MPC observations statistics

SATOBS - Observations of natural satellites

Sorted by observations per object

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