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 03-08-2026
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 3149 10 314.90 2016 – 2025 10 ATLAS-HKO, Haleakala
2 T08 2845 11 258.64 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 554 7 79.14 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
17 673 459 9 51.00 1968 – 2017 50 Table Mountain Observatory, Wrightwood
18 D29 647 13 49.77 2007 – 2025 19 Purple Mountain Observatory, XuYi Station
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
22 691 665 15 44.33 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 541 18 30.06 2005 – 2025 21 Mt. Lemmon Survey
28 703 221 8 27.63 1999 – 2023 25 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
36 568 5641 262 21.53 1984 – 2023 40 Maunakea
37 585 21 1 21.00 2021 – 2021 1 Kyiv comet station
38 198 20 1 20.00 2010 – 2010 1 Wildberg
39 A13 20 1 20.00 2005 – 2005 1 Observatoire Naef, Ependes
40 754 75 4 18.75 1904 – 1955 52 Yerkes Observatory, Williams Bay
41 Z32 18 1 18.00 2023 – 2023 1 Observatorio Astrofisico de Javalambre
42 608 126 7 18.00 2001 – 2005 5 Haleakala-AMOS
43 W84 644 37 17.41 2013 – 2022 10 Cerro Tololo-DECam
44 J43 136 8 17.00 2011 – 2024 14 Oukaimeden Observatory, Marrakech
45 G68 15 1 15.00 2010 – 2010 1 Sierra Stars Observatory, Markleeville
46 T14 3524 251 14.04 2003 – 2023 21 Canada-France-Hawaii Telescope, Maunakea
47 888 14 1 14.00 1988 – 1989 2 Gekko
48 K83 14 1 14.00 2020 – 2020 1 Osservatorio Astronomico Beppe Forti, Montelupo
49 133 12 1 12.00 1998 – 1998 1 Les Tardieux
50 R17 12 1 12.00 2025 – 2025 1 ATLAS-TDO
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
60 304 598 72 8.31 2002 – 2023 22 Las Campanas Observatory
61 809 180 22 8.18 1981 – 2013 33 European Southern Observatory, La Silla
62 I77 8 1 8.00 2010 – 2010 1 CEAMIG-REA Observatory, Belo Horizonte
63 074 8 1 8.00 1957 – 1957 1 Boyden Observatory, Bloemfontein
64 H07 8 1 8.00 2014 – 2014 1 7300 Observatory, Cloudcroft
65 V37 8 1 8.00 2014 – 2014 1 McDonald Observatory-LCO ELP
66 800 16 2 8.00 1898 – 1899 2 Harvard Observatory, Arequipa
67 858 8 1 8.00 2023 – 2023 1 Tebbutt Observatory, Edgewood
68 690 23 3 7.67 1929 – 1981 53 Lowell Observatory, Flagstaff
69 926 53 7 7.57 2000 – 2014 15 Tenagra II Observatory, Nogales
70 493 68 9 7.56 2001 – 2002 2 Calar Alto
71 G40 51 7 7.29 2015 – 2020 6 Slooh.com Canary Islands Observatory
72 291 72 10 7.20 2003 – 2010 8 LPL/Spacewatch II
73 Z80 56 8 7.00 2016 – 2023 8 Northolt Branch Observatory
74 300 7 1 7.00 2012 – 2012 1 Bisei Spaceguard Center-BATTeRS
75 H15 27 4 6.75 2010 – 2017 8 ISON-NM Observatory, Mayhill
76 E12 40 6 6.67 2005 – 2011 7 Siding Spring Survey
77 I89 46 7 6.57 2013 – 2013 1 iTelescope Observatory, Nerpio
78 A50 13 2 6.50 2008 – 2011 4 Andrushivka Astronomical Observatory
79 309 136 21 6.48 2000 – 2022 23 Cerro Paranal
80 Y00 45 7 6.43 2014 – 2022 9 SONEAR Observatory, Oliveira
81 V00 151 24 6.29 2021 – 2025 5 Kitt Peak-Bok
82 696 61 10 6.10 1997 – 2002 6 Whipple Observatory, Mt. Hopkins
83 H29 6 1 6.00 2003 – 2003 1 Ivywood Observatory, Edmond
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 F52 40 7 5.71 2015 – 2025 11 Pan-STARRS 2, Haleakala
90 807 482 85 5.67 1998 – 2022 25 Cerro Tololo Observatory, La Serena
91 C73 11 2 5.50 2011 – 2013 3 Galati Observatory
92 695 157 29 5.41 1969 – 2014 46 Kitt Peak
93 185 32 6 5.33 2001 – 2007 7 Observatoire Astronomique Jurassien-Vicques
94 C95 47 9 5.22 2013 – 2020 8 SATINO Remote Observatory, Haute Provence
95 H06 47 9 5.22 2006 – 2013 8 iTelescope Observatory, Mayhill
96 K95 10 2 5.00 2016 – 2017 2 MASTER-SAAO Observatory, Sutherland
97 118 5 1 5.00 2017 – 2017 1 Astronomical and Geophysical Observatory, Modra
98 732 15 3 5.00 2000 – 2000 1 Oaxaca
99 O18 14 3 4.67 2023 – 2025 3 WFST, Lenghu
100 W88 28 6 4.67 2015 – 2021 7 Slooh.com Chile Observatory, La Dehesa
101 024 14 3 4.67 1908 – 1909 2 Heidelberg-Konigstuhl
102 G92 14 3 4.67 2006 – 2006 1 Jarnac Observatory, Vail
103 J04 9 2 4.50 2010 – 2015 6 ESA Optical Ground Station, Tenerife
104 365 9 2 4.50 1993 – 1993 1 Uto Observatory
105 V30 9 2 4.50 2014 – 2014 1 Heaven on Earth Observatory, Mayhill
106 958 9 2 4.50 2007 – 2013 7 Observatoire de Dax
107 T09 166 37 4.49 2016 – 2024 9 Subaru Telescope, Maunakea
108 W76 13 3 4.33 2020 – 2022 3 CHILESCOPE Observatory, Rio Hurtado
109 693 25 6 4.17 1967 – 2000 34 Catalina Station, Tucson
110 950 78 19 4.11 1997 – 2011 15 La Palma
111 D00 8 2 4.00 2012 – 2012 1 ASC-Kislovodsk Observatory
112 Z22 12 3 4.00 2016 – 2017 2 MASTER-IAC Observatory, Tenerife
113 I52 4 1 4.00 2019 – 2019 1 Steward Observatory, Mt. Lemmon Station
114 683 4 1 4.00 2008 – 2008 1 Goodricke-Pigott Observatory, Tucson
115 K33 4 1 4.00 2013 – 2013 1 San Defendente
116 H01 4 1 4.00 2009 – 2009 1 Magdalena Ridge Observatory, Socorro
117 938 8 2 4.00 2002 – 2021 20 Linhaceira
118 829 4 1 4.00 1998 – 1998 1 Complejo Astronomico El Leoncito
119 G34 4 1 4.00 2021 – 2021 1 Oberfrauendorf
120 760 4 1 4.00 1963 – 1970 8 Goethe Link Observatory, Brooklyn
121 739 8 2 4.00 2000 – 2000 1 Sunflower Observatory, Olathe
122 H21 7 2 3.50 2011 – 2012 2 Astronomical Research Observatory, Westfield
123 E10 7 2 3.50 2010 – 2010 1 Siding Spring-Faulkes Telescope South
124 269 24 7 3.43 2024 – 2025 2 Magellan-Baade Telescope
125 C41 10 3 3.33 2014 – 2015 2 MASTER-II Observatory, Kislovodsk
126 213 12 4 3.00 2006 – 2007 2 Observatorio Montcabre
127 X74 12 4 3.00 2019 – 2020 2 Observatorio Campo dos Amarais
128 J37 9 3 3.00 2008 – 2011 4 Huelva
129 B01 6 2 3.00 2007 – 2011 5 Taunus Observatory, Frankfurt
130 808 6 2 3.00 1965 – 1965 1 El Leoncito
131 910 3 1 3.00 1997 – 1997 1 Caussols-ODAS
132 W94 3 1 3.00 2022 – 2022 1 MAPS, San Pedro de Atacama
133 L51 3 1 3.00 2022 – 2022 1 MARGO, Nauchnyi
134 565 3 1 3.00 2004 – 2004 1 Bassano Bresciano
135 224 3 1 3.00 2004 – 2004 1 Ottmarsheim
136 138 3 1 3.00 2005 – 2005 1 Village-Neuf
137 Y05 9 3 3.00 2023 – 2023 1 SONEAR Wykrota-CEAMIG, Serra da Piedade
138 705 3 1 3.00 2004 – 2004 1 Apache Point
139 W98 3 1 3.00 2017 – 2017 1 Polonia Observatory, San Pedro de Atacama
140 Z84 3 1 3.00 2017 – 2017 1 Calar Alto-Schmidt
141 U55 3 1 3.00 2022 – 2022 1 Golden Ears Observatory, Maple Ridge
142 M11 3 1 3.00 2022 – 2022 1 Novaastro Observatory, Banon
143 566 3 1 3.00 1996 – 1996 1 Haleakala-NEAT/GEODSS
144 C77 3 1 3.00 2013 – 2013 1 Bernezzo Observatory
145 L01 3 1 3.00 2019 – 2019 1 Visnjan Observatory, Tican
146 W92 3 1 3.00 2023 – 2023 1 MASTER-OAFA Observatory, San Juan
147 E23 3 1 3.00 2023 – 2023 1 Arcadia
148 761 3 1 3.00 2001 – 2001 1 Zephyrhills
149 461 3 1 3.00 2013 – 2013 1 University of Szeged, Piszkesteto Stn. (Konkoly)
150 678 3 1 3.00 2000 – 2000 1 Fountain Hills
151 247 3 1 3.00 2023 – 2023 1 Roving Observer
152 143 3 1 3.00 2006 – 2006 1 Gnosca
153 G37 21 8 2.63 2014 – 2022 9 Lowell Discovery Telescope
154 095 5 2 2.50 1970 – 1987 18 Crimea-Nauchnyi
155 215 5 2 2.50 2005 – 2020 16 Buchloe
156 D35 7 3 2.33 2006 – 2008 3 Lulin Observatory
157 757 2 1 2.00 1999 – 1999 1 High Point
158 U69 2 1 2.00 2014 – 2014 1 iTelescope SRO Observatory, Auberry
159 697 2 1 2.00 2000 – 2000 1 Kitt Peak, McGraw-Hill
160 919 2 1 2.00 2000 – 2000 1 Desert Beaver Observatory
161 636 2 1 2.00 2002 – 2002 1 Essen
162 303 2 1 2.00 1994 – 1994 1 OAN de Llano del Hato, Merida
163 688 11 6 1.83 1982 – 2017 36 Lowell Observatory, Anderson Mesa Station
164 413 14 8 1.75 1990 – 1998 9 Siding Spring Observatory
165 T12 3 2 1.50 2018 – 2018 1 University of Hawaii 88-inch telescope, Maunakea
166 I02 4 4 1.00 1998 – 1998 1 Cerro Tololo Observatory, La Serena--2MASS
167 330 1 1 1.00 1964 – 1964 1 Purple Mountain Observatory, Nanking
168 078 1 1 1.00 1935 – 1935 1 Johannesburg
169 119 1 1 1.00 1994 – 1994 1 Abastuman
170 802 1 1 1.00 1894 – 1894 1 Harvard Observatory, Cambridge
171 094 1 1 1.00 1929 – 1929 1 Crimea-Simeiz
Sum 171 36350 359 101.25 1894 – 2025 132 171 names