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 03-08-2026
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 5641 262 21.53 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
32 691 665 15 44.33 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
35 303 2 1 2.00 1994 – 1994 1 OAN de Llano del Hato, Merida
36 119 1 1 1.00 1994 – 1994 1 Abastuman
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
51 703 221 8 27.63 1999 – 2023 25 Catalina Sky Survey
52 835 9 1 9.00 1999 – 1999 1 Drum Hill Station, Chelmsford
53 757 2 1 2.00 1999 – 1999 1 High Point
54 106 89 8 11.13 1999 – 2021 23 Crni Vrh
55 678 3 1 3.00 2000 – 2000 1 Fountain Hills
56 739 8 2 4.00 2000 – 2000 1 Sunflower Observatory, Olathe
57 309 136 21 6.48 2000 – 2022 23 Cerro Paranal
58 697 2 1 2.00 2000 – 2000 1 Kitt Peak, McGraw-Hill
59 919 2 1 2.00 2000 – 2000 1 Desert Beaver Observatory
60 926 53 7 7.57 2000 – 2014 15 Tenagra II Observatory, Nogales
61 732 15 3 5.00 2000 – 2000 1 Oaxaca
62 761 3 1 3.00 2001 – 2001 1 Zephyrhills
63 185 32 6 5.33 2001 – 2007 7 Observatoire Astronomique Jurassien-Vicques
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
68 938 8 2 4.00 2002 – 2021 20 Linhaceira
69 636 2 1 2.00 2002 – 2002 1 Essen
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 T14 3524 251 14.04 2003 – 2023 21 Canada-France-Hawaii Telescope, Maunakea
74 H29 6 1 6.00 2003 – 2003 1 Ivywood Observatory, Edmond
75 286 210 1 210.00 2003 – 2005 3 Yunnan Observatory
76 565 3 1 3.00 2004 – 2004 1 Bassano Bresciano
77 224 3 1 3.00 2004 – 2004 1 Ottmarsheim
78 705 3 1 3.00 2004 – 2004 1 Apache Point
79 415 2039 15 135.93 2004 – 2010 7 Kambah
80 599 12 2 6.00 2004 – 2004 1 Campo Imperatore-CINEOS
81 E12 40 6 6.67 2005 – 2011 7 Siding Spring Survey
82 215 5 2 2.50 2005 – 2020 16 Buchloe
83 A13 20 1 20.00 2005 – 2005 1 Observatoire Naef, Ependes
84 G96 541 18 30.06 2005 – 2025 21 Mt. Lemmon Survey
85 138 3 1 3.00 2005 – 2005 1 Village-Neuf
86 H06 47 9 5.22 2006 – 2013 8 iTelescope Observatory, Mayhill
87 D35 7 3 2.33 2006 – 2008 3 Lulin Observatory
88 213 12 4 3.00 2006 – 2007 2 Observatorio Montcabre
89 143 3 1 3.00 2006 – 2006 1 Gnosca
90 G92 14 3 4.67 2006 – 2006 1 Jarnac Observatory, Vail
91 B01 6 2 3.00 2007 – 2011 5 Taunus Observatory, Frankfurt
92 958 9 2 4.50 2007 – 2013 7 Observatoire de Dax
93 D29 647 13 49.77 2007 – 2025 19 Purple Mountain Observatory, XuYi Station
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
99 198 20 1 20.00 2010 – 2010 1 Wildberg
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 J04 9 2 4.50 2010 – 2015 6 ESA Optical Ground Station, Tenerife
103 G68 15 1 15.00 2010 – 2010 1 Sierra Stars Observatory, Markleeville
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 I77 8 1 8.00 2010 – 2010 1 CEAMIG-REA Observatory, Belo Horizonte
108 E07 559 17 32.88 2011 – 2015 5 Murrumbateman
109 F51 603 24 25.13 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 994 13 76.46 2011 – 2022 12 Calar Alto-CASADO
113 H21 7 2 3.50 2011 – 2012 2 Astronomical Research Observatory, Westfield
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 C77 3 1 3.00 2013 – 2013 1 Bernezzo Observatory
117 I89 46 7 6.57 2013 – 2013 1 iTelescope Observatory, Nerpio
118 461 3 1 3.00 2013 – 2013 1 University of Szeged, Piszkesteto Stn. (Konkoly)
119 W84 644 37 17.41 2013 – 2022 10 Cerro Tololo-DECam
120 K33 4 1 4.00 2013 – 2013 1 San Defendente
121 C95 47 9 5.22 2013 – 2020 8 SATINO Remote Observatory, Haute Provence
122 G84 6 1 6.00 2013 – 2013 1 Mount Lemmon SkyCenter
123 G37 21 8 2.63 2014 – 2022 9 Lowell Discovery Telescope
124 H07 8 1 8.00 2014 – 2014 1 7300 Observatory, Cloudcroft
125 Y00 45 7 6.43 2014 – 2022 9 SONEAR Observatory, Oliveira
126 V37 8 1 8.00 2014 – 2014 1 McDonald Observatory-LCO ELP
127 V30 9 2 4.50 2014 – 2014 1 Heaven on Earth Observatory, Mayhill
128 U69 2 1 2.00 2014 – 2014 1 iTelescope SRO Observatory, Auberry
129 G45 427 7 61.00 2014 – 2016 3 Space Surveillance Telescope, Atom Site
130 C41 10 3 3.33 2014 – 2015 2 MASTER-II Observatory, Kislovodsk
131 850 25 1 25.00 2014 – 2014 1 Cordell-Lorenz Observatory, Sewanee
132 G80 217 1 217.00 2015 – 2015 1 Sierra Remote Observatories, Auberry
133 F52 40 7 5.71 2015 – 2025 11 Pan-STARRS 2, Haleakala
134 G40 51 7 7.29 2015 – 2020 6 Slooh.com Canary Islands Observatory
135 W88 28 6 4.67 2015 – 2021 7 Slooh.com Chile Observatory, La Dehesa
136 T05 3149 10 314.90 2016 – 2025 10 ATLAS-HKO, Haleakala
137 Z22 12 3 4.00 2016 – 2017 2 MASTER-IAC Observatory, Tenerife
138 T09 166 37 4.49 2016 – 2024 9 Subaru Telescope, Maunakea
139 K95 10 2 5.00 2016 – 2017 2 MASTER-SAAO Observatory, Sutherland
140 Z80 56 8 7.00 2016 – 2023 8 Northolt Branch Observatory
141 T08 2845 11 258.64 2017 – 2025 9 ATLAS-MLO, Mauna Loa
142 118 5 1 5.00 2017 – 2017 1 Astronomical and Geophysical Observatory, Modra
143 W98 3 1 3.00 2017 – 2017 1 Polonia Observatory, San Pedro de Atacama
144 Z84 3 1 3.00 2017 – 2017 1 Calar Alto-Schmidt
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 I52 4 1 4.00 2019 – 2019 1 Steward Observatory, Mt. Lemmon Station
148 X74 12 4 3.00 2019 – 2020 2 Observatorio Campo dos Amarais
149 W76 13 3 4.33 2020 – 2022 3 CHILESCOPE Observatory, Rio Hurtado
150 K83 14 1 14.00 2020 – 2020 1 Osservatorio Astronomico Beppe Forti, Montelupo
151 G34 4 1 4.00 2021 – 2021 1 Oberfrauendorf
152 585 21 1 21.00 2021 – 2021 1 Kyiv comet station
153 V00 151 24 6.29 2021 – 2025 5 Kitt Peak-Bok
154 P07 554 7 79.14 2021 – 2024 4 Space Surveillance Telescope, HEH Station
155 W68 1025 8 128.13 2022 – 2025 4 ATLAS Chile, Rio Hurtado
156 M22 460 8 57.50 2022 – 2025 4 ATLAS South Africa, Sutherland
157 U55 3 1 3.00 2022 – 2022 1 Golden Ears Observatory, Maple Ridge
158 M11 3 1 3.00 2022 – 2022 1 Novaastro Observatory, Banon
159 W94 3 1 3.00 2022 – 2022 1 MAPS, San Pedro de Atacama
160 L51 3 1 3.00 2022 – 2022 1 MARGO, Nauchnyi
161 O18 14 3 4.67 2023 – 2025 3 WFST, Lenghu
162 Y05 9 3 3.00 2023 – 2023 1 SONEAR Wykrota-CEAMIG, Serra da Piedade
163 858 8 1 8.00 2023 – 2023 1 Tebbutt Observatory, Edgewood
164 247 3 1 3.00 2023 – 2023 1 Roving Observer
165 Y89 12 2 6.00 2023 – 2025 3 Proxima Centauri Observatory, Valdin
166 Z32 18 1 18.00 2023 – 2023 1 Observatorio Astrofisico de Javalambre
167 W92 3 1 3.00 2023 – 2023 1 MASTER-OAFA Observatory, San Juan
168 E23 3 1 3.00 2023 – 2023 1 Arcadia
169 269 24 7 3.43 2024 – 2025 2 Magellan-Baade Telescope
170 X09 6 1 6.00 2025 – 2025 1 Deep Random Survey, Rio Hurtado
171 R17 12 1 12.00 2025 – 2025 1 ATLAS-TDO
Sum 171 36350 359 101.25 1894 – 2025 132 171 names