MPC observations statistics

SATOBS - Observations of natural satellites

Sorted by years span 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 02-09-2025
Year range of observations of top 15 stations at Minor Planet Center for SATOBS class
Year range 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  
1 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
2 689 1305 8 163.13 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
3 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
4 690 23 3 7.67 1929 – 1981 53 Lowell Observatory, Flagstaff
5 754 75 4 18.75 1904 – 1955 52 Yerkes Observatory, Williams Bay
6 673 457 9 50.78 1968 – 2017 50 Table Mountain Observatory, Wrightwood
7 695 157 29 5.41 1969 – 2014 46 Kitt Peak
8 568 5280 217 24.33 1984 – 2023 40 Maunakea
9 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
10 688 11 6 1.83 1982 – 2017 36 Lowell Observatory, Anderson Mesa Station
11 672 199 8 24.88 1916 – 1951 36 Mount Wilson
12 693 25 6 4.17 1967 – 2000 34 Catalina Station, Tucson
13 809 180 22 8.18 1981 – 2013 33 European Southern Observatory, La Silla
14 691 662 15 44.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
15 807 470 83 5.66 1998 – 2022 25 Cerro Tololo Observatory, La Serena
16 703 199 8 24.88 1999 – 2022 24 Catalina Sky Survey
17 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
18 106 89 8 11.13 1999 – 2021 23 Crni Vrh
19 309 136 21 6.48 2000 – 2022 23 Cerro Paranal
20 304 579 68 8.51 2002 – 2023 22 Las Campanas Observatory
21 T14 558 88 6.34 2003 – 2023 21 Canada-France-Hawaii Telescope, Maunakea
22 938 8 2 4.00 2002 – 2021 20 Linhaceira
23 095 5 2 2.50 1970 – 1987 18 Crimea-Nauchnyi
24 G96 374 17 22.00 2005 – 2022 18 Mt. Lemmon Survey
25 215 5 2 2.50 2005 – 2020 16 Buchloe
26 704 1662 9 184.67 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
27 D29 500 12 41.67 2007 – 2022 16 Purple Mountain Observatory, XuYi Station
28 926 53 7 7.57 2000 – 2014 15 Tenagra II Observatory, Nogales
29 950 78 19 4.11 1997 – 2011 15 La Palma
30 822 17 2 8.50 1939 – 1952 14 Cordoba
31 C51 271 10 27.10 2010 – 2022 13 WISE
32 I41 364 10 36.40 2010 – 2022 13 Palomar Mountain--ZTF
33 F51 578 22 26.27 2011 – 2022 12 Pan-STARRS 1, Haleakala
34 W84 611 35 17.46 2013 – 2022 10 Cerro Tololo-DECam
35 413 14 8 1.75 1990 – 1998 9 Siding Spring Observatory
36 699 193 8 24.13 1998 – 2006 9 Lowell Observatory-LONEOS
37 Y00 42 7 6.00 2014 – 2022 9 SONEAR Observatory, Oliveira
38 G37 21 8 2.63 2014 – 2022 9 Lowell Discovery Telescope
39 J43 133 8 16.63 2011 – 2018 8 Oukaimeden Observatory, Marrakech
40 291 72 10 7.20 2003 – 2010 8 LPL/Spacewatch II
41 G36 915 11 83.18 2011 – 2018 8 Calar Alto-CASADO
42 C95 47 9 5.22 2013 – 2020 8 SATINO Remote Observatory, Haute Provence
43 H15 27 4 6.75 2010 – 2017 8 ISON-NM Observatory, Mayhill
44 760 4 1 4.00 1963 – 1970 8 Goethe Link Observatory, Brooklyn
45 H06 47 9 5.22 2006 – 2013 8 iTelescope Observatory, Mayhill
46 F52 15 3 5.00 2015 – 2022 8 Pan-STARRS 2, Haleakala
47 958 9 2 4.50 2007 – 2013 7 Observatoire de Dax
48 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
49 E12 40 6 6.67 2005 – 2011 7 Siding Spring Survey
50 185 32 6 5.33 2001 – 2007 7 Observatoire Astronomique Jurassien-Vicques
51 381 222 7 31.71 1986 – 1992 7 Tokyo-Kiso
52 W88 27 6 4.50 2015 – 2021 7 Slooh.com Chile Observatory, La Dehesa
53 415 2035 15 135.67 2004 – 2010 7 Kambah
54 T05 1798 10 179.80 2016 – 2022 7 ATLAS-HKO, Haleakala
55 J04 9 2 4.50 2010 – 2015 6 ESA Optical Ground Station, Tenerife
56 696 61 10 6.10 1997 – 2002 6 Whipple Observatory, Mt. Hopkins
57 G40 50 7 7.14 2015 – 2020 6 Slooh.com Canary Islands Observatory
58 Z80 52 8 6.50 2016 – 2021 6 Northolt Branch Observatory
59 644 248 11 22.55 2001 – 2006 6 Palomar Mountain/NEAT
60 T08 1975 11 179.55 2017 – 2022 6 ATLAS-MLO, Mauna Loa
61 B01 6 2 3.00 2007 – 2011 5 Taunus Observatory, Frankfurt
62 608 126 7 18.00 2001 – 2005 5 Haleakala-AMOS
63 E07 558 17 32.82 2011 – 2015 5 Murrumbateman
64 000 181 4 45.25 1906 – 1910 5 Greenwich
65 J37 9 3 3.00 2008 – 2011 4 Huelva
66 A50 13 2 6.50 2008 – 2011 4 Andrushivka Astronomical Observatory
67 J75 48 5 9.60 2009 – 2011 3 OAM Observatory, La Sagra
68 286 210 1 210.00 2003 – 2005 3 Yunnan Observatory
69 C73 11 2 5.50 2011 – 2013 3 Galati Observatory
70 G45 426 7 60.86 2014 – 2016 3 Space Surveillance Telescope, Atom Site
71 333 58 6 9.67 2003 – 2005 3 Desert Eagle Observatory
72 D35 7 3 2.33 2006 – 2008 3 Lulin Observatory
73 W76 13 3 4.33 2020 – 2022 3 CHILESCOPE Observatory, Rio Hurtado
74 120 23 2 11.50 1998 – 1999 2 Visnjan
75 337 115 1 115.00 2003 – 2004 2 Sheshan, formerly Zo-Se
76 C41 10 3 3.33 2014 – 2015 2 MASTER-II Observatory, Kislovodsk
77 H21 7 2 3.50 2011 – 2012 2 Astronomical Research Observatory, Westfield
78 709 76 2 38.00 1997 – 1998 2 W & B Observatory, Cloudcroft
79 493 68 9 7.56 2001 – 2002 2 Calar Alto
80 511 170 2 85.00 1998 – 1999 2 Haute Provence
81 888 14 1 14.00 1988 – 1989 2 Gekko
82 K95 10 2 5.00 2016 – 2017 2 MASTER-SAAO Observatory, Sutherland
83 024 14 3 4.67 1908 – 1909 2 Heidelberg-Konigstuhl
84 Z22 12 3 4.00 2016 – 2017 2 MASTER-IAC Observatory, Tenerife
85 800 16 2 8.00 1898 – 1899 2 Harvard Observatory, Arequipa
86 X74 12 4 3.00 2019 – 2020 2 Observatorio Campo dos Amarais
87 213 12 4 3.00 2006 – 2007 2 Observatorio Montcabre
88 W68 269 7 38.43 2022 – 2023 2 ATLAS Chile, Rio Hurtado
89 M22 164 6 27.33 2022 – 2023 2 ATLAS South Africa, Sutherland
90 143 3 1 3.00 2006 – 2006 1 Gnosca
91 732 15 3 5.00 2000 – 2000 1 Oaxaca
92 919 2 1 2.00 2000 – 2000 1 Desert Beaver Observatory
93 566 3 1 3.00 1996 – 1996 1 Haleakala-NEAT/GEODSS
94 739 8 2 4.00 2000 – 2000 1 Sunflower Observatory, Olathe
95 683 4 1 4.00 2008 – 2008 1 Goodricke-Pigott Observatory, Tucson
96 697 2 1 2.00 2000 – 2000 1 Kitt Peak, McGraw-Hill
97 678 3 1 3.00 2000 – 2000 1 Fountain Hills
98 H01 4 1 4.00 2009 – 2009 1 Magdalena Ridge Observatory, Socorro
99 H82 6 1 6.00 2010 – 2010 1 CBA-NOVAC Observatory, Front Royal
100 808 6 2 3.00 1965 – 1965 1 El Leoncito
101 802 1 1 1.00 1894 – 1894 1 Harvard Observatory, Cambridge
102 G68 15 1 15.00 2010 – 2010 1 Sierra Stars Observatory, Markleeville
103 198 20 1 20.00 2010 – 2010 1 Wildberg
104 910 3 1 3.00 1997 – 1997 1 Caussols-ODAS
105 E10 7 2 3.50 2010 – 2010 1 Siding Spring-Faulkes Telescope South
106 071 9 1 9.00 1984 – 1984 1 NAO Rozhen, Smolyan
107 I77 8 1 8.00 2010 – 2010 1 CEAMIG-REA Observatory, Belo Horizonte
108 761 3 1 3.00 2001 – 2001 1 Zephyrhills
109 636 2 1 2.00 2002 – 2002 1 Essen
110 094 1 1 1.00 1929 – 1929 1 Crimea-Simeiz
111 074 8 1 8.00 1957 – 1957 1 Boyden Observatory, Bloemfontein
112 B18 9 1 9.00 1998 – 1998 1 Terskol
113 I02 4 4 1.00 1998 – 1998 1 Cerro Tololo Observatory, La Serena--2MASS
114 D00 8 2 4.00 2012 – 2012 1 ASC-Kislovodsk Observatory
115 300 7 1 7.00 2012 – 2012 1 Bisei Spaceguard Center-BATTeRS
116 829 4 1 4.00 1998 – 1998 1 Complejo Astronomico El Leoncito
117 C77 3 1 3.00 2013 – 2013 1 Bernezzo Observatory
118 G84 6 1 6.00 2013 – 2013 1 Mount Lemmon SkyCenter
119 461 3 1 3.00 2013 – 2013 1 University of Szeged, Piszkesteto Stn. (Konkoly)
120 K33 4 1 4.00 2013 – 2013 1 San Defendente
121 087 22 1 22.00 1911 – 1911 1 Helwan
122 I89 46 7 6.57 2013 – 2013 1 iTelescope Observatory, Nerpio
123 H29 6 1 6.00 2003 – 2003 1 Ivywood Observatory, Edmond
124 H07 8 1 8.00 2014 – 2014 1 7300 Observatory, Cloudcroft
125 078 1 1 1.00 1935 – 1935 1 Johannesburg
126 U69 1 1 1.00 2014 – 2014 1 iTelescope SRO Observatory, Auberry
127 850 25 1 25.00 2014 – 2014 1 Cordell-Lorenz Observatory, Sewanee
128 V30 9 2 4.50 2014 – 2014 1 Heaven on Earth Observatory, Mayhill
129 705 3 1 3.00 2004 – 2004 1 Apache Point
130 V37 8 1 8.00 2014 – 2014 1 McDonald Observatory-LCO ELP
131 599 12 2 6.00 2004 – 2004 1 Campo Imperatore-CINEOS
132 133 12 1 12.00 1998 – 1998 1 Les Tardieux
133 565 3 1 3.00 2004 – 2004 1 Bassano Bresciano
134 G80 217 1 217.00 2015 – 2015 1 Sierra Remote Observatories, Auberry
135 224 3 1 3.00 2004 – 2004 1 Ottmarsheim
136 330 1 1 1.00 1964 – 1964 1 Purple Mountain Observatory, Nanking
137 A13 20 1 20.00 2005 – 2005 1 Observatoire Naef, Ependes
138 365 9 2 4.50 1993 – 1993 1 Uto Observatory
139 138 3 1 3.00 2005 – 2005 1 Village-Neuf
140 Z84 3 1 3.00 2017 – 2017 1 Calar Alto-Schmidt
141 W98 3 1 3.00 2017 – 2017 1 Polonia Observatory, San Pedro de Atacama
142 835 9 1 9.00 1999 – 1999 1 Drum Hill Station, Chelmsford
143 118 5 1 5.00 2017 – 2017 1 Astronomical and Geophysical Observatory, Modra
144 T09 8 2 4.00 2017 – 2017 1 Subaru Telescope, Maunakea
145 T12 3 2 1.50 2018 – 2018 1 University of Hawaii 88-inch telescope, Maunakea
146 I52 4 1 4.00 2019 – 2019 1 Steward Observatory, Mt. Lemmon Station
147 G92 14 3 4.67 2006 – 2006 1 Jarnac Observatory, Vail
148 L01 3 1 3.00 2019 – 2019 1 Visnjan Observatory, Tican
149 K83 14 1 14.00 2020 – 2020 1 Beppe Forti Astronomical Observatory, Montelupo
150 303 2 1 2.00 1994 – 1994 1 OAN de Llano del Hato, Merida
151 V00 16 4 4.00 2021 – 2021 1 Kitt Peak-Bok
152 G34 4 1 4.00 2021 – 2021 1 Oberfrauendorf
153 757 2 1 2.00 1999 – 1999 1 High Point
154 P07 11 2 5.50 2022 – 2022 1 Space Surveillance Telescope, HEH Station
155 M11 3 1 3.00 2022 – 2022 1 Novaastro Observatory, Banon
156 W94 3 1 3.00 2022 – 2022 1 MAP, San Pedro de Atacama
157 L51 3 1 3.00 2022 – 2022 1 MARGO, Nauchnyi
158 119 1 1 1.00 1994 – 1994 1 Abastuman
Sum 158 28199 229 123.14 1894 – 2023 130 158 names