MPC observations statistics

SATOBS - Observations of natural satellites

Sorted by first year of observation

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 10-26-2025
First year of observation of top 15 stations at Minor Planet Center for SATOBS class
First year of observation 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  
1 802 1 1 1.00 1894 – 1894 1 Harvard Observatory, Cambridge
2 800 16 2 8.00 1898 – 1899 2 Harvard Observatory, Arequipa
3 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
4 754 75 4 18.75 1904 – 1955 52 Yerkes Observatory, Williams Bay
5 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
6 000 180 4 45.00 1906 – 1910 5 Greenwich
7 024 14 3 4.67 1908 – 1909 2 Heidelberg-Konigstuhl
8 087 22 1 22.00 1911 – 1911 1 Helwan
9 672 199 8 24.88 1916 – 1951 36 Mount Wilson
10 690 23 3 7.67 1929 – 1981 53 Lowell Observatory, Flagstaff
11 094 1 1 1.00 1929 – 1929 1 Crimea-Simeiz
12 078 1 1 1.00 1935 – 1935 1 Johannesburg
13 822 17 2 8.50 1939 – 1952 14 Cordoba
14 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
15 074 8 1 8.00 1957 – 1957 1 Boyden Observatory, Bloemfontein
16 689 1306 8 163.25 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
17 760 4 1 4.00 1963 – 1970 8 Goethe Link Observatory, Brooklyn
18 330 1 1 1.00 1964 – 1964 1 Purple Mountain Observatory, Nanking
19 808 6 2 3.00 1965 – 1965 1 El Leoncito
20 693 25 6 4.17 1967 – 2000 34 Catalina Station, Tucson
21 673 459 9 51.00 1968 – 2017 50 Table Mountain Observatory, Wrightwood
22 695 157 29 5.41 1969 – 2014 46 Kitt Peak
23 095 5 2 2.50 1970 – 1987 18 Crimea-Nauchnyi
24 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
25 809 180 22 8.18 1981 – 2013 33 European Southern Observatory, La Silla
26 688 11 6 1.83 1982 – 2017 36 Lowell Observatory, Anderson Mesa Station
27 568 5625 262 21.47 1984 – 2023 40 Maunakea
28 071 9 1 9.00 1984 – 1984 1 NAO Rozhen, Smolyan
29 381 222 7 31.71 1986 – 1992 7 Tokyo-Kiso
30 888 14 1 14.00 1988 – 1989 2 Gekko
31 413 14 8 1.75 1990 – 1998 9 Siding Spring Observatory
32 691 662 15 44.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
33 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
34 365 9 2 4.50 1993 – 1993 1 Uto Observatory
35 119 1 1 1.00 1994 – 1994 1 Abastuman
36 303 2 1 2.00 1994 – 1994 1 OAN de Llano del Hato, Merida
37 566 3 1 3.00 1996 – 1996 1 Haleakala-NEAT/GEODSS
38 696 61 10 6.10 1997 – 2002 6 Whipple Observatory, Mt. Hopkins
39 910 3 1 3.00 1997 – 1997 1 Caussols-ODAS
40 950 78 19 4.11 1997 – 2011 15 La Palma
41 709 76 2 38.00 1997 – 1998 2 W & B Observatory, Cloudcroft
42 511 170 2 85.00 1998 – 1999 2 Haute Provence
43 B18 9 1 9.00 1998 – 1998 1 Terskol
44 829 4 1 4.00 1998 – 1998 1 Complejo Astronomico El Leoncito
45 I02 4 4 1.00 1998 – 1998 1 Cerro Tololo Observatory, La Serena--2MASS
46 699 193 8 24.13 1998 – 2006 9 Lowell Observatory-LONEOS
47 807 482 85 5.67 1998 – 2022 25 Cerro Tololo Observatory, La Serena
48 704 1663 9 184.78 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
49 133 12 1 12.00 1998 – 1998 1 Les Tardieux
50 120 23 2 11.50 1998 – 1999 2 Visnjan
51 835 9 1 9.00 1999 – 1999 1 Drum Hill Station, Chelmsford
52 703 221 8 27.63 1999 – 2023 25 Catalina Sky Survey
53 106 89 8 11.13 1999 – 2021 23 Crni Vrh
54 757 2 1 2.00 1999 – 1999 1 High Point
55 926 53 7 7.57 2000 – 2014 15 Tenagra II Observatory, Nogales
56 732 15 3 5.00 2000 – 2000 1 Oaxaca
57 697 2 1 2.00 2000 – 2000 1 Kitt Peak, McGraw-Hill
58 919 2 1 2.00 2000 – 2000 1 Desert Beaver Observatory
59 309 136 21 6.48 2000 – 2022 23 Cerro Paranal
60 678 3 1 3.00 2000 – 2000 1 Fountain Hills
61 739 8 2 4.00 2000 – 2000 1 Sunflower Observatory, Olathe
62 185 32 6 5.33 2001 – 2007 7 Observatoire Astronomique Jurassien-Vicques
63 761 3 1 3.00 2001 – 2001 1 Zephyrhills
64 608 126 7 18.00 2001 – 2005 5 Haleakala-AMOS
65 493 68 9 7.56 2001 – 2002 2 Calar Alto
66 644 254 11 23.09 2001 – 2006 6 Palomar Mountain/NEAT
67 304 598 72 8.31 2002 – 2023 22 Las Campanas Observatory
68 636 2 1 2.00 2002 – 2002 1 Essen
69 938 8 2 4.00 2002 – 2021 20 Linhaceira
70 333 58 6 9.67 2003 – 2005 3 Desert Eagle Observatory
71 291 72 10 7.20 2003 – 2010 8 LPL/Spacewatch II
72 337 115 1 115.00 2003 – 2004 2 Sheshan
73 286 210 1 210.00 2003 – 2005 3 Yunnan Observatory
74 H29 6 1 6.00 2003 – 2003 1 Ivywood Observatory, Edmond
75 T14 2630 219 12.01 2003 – 2023 21 Canada-France-Hawaii Telescope, Maunakea
76 415 2039 15 135.93 2004 – 2010 7 Kambah
77 565 3 1 3.00 2004 – 2004 1 Bassano Bresciano
78 224 3 1 3.00 2004 – 2004 1 Ottmarsheim
79 705 3 1 3.00 2004 – 2004 1 Apache Point
80 599 12 2 6.00 2004 – 2004 1 Campo Imperatore-CINEOS
81 215 5 2 2.50 2005 – 2020 16 Buchloe
82 138 3 1 3.00 2005 – 2005 1 Village-Neuf
83 A13 20 1 20.00 2005 – 2005 1 Observatoire Naef, Ependes
84 G96 513 17 30.18 2005 – 2025 21 Mt. Lemmon Survey
85 E12 40 6 6.67 2005 – 2011 7 Siding Spring Survey
86 213 12 4 3.00 2006 – 2007 2 Observatorio Montcabre
87 D35 7 3 2.33 2006 – 2008 3 Lulin Observatory
88 H06 47 9 5.22 2006 – 2013 8 iTelescope Observatory, Mayhill
89 G92 14 3 4.67 2006 – 2006 1 Jarnac Observatory, Vail
90 143 3 1 3.00 2006 – 2006 1 Gnosca
91 B01 6 2 3.00 2007 – 2011 5 Taunus Observatory, Frankfurt
92 D29 644 13 49.54 2007 – 2025 19 Purple Mountain Observatory, XuYi Station
93 958 9 2 4.50 2007 – 2013 7 Observatoire de Dax
94 683 4 1 4.00 2008 – 2008 1 Goodricke-Pigott Observatory, Tucson
95 A50 13 2 6.50 2008 – 2011 4 Andrushivka Astronomical Observatory
96 J37 9 3 3.00 2008 – 2011 4 Huelva
97 H01 4 1 4.00 2009 – 2009 1 Magdalena Ridge Observatory, Socorro
98 J75 48 5 9.60 2009 – 2011 3 OAM Observatory, La Sagra
99 G68 15 1 15.00 2010 – 2010 1 Sierra Stars Observatory, Markleeville
100 H15 27 4 6.75 2010 – 2017 8 ISON-NM Observatory, Mayhill
101 H82 6 1 6.00 2010 – 2010 1 CBA-NOVAC Observatory, Front Royal
102 I77 8 1 8.00 2010 – 2010 1 CEAMIG-REA Observatory, Belo Horizonte
103 J04 9 2 4.50 2010 – 2015 6 ESA Optical Ground Station, Tenerife
104 C51 275 10 27.50 2010 – 2024 15 WISE
105 E10 7 2 3.50 2010 – 2010 1 Siding Spring-Faulkes Telescope South
106 I41 379 10 37.90 2010 – 2024 15 Palomar Mountain--ZTF
107 198 20 1 20.00 2010 – 2010 1 Wildberg
108 H21 7 2 3.50 2011 – 2012 2 Astronomical Research Observatory, Westfield
109 F51 600 24 25.00 2011 – 2024 14 Pan-STARRS 1, Haleakala
110 C73 11 2 5.50 2011 – 2013 3 Galati Observatory
111 J43 136 8 17.00 2011 – 2024 14 Oukaimeden Observatory, Marrakech
112 G36 985 11 89.55 2011 – 2022 12 Calar Alto-CASADO
113 E07 559 17 32.88 2011 – 2015 5 Murrumbateman
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
116 461 3 1 3.00 2013 – 2013 1 University of Szeged, Piszkesteto Stn. (Konkoly)
117 I89 46 7 6.57 2013 – 2013 1 iTelescope Observatory, Nerpio
118 K33 4 1 4.00 2013 – 2013 1 San Defendente
119 C77 3 1 3.00 2013 – 2013 1 Bernezzo Observatory
120 W84 630 37 17.03 2013 – 2022 10 Cerro Tololo-DECam
121 G84 6 1 6.00 2013 – 2013 1 Mount Lemmon SkyCenter
122 C95 47 9 5.22 2013 – 2020 8 SATINO Remote Observatory, Haute Provence
123 U69 2 1 2.00 2014 – 2014 1 iTelescope SRO Observatory, Auberry
124 V37 8 1 8.00 2014 – 2014 1 McDonald Observatory-LCO ELP
125 Y00 45 7 6.43 2014 – 2022 9 SONEAR Observatory, Oliveira
126 850 25 1 25.00 2014 – 2014 1 Cordell-Lorenz Observatory, Sewanee
127 G45 427 7 61.00 2014 – 2016 3 Space Surveillance Telescope, Atom Site
128 V30 9 2 4.50 2014 – 2014 1 Heaven on Earth Observatory, Mayhill
129 C41 10 3 3.33 2014 – 2015 2 MASTER-II Observatory, Kislovodsk
130 H07 8 1 8.00 2014 – 2014 1 7300 Observatory, Cloudcroft
131 G37 21 8 2.63 2014 – 2022 9 Lowell Discovery Telescope
132 G40 51 7 7.29 2015 – 2020 6 Slooh.com Canary Islands Observatory
133 W88 28 6 4.67 2015 – 2021 7 Slooh.com Chile Observatory, La Dehesa
134 F52 33 6 5.50 2015 – 2024 10 Pan-STARRS 2, Haleakala
135 G80 217 1 217.00 2015 – 2015 1 Sierra Remote Observatories, Auberry
136 K95 10 2 5.00 2016 – 2017 2 MASTER-SAAO Observatory, Sutherland
137 Z80 56 8 7.00 2016 – 2023 8 Northolt Branch Observatory
138 T05 3129 10 312.90 2016 – 2025 10 ATLAS-HKO, Haleakala
139 Z22 12 3 4.00 2016 – 2017 2 MASTER-IAC Observatory, Tenerife
140 T09 19 3 6.33 2016 – 2021 6 Subaru Telescope, Maunakea
141 118 5 1 5.00 2017 – 2017 1 Astronomical and Geophysical Observatory, Modra
142 W98 3 1 3.00 2017 – 2017 1 Polonia Observatory, San Pedro de Atacama
143 Z84 3 1 3.00 2017 – 2017 1 Calar Alto-Schmidt
144 T08 2841 11 258.27 2017 – 2025 9 ATLAS-MLO, Mauna Loa
145 T12 3 2 1.50 2018 – 2018 1 University of Hawaii 88-inch telescope, Maunakea
146 L01 3 1 3.00 2019 – 2019 1 Visnjan Observatory, Tican
147 X74 12 4 3.00 2019 – 2020 2 Observatorio Campo dos Amarais
148 I52 4 1 4.00 2019 – 2019 1 Steward Observatory, Mt. Lemmon Station
149 W76 13 3 4.33 2020 – 2022 3 CHILESCOPE Observatory, Rio Hurtado
150 K83 14 1 14.00 2020 – 2020 1 Beppe Forti Astronomical Observatory, Montelupo
151 V00 52 6 8.67 2021 – 2025 5 Kitt Peak-Bok
152 585 21 1 21.00 2021 – 2021 1 Kyiv comet station
153 P07 554 7 79.14 2021 – 2024 4 Space Surveillance Telescope, HEH Station
154 G34 4 1 4.00 2021 – 2021 1 Oberfrauendorf
155 M11 3 1 3.00 2022 – 2022 1 Novaastro Observatory, Banon
156 W94 3 1 3.00 2022 – 2022 1 MAPS, San Pedro de Atacama
157 L51 3 1 3.00 2022 – 2022 1 MARGO, Nauchnyi
158 M22 460 8 57.50 2022 – 2025 4 ATLAS South Africa, Sutherland
159 W68 1025 8 128.13 2022 – 2025 4 ATLAS Chile, Rio Hurtado
160 U55 3 1 3.00 2022 – 2022 1 Golden Ears Observatory, Maple Ridge
161 E23 3 1 3.00 2023 – 2023 1 Arcadia
162 Z32 18 1 18.00 2023 – 2023 1 Observatorio Astrofisico de Javalambre
163 O18 6 2 3.00 2023 – 2023 1 WFST, Lenghu
164 858 8 1 8.00 2023 – 2023 1 Tebbutt Observatory, Edgewood
165 Y05 9 3 3.00 2023 – 2023 1 SONEAR Wykrota-CEAMIG, Serra da Piedade
166 Y89 9 2 4.50 2023 – 2023 1 Proxima Centauri Observatory, Valdin
167 W92 3 1 3.00 2023 – 2023 1 MASTER-OAFA Observatory, San Juan
Sum 167 35047 359 97.62 1894 – 2025 132 167 names