 3 1 3.00 2023 – 2023 1 MASTER-OAFA Observatory, San Juan
155 E23 3 1 3.00 2023 – 2023 1 Arcadia
156 761 3 1 3.00 2001 – 2001 1 Zephyrhills
157 461 3 1 3.00 2013 – 2013 1 University of Szeged, Piszkesteto Stn. (Konkoly)
158 678 3 1 3.00 2000 – 2000 1 Fountain Hills
159 247 3 1 3.00 2023 – 2023 1 Roving Observer
160 143 3 1 3.00 2006 – 2006 1 Gnosca
161 N89 3 1 3.00 2023 – 2023 1 Xingming Observatory #2, Nanshan
162 J95 3 1 3.00 2026 – 2026 1 Great Shefford
163 L51 3 1 3.00 2022 – 2022 1 MARGO, Nauchnyi
164 M54 3 1 3.00 2026 – 2026 1 Observatoire Albireo de Biot
165 B72 3 1 3.00 2026 – 2026 1 Soerth Observatory
166 X04 3 1 3.00 2026 – 2026 1 MCD Observatory, Saint-Anaclet
167 565 3 1 3.00 2004 – 2004 1 Bassano Bresciano
168 Z21 3 1 3.00 2026 – 2026 1 Tenerife-LCO Aqawan A #1
169 M14 3 1 3.00 2026 – 2026 1 Schiaparelli Gallarate Station
170 718 3 1 3.00 2026 – 2026 1 Tooele
171 224 3 1 3.00 2004 – 2004 1 Ottmarsheim
172 Q10 3 1 3.00 2026 – 2026 1 Toyokawa Observatory
173 N56 3 1 3.00 2026 – 2026 1 Jiama'erdeng Tianwentai JIST project, Ali, Tibet
174 138 3 1 3.00 2005 – 2005 1 Village-Neuf
175 910 3 1 3.00 1997 – 1997 1 Caussols-ODAS
176 R95 3 1 3.00 2026 – 2026 1 Fiammetta Observatory, La Spezia
177 705 3 1 3.00 2004 – 2004 1 Apache Point
178 W98 3 1 3.00 2017 – 2017 1 Polonia Observatory, San Pedro de Atacama
179 Z84 3 1 3.00 2017 – 2017 1 Calar Alto-Schmidt
180 K32 3 1 3.00 2026 – 2026 1 Maritime Alps Observatory, Cuneo
181 757 2 1 2.00 1999 – 1999 1 High Point
182 U69 2 1 2.00 2014 – 2014 1 iTelescope SRO Observatory, Auberry
183 697 2 1 2.00 2000 – 2000 1 Kitt Peak, McGraw-Hill
184 919 2 1 2.00 2000 – 2000 1 Desert Beaver Observatory
185 D43 2 1 2.00 2026 – 2026 1 45th Parallel Observatory, Pino Torinese
186 636 2 1 2.00 2002 – 2002 1 Essen
187 M38 2 1 2.00 2026 – 2026 1 Harsona Observatory, Nyiregyhaza
188 R63 2 1 2.00 2026 – 2026 1 Observatorio Sureste Estelar, Fuente Alamo
189 303 2 1 2.00 1994 – 1994 1 OAN de Llano del Hato, Merida
190 802 1 1 1.00 1894 – 1894 1 Harvard Observatory, Cambridge
191 094 1 1 1.00 1929 – 1929 1 Crimea-Simeiz
192 330 1 1 1.00 1964 – 1964 1 Purple Mountain Observatory, Nanking
193 078 1 1 1.00 1935 – 1935 1 Johannesburg
194 119 1 1 1.00 1994 – 1994 1 Abastuman
Sum 194 37298 395 94.43 1894 – 2026 133 194 names