MPC observations statistics

Please note, that you see here only the Top 15 of all objects, so the sum for all stations at end is higher.

SATOBS - Observations of natural satellites

Sorted by number of observations

Click at right image for a histogram of the top 15 values.
Number 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  
1 568 5696 272 20.94 1984 – 2023 40 Maunakea
2 T14 3812 271 14.07 2003 – 2023 21 Canada-France-Hawaii Telescope, Maunakea
3 T05 3177 10 317.70 2016 – 2025 10 ATLAS-HKO, Haleakala
4 T08 2864 11 260.36 2017 – 2025 9 ATLAS-MLO, Mauna Loa
5 415 2039 15 135.93 2004 – 2010 7 Kambah
6 704 1663 9 184.78 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
7 689 1306 8 163.25 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
8 W68 1025 8 128.13 2022 – 2025 4 ATLAS Chile, Rio Hurtado
9 G36 994 13 76.46 2011 – 2022 12 Calar Alto-CASADO
10 304 717 88 8.15 2002 – 2023 22 Las Campanas Observatory
11 D29 680 13 52.31 2007 – 2025 19 Purple Mountain Observatory, XuYi Station
12 691 668 15 44.53 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
13 W84 650 38 17.11 2013 – 2022 10 Cerro Tololo-DECam
14 F51 603 24 25.13 2011 – 2024 14 Pan-STARRS 1, Haleakala
15 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
Sum 194 37298 395 94.43 1894 – 2026 133 194 names

SATOBS - Observations of natural satellites

Sorted by number of observed objects

Click at right image for a histogram of the top 15 values.
Number of objects 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  
1 568 5696 272 20.94 1984 – 2023 40 Maunakea
2 T14 3812 271 14.07 2003 – 2023 21 Canada-France-Hawaii Telescope, Maunakea
3 807 560 97 5.77 1998 – 2022 25 Cerro Tololo Observatory, La Serena
4 304 717 88 8.15 2002 – 2023 22 Las Campanas Observatory
5 T09 222 48 4.63 2016 – 2025 10 Subaru Telescope, Maunakea
6 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
7 W84 650 38 17.11 2013 – 2022 10 Cerro Tololo-DECam
8 695 157 29 5.41 1969 – 2014 46 Kitt Peak
9 269 115 27 4.26 2024 – 2026 3 Magellan-Baade Telescope
10 V00 155 24 6.46 2021 – 2025 5 Kitt Peak-Bok
11 F51 603 24 25.13 2011 – 2024 14 Pan-STARRS 1, Haleakala
12 809 180 22 8.18 1981 – 2013 33 European Southern Observatory, La Silla
13 309 136 21 6.48 2000 – 2022 23 Cerro Paranal
14 950 78 19 4.11 1997 – 2011 15 La Palma
15 G96 549 18 30.50 2005 – 2025 21 University of Arizona Mt. Lemmon Survey
Sum 194 37298 395 94.43 1894 – 2026 133 194 names

SATOBS - Observations of natural satellites

Sorted by observations per object

Click at right image for a histogram of the top 15 values.
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
Sum 194 37298 395 94.43 1894 – 2026 133 194 names

SATOBS - Observations of natural satellites

Sorted by first year of observation

Click at right image for a histogram of the top 15 values.
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
Sum 194 37298 395 94.43 1894 – 2026 133 194 names

SATOBS - Observations of natural satellites

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
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 1306 8 163.25 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
6 673 459 9 51.00 1968 – 2017 50 Table Mountain Observatory, Wrightwood
7 695 157 29 5.41 1969 – 2014 46 Kitt Peak
8 568 5696 272 20.94 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
14 691 668 15 44.53 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
15 807 560 97 5.77 1998 – 2022 25 Cerro Tololo Observatory, La Serena
Sum 194 37298 395 94.43 1894 – 2026 133 194 names

ARTSAT - Observations of artifical satellites

Sorted by number of observations

Click at right image for a histogram of the top 15 values.
Number of observations of top 15 stations at Minor Planet Center for ARTSAT class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 C40 9626 2 4813.00 2012 – 2017 6 Kuban State University Astrophysical Observatory
2 H06 4740 16 296.25 2005 – 2018 14 iTelescope Observatory, Mayhill
3 Y00 2484 121 20.53 2014 – 2018 5 SONEAR Observatory, Oliveira
4 703 2194 60 36.57 2003 – 2018 16 University of Arizona Catalina Sky Survey
5 Q62 1662 9 184.67 2013 – 2018 6 iTelescope Observatory, Siding Spring
6 J95 1485 45 33.00 2002 – 2018 17 Great Shefford
7 G45 1271 1 1271.00 2015 – 2015 1 Space Surveillance Telescope, Atom Site
8 G96 971 47 20.66 2005 – 2018 14 University of Arizona Mt. Lemmon Survey
9 C41 823 2 411.50 2014 – 2015 2 MASTER-II Observatory, Kislovodsk
10 J75 793 13 61.00 2007 – 2013 7 OAM Observatory, La Sagra
11 E12 552 28 19.71 2004 – 2012 9 Siding Spring Survey
12 510 462 2 231.00 2011 – 2015 5 Siegen
13 Z66 363 2 181.50 2015 – 2018 4 DeSS Deimos Sky Survey, Niefla Mountain
14 620 276 4 69.00 2002 – 2008 7 Observatorio Astronomico de Mallorca
15 C95 266 7 38.00 2013 – 2018 6 SATINO Remote Observatory, Haute Provence
Sum 195 34172 199 171.72 2000 – 2018 19 195 names

ARTSAT - Observations of artifical satellites

Sorted by number of observed objects

Click at right image for a histogram of the top 15 values.
Number of objects of top 15 stations at Minor Planet Center for ARTSAT class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 Y00 2484 121 20.53 2014 – 2018 5 SONEAR Observatory, Oliveira
2 703 2194 60 36.57 2003 – 2018 16 University of Arizona Catalina Sky Survey
3 G96 971 47 20.66 2005 – 2018 14 University of Arizona Mt. Lemmon Survey
4 J95 1485 45 33.00 2002 – 2018 17 Great Shefford
5 E12 552 28 19.71 2004 – 2012 9 Siding Spring Survey
6 H01 200 19 10.53 2007 – 2018 12 Magdalena Ridge Observatory, Socorro
7 F51 262 17 15.41 2010 – 2018 9 Pan-STARRS 1, Haleakala
8 204 131 17 7.71 2006 – 2018 13 Schiaparelli Observatory
9 H06 4740 16 296.25 2005 – 2018 14 iTelescope Observatory, Mayhill
10 J75 793 13 61.00 2007 – 2013 7 OAM Observatory, La Sagra
11 291 79 13 6.08 2006 – 2018 13 LPL/Spacewatch II
12 I52 80 12 6.67 2015 – 2018 4 Steward Observatory, Mt. Lemmon Station
13 F85 157 11 14.27 2007 – 2009 3 Tiki Observatory, Punaauia
14 300 88 9 9.78 2000 – 2015 16 Bisei Spaceguard Center-BATTeRS
15 Q62 1662 9 184.67 2013 – 2018 6 iTelescope Observatory, Siding Spring
Sum 195 34172 199 171.72 2000 – 2018 19 195 names

ARTSAT - Observations of artifical satellites

Sorted by observations per object

Click at right image for a histogram of the top 15 values.
Part of observations per object of top 15 stations at Minor Planet Center for ARTSAT class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 C40 9626 2 4813.00 2012 – 2017 6 Kuban State University Astrophysical Observatory
2 G45 1271 1 1271.00 2015 – 2015 1 Space Surveillance Telescope, Atom Site
3 C41 823 2 411.50 2014 – 2015 2 MASTER-II Observatory, Kislovodsk
4 H06 4740 16 296.25 2005 – 2018 14 iTelescope Observatory, Mayhill
5 561 260 1 260.00 2010 – 2011 2 Piszkesteto Stn. (Konkoly)
6 510 462 2 231.00 2011 – 2015 5 Siegen
7 Q62 1662 9 184.67 2013 – 2018 6 iTelescope Observatory, Siding Spring
8 Z66 363 2 181.50 2015 – 2018 4 DeSS Deimos Sky Survey, Niefla Mountain
9 033 96 1 96.00 2014 – 2015 2 Karl Schwarzschild Observatory, Tautenburg
10 565 81 1 81.00 2011 – 2011 1 Bassano Bresciano
11 C32 78 1 78.00 2011 – 2011 1 Ka-Dar Observatory, TAU Station, Nizhny Arkhyz
12 620 276 4 69.00 2002 – 2008 7 Observatorio Astronomico de Mallorca
13 J75 793 13 61.00 2007 – 2013 7 OAM Observatory, La Sagra
14 168 61 1 61.00 2014 – 2014 1 Kourovskaya
15 958 182 3 60.67 2013 – 2014 2 Observatoire de Dax
Sum 195 34172 199 171.72 2000 – 2018 19 195 names

ARTSAT - Observations of artifical satellites

Sorted by first year of observation

Click at right image for a histogram of the top 15 values.
First year of observation of top 15 stations at Minor Planet Center for ARTSAT class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 413 112 6 18.67 2000 – 2005 6 Siding Spring Observatory
2 300 88 9 9.78 2000 – 2015 16 Bisei Spaceguard Center-BATTeRS
3 422 25 3 8.33 2000 – 2003 4 Loomberah
4 046 15 1 15.00 2001 – 2001 1 Klet Observatory, Ceske Budejovice
5 734 44 3 14.67 2001 – 2007 7 Farpoint Observatory, Eskridge
6 649 37 3 12.33 2001 – 2004 4 Powell Observatory, Louisburg
7 151 10 1 10.00 2001 – 2001 1 Eschenberg Observatory, Winterthur
8 817 10 1 10.00 2001 – 2001 1 Sudbury
9 611 171 8 21.38 2001 – 2009 9 Starkenburg Sternwarte, Heppenheim
10 691 74 8 9.25 2001 – 2018 18 Steward Observatory, Kitt Peak-Spacewatch
11 557 213 6 35.50 2001 – 2015 15 Ondrejov
12 587 41 5 8.20 2001 – 2010 10 Sormano
13 670 8 1 8.00 2001 – 2001 1 Camarillo
14 596 8 1 8.00 2001 – 2001 1 Colleverde di Guidonia
15 859 19 3 6.33 2001 – 2004 4 Wykrota Observatory-CEAMIG
Sum 195 34172 199 171.72 2000 – 2018 19 195 names

ARTSAT - Observations of artifical satellites

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
Year range of observations of top 15 stations at Minor Planet Center for ARTSAT class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 691 74 8 9.25 2001 – 2018 18 Steward Observatory, Kitt Peak-Spacewatch
2 595 41 7 5.86 2001 – 2018 18 Farra d'Isonzo
3 926 41 7 5.86 2001 – 2017 17 Tenagra II Observatory, Nogales
4 J95 1485 45 33.00 2002 – 2018 17 Great Shefford
5 300 88 9 9.78 2000 – 2015 16 Bisei Spaceguard Center-BATTeRS
6 703 2194 60 36.57 2003 – 2018 16 University of Arizona Catalina Sky Survey
7 557 213 6 35.50 2001 – 2015 15 Ondrejov
8 900 30 7 4.29 2001 – 2015 15 Moriyama
9 705 14 2 7.00 2004 – 2018 15 Apache Point
10 G96 971 47 20.66 2005 – 2018 14 University of Arizona Mt. Lemmon Survey
11 H06 4740 16 296.25 2005 – 2018 14 iTelescope Observatory, Mayhill
12 970 40 5 8.00 2005 – 2017 13 Chelmsford
13 246 26 3 8.67 2005 – 2017 13 Klet Observatory-KLENOT
14 204 131 17 7.71 2006 – 2018 13 Schiaparelli Observatory
15 291 79 13 6.08 2006 – 2018 13 LPL/Spacewatch II
Sum 195 34172 199 171.72 2000 – 2018 19 195 names

CMTOBS - Observations of comets

Sorted by number of observations

Click at right image for a histogram of the top 15 values.
Number of observations of top 15 stations at Minor Planet Center for CMTOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 T05 48468 615 78.81 2015 – 2026 12 ATLAS-HKO, Haleakala
2 T08 44702 567 78.84 2017 – 2026 10 ATLAS-MLO, Mauna Loa
3 249 37004 1991 18.59 1996 – 2025 30 SOHO
4 585 34450 576 59.81 1986 – 2026 41 Kyiv comet station
5 C23 32934 594 55.44 2010 – 2026 17 Olmen
6 349 31067 1013 30.67 1999 – 2026 28 Ageo
7 703 29792 929 32.07 1998 – 2026 29 University of Arizona Catalina Sky Survey
8 A77 27704 881 31.45 2005 – 2026 22 Observatoire Chante-Perdrix, Dauban
9 G96 26552 1125 23.60 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
10 704 25898 641 40.40 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
11 F51 25384 1118 22.70 2009 – 2026 18 Pan-STARRS 1, Haleakala
12 W68 25041 261 95.94 2022 – 2026 5 ATLAS Chile, Rio Hurtado
13 I81 22594 480 47.07 2011 – 2026 16 Tarbatness Observatory, Portmahomack
14 H45 22302 408 54.66 2005 – 2025 21 Arkansas Sky Obs., Petit Jean Mountain South
15 213 21190 741 28.60 2001 – 2026 26 Observatorio Montcabre
Sum 1736 1553038 4259 364.65 1647 – 2026 380 1736 names

CMTOBS - Observations of comets

Sorted by number of observed objects

Click at right image for a histogram of the top 15 values.
Number of objects of top 15 stations at Minor Planet Center for CMTOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 249 37004 1991 18.59 1996 – 2025 30 SOHO
2 215 14329 1335 10.73 2001 – 2026 26 Buchloe
3 G96 26552 1125 23.60 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
4 F51 25384 1118 22.70 2009 – 2026 18 Pan-STARRS 1, Haleakala
5 349 31067 1013 30.67 1999 – 2026 28 Ageo
6 H06 12797 964 13.27 2004 – 2024 21 iTelescope Observatory, Mayhill
7 204 7876 931 8.46 2001 – 2026 26 Schiaparelli Observatory
8 703 29792 929 32.07 1998 – 2026 29 University of Arizona Catalina Sky Survey
9 A77 27704 881 31.45 2005 – 2026 22 Observatoire Chante-Perdrix, Dauban
10 372 8703 867 10.04 1973 – 2023 51 Geisei
11 Q62 12949 845 15.32 2012 – 2026 15 iTelescope Observatory, Siding Spring
12 213 21190 741 28.60 2001 – 2026 26 Observatorio Montcabre
13 900 11543 727 15.88 1991 – 2026 36 Moriyama
14 F52 12220 725 16.86 2015 – 2026 12 Pan-STARRS 2, Haleakala
15 A71 9773 725 13.48 2005 – 2026 22 Stixendorf
Sum 1736 1553038 4259 364.65 1647 – 2026 380 1736 names

CMTOBS - Observations of comets

Sorted by observations per object

Click at right image for a histogram of the top 15 values.
Part of observations per object of top 15 stations at Minor Planet Center for CMTOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 C57 10230 19 538.42 2018 – 2025 8 TESS
2 G39 4947 31 159.58 2014 – 2021 8 ROAD, San Pedro de Atacama
3 J92 138 1 138.00 2004 – 2004 1 Beaconsfield
4 134 6887 57 120.82 2013 – 2025 13 Groszschwabhausen
5 708 351 3 117.00 1906 – 1911 6 Chamberlin Observatory, Denver
6 190 3646 35 104.17 1969 – 2024 56 Gissar
7 I08 104 1 104.00 2011 – 2011 1 Alianza S4, Cerro Burek
8 A46 9089 89 102.12 2002 – 2006 5 Lelekovice
9 334 204 2 102.00 1973 – 1986 14 Tsingtao
10 C40 10075 99 101.77 2012 – 2026 15 Kuban State University Astrophysical Observatory
11 K81 2946 29 101.59 2018 – 2023 6 P.M.P.H.R. Deep Sky Observatory, Atina
12 I80 97 1 97.00 2019 – 2019 1 Rose Cottage Observatory, Keighley
13 W68 25041 261 95.94 2022 – 2026 5 ATLAS Chile, Rio Hurtado
14 L28 265 3 88.33 2018 – 2023 6 ISON-Castelgrande Observatory
15 813 79 1 79.00 1909 – 1910 2 Santiago-Quinta Normal (1862-1920)
Sum 1736 1553038 4259 364.65 1647 – 2026 380 1736 names

CMTOBS - Observations of comets

Sorted by first year of observation

Click at right image for a histogram of the top 15 values.
First year of observation of top 15 stations at Minor Planet Center for CMTOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 500 256 49 5.22 1647 – 1994 348 Geocentric
2 A51 35 1 35.00 1661 – 1661 1 Danzig
3 324 17 4 4.25 1737 – 1985 249 Peking Observatory, Shaho Station
4 007 213 24 8.88 1819 – 1935 117 Paris
5 281 2 1 2.00 1819 – 1819 1 Bologna
6 027 41 7 5.86 1820 – 1923 104 Milan
7 030 534 39 13.69 1827 – 1919 93 Arcetri Observatory, Florence
8 282 1 1 1.00 1827 – 1827 1 Nimes
9 524 32 4 8.00 1835 – 1969 135 Mannheim
10 548 76 10 7.60 1835 – 1910 76 Berlin (1835-1913)
11 058 236 20 11.80 1835 – 1936 102 Kaliningrad
12 075 119 21 5.67 1835 – 1985 151 Tartu
13 051 465 22 21.14 1836 – 1987 152 Royal Observatory, Cape of Good Hope
14 787 54 9 6.00 1846 – 1896 51 U.S. Naval Obs., Washington (before 1893)
15 533 217 23 9.43 1846 – 1921 76 Padua
Sum 1736 1553038 4259 364.65 1647 – 2026 380 1736 names

CMTOBS - Observations of comets

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
Year range of observations of top 15 stations at Minor Planet Center for CMTOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 500 256 49 5.22 1647 – 1994 348 Geocentric
2 324 17 4 4.25 1737 – 1985 249 Peking Observatory, Shaho Station
3 051 465 22 21.14 1836 – 1987 152 Royal Observatory, Cape of Good Hope
4 075 119 21 5.67 1835 – 1985 151 Tartu
5 503 222 40 5.55 1846 – 1993 148 Cambridge
6 089 1896 60 31.60 1882 – 2026 145 Mykolaiv
7 797 26 3 8.67 1879 – 2022 144 Yale Observatory, New Haven
8 189 114 17 6.71 1880 – 2019 140 Geneva (before 1967)
9 524 32 4 8.00 1835 – 1969 135 Mannheim
10 822 759 45 16.87 1885 – 2019 135 Cordoba
11 084 2245 56 40.09 1877 – 2007 131 Pulkovo
12 541 42 8 5.25 1887 – 2017 131 Prague
13 995 33 3 11.00 1870 – 1997 128 Durham
14 247 868 122 7.11 1901 – 2025 125 Roving Observer
15 662 1324 124 10.68 1888 – 2007 120 Lick Observatory, Mount Hamilton
Sum 1736 1553038 4259 364.65 1647 – 2026 380 1736 names

UNNOBS - Observations of unnumbered minor planets

Sorted by number of observations

Click at right image for a histogram of the top 15 values.
Number of observations of top 15 stations at Minor Planet Center for UNNOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 F51 8716522 550658 15.83 2008 – 2026 19 Pan-STARRS 1, Haleakala
2 G96 5324581 447793 11.89 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
3 F52 3872168 421897 9.18 2015 – 2026 12 Pan-STARRS 2, Haleakala
4 W84 1544942 112536 13.73 2012 – 2026 15 Cerro Tololo-DECam
5 X05 893030 35548 25.12 2024 – 2026 3 Simonyi Survey Telescope, Rubin Observatory
6 V00 656199 129981 5.05 2016 – 2026 11 Kitt Peak-Bok
7 O18 574181 59495 9.65 2023 – 2026 4 WFST, Lenghu
8 691 539184 113943 4.73 1985 – 2026 42 Steward Observatory, Kitt Peak-Spacewatch
9 T09 382114 43302 8.82 2002 – 2026 25 Subaru Telescope, Maunakea
10 D29 250082 45224 5.53 2006 – 2026 21 Purple Mountain Observatory, XuYi Station
11 I52 207458 23083 8.99 2012 – 2026 15 Steward Observatory, Mt. Lemmon Station
12 703 178807 22573 7.92 1998 – 2026 29 University of Arizona Catalina Sky Survey
13 H21 158331 22470 7.05 2009 – 2026 18 Astronomical Research Observatory, Westfield
14 C51 148290 13675 10.84 2010 – 2024 15 WISE
15 807 137831 27453 5.02 1988 – 2026 39 Cerro Tololo Observatory, La Serena
Sum 1309 25794781 699111 36.90 1873 – 2026 154 1309 names

UNNOBS - Observations of unnumbered minor planets

Sorted by number of observed objects

Click at right image for a histogram of the top 15 values.
Number of objects of top 15 stations at Minor Planet Center for UNNOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 F51 8716522 550658 15.83 2008 – 2026 19 Pan-STARRS 1, Haleakala
2 G96 5324581 447793 11.89 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
3 F52 3872168 421897 9.18 2015 – 2026 12 Pan-STARRS 2, Haleakala
4 V00 656199 129981 5.05 2016 – 2026 11 Kitt Peak-Bok
5 691 539184 113943 4.73 1985 – 2026 42 Steward Observatory, Kitt Peak-Spacewatch
6 W84 1544942 112536 13.73 2012 – 2026 15 Cerro Tololo-DECam
7 O18 574181 59495 9.65 2023 – 2026 4 WFST, Lenghu
8 D29 250082 45224 5.53 2006 – 2026 21 Purple Mountain Observatory, XuYi Station
9 T09 382114 43302 8.82 2002 – 2026 25 Subaru Telescope, Maunakea
10 X05 893030 35548 25.12 2024 – 2026 3 Simonyi Survey Telescope, Rubin Observatory
11 291 131812 28203 4.67 2001 – 2026 26 LPL/Spacewatch II
12 807 137831 27453 5.02 1988 – 2026 39 Cerro Tololo Observatory, La Serena
13 I52 207458 23083 8.99 2012 – 2026 15 Steward Observatory, Mt. Lemmon Station
14 703 178807 22573 7.92 1998 – 2026 29 University of Arizona Catalina Sky Survey
15 H21 158331 22470 7.05 2009 – 2026 18 Astronomical Research Observatory, Westfield
Sum 1309 25794781 699111 36.90 1873 – 2026 154 1309 names

UNNOBS - Observations of unnumbered minor planets

Sorted by observations per object

Click at right image for a histogram of the top 15 values.
Part of observations per object of top 15 stations at Minor Planet Center for UNNOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 L50 296 1 296.00 2019 – 2019 1 GenShtab Observatory, Nauchnyi
2 A84 1244 7 177.71 2002 – 2013 12 TUBITAK National Observatory
3 I27 1199 7 171.29 2011 – 2015 5 Barred Owl Observatory, Carp
4 E09 162 1 162.00 2008 – 2008 1 Oakley Southern Sky Observatory, Coonabarabran
5 C20 1601 12 133.42 2009 – 2023 15 Kislovodsk Mtn. Astronomical Stn., Pulkovo Obs.
6 C57 15080 174 86.67 2018 – 2024 7 TESS
7 B30 236 4 59.00 2007 – 2007 1 Szamotuly-Galowo
8 134 56 1 56.00 2017 – 2017 1 Groszschwabhausen
9 Z01 160 3 53.33 2023 – 2025 3 OWL-Net, Oukaimeden
10 I50 104 2 52.00 2012 – 2012 1 P2 Observatory, Mayhill
11 Z73 98 2 49.00 2015 – 2017 3 Observatorio Nuevos Horizontes, Camas
12 C54 98 2 49.00 2020 – 2020 1 New Horizons
13 L96 145 3 48.33 2015 – 2019 5 ISON-Byurakan Observatory
14 W08 46 1 46.00 2017 – 2017 1 Jimginny Observatory, Naperville
15 H78 219 5 43.80 2010 – 2025 16 University of Narino Observatory, Pasto
Sum 1309 25794781 699111 36.90 1873 – 2026 154 1309 names

UNNOBS - Observations of unnumbered minor planets

Sorted by first year of observation

Click at right image for a histogram of the top 15 values.
First year of observation of top 15 stations at Minor Planet Center for UNNOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 767 1 1 1.00 1873 – 1873 1 Ann Arbor
2 787 1 1 1.00 1874 – 1874 1 U.S. Naval Obs., Washington (before 1893)
3 548 1 1 1.00 1878 – 1878 1 Berlin (1835-1913)
4 045 3 3 1.00 1890 – 1940 51 Vienna (since 1879)
5 024 1274 749 1.70 1891 – 2013 123 Heidelberg-Konigstuhl
6 007 1 1 1.00 1892 – 1892 1 Paris
7 537 1 1 1.00 1898 – 1898 1 Urania Observatory, Berlin
8 800 20 20 1.00 1899 – 1922 24 Harvard Observatory, Arequipa
9 786 6 4 1.50 1903 – 1996 94 U.S. Naval Obs., Washington (since 1893)
10 690 65 48 1.35 1906 – 1961 56 Lowell Observatory, Flagstaff
11 803 25 22 1.14 1906 – 1910 5 Taunton
12 084 1063 80 13.29 1906 – 2023 118 Pulkovo
13 078 178 166 1.07 1911 – 1954 44 Johannesburg
14 662 66 28 2.36 1911 – 2004 94 Lick Observatory, Mount Hamilton
15 799 27 27 1.00 1912 – 1914 3 Winchester
Sum 1309 25794781 699111 36.90 1873 – 2026 154 1309 names

UNNOBS - Observations of unnumbered minor planets

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
Year range of observations of top 15 stations at Minor Planet Center for UNNOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 024 1274 749 1.70 1891 – 2013 123 Heidelberg-Konigstuhl
2 084 1063 80 13.29 1906 – 2023 118 Pulkovo
3 094 434 216 2.01 1912 – 2025 114 Crimea-Simeiz
4 006 147 30 4.90 1914 – 2022 109 Fabra Observatory, Barcelona
5 754 512 129 3.97 1924 – 2018 95 Yerkes Observatory, Williams Bay
6 662 66 28 2.36 1911 – 2004 94 Lick Observatory, Mount Hamilton
7 786 6 4 1.50 1903 – 1996 94 U.S. Naval Obs., Washington (since 1893)
8 012 911 467 1.95 1924 – 2013 90 Uccle
9 119 95 54 1.76 1938 – 2021 84 Abastuman
10 073 597 94 6.35 1943 – 2025 83 Bucharest
11 186 230 29 7.93 1942 – 2023 82 Kitab
12 672 4 3 1.33 1926 – 2003 78 Mount Wilson
13 675 1496 474 3.16 1952 – 2025 74 Palomar Mountain
14 711 7811 1935 4.04 1950 – 2021 72 McDonald Observatory, Fort Davis
15 056 30 7 4.29 1954 – 2025 72 Skalnate Pleso
Sum 1309 25794781 699111 36.90 1873 – 2026 154 1309 names

ITF - Observations of tracklets (1-night objects)

Sorted by number of observations

Click at right image for a histogram of the top 15 values.
Number of observations of top 15 stations at Minor Planet Center for ITF class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 F51 2763940 822021 3.36 2009 – 2026 18 Pan-STARRS 1, Haleakala
2 W84 1201836 213529 5.63 2002 – 2026 25 Cerro Tololo-DECam
3 G96 1093939 284982 3.84 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
4 F52 1043520 313803 3.33 2014 – 2026 13 Pan-STARRS 2, Haleakala
5 T09 867298 217159 3.99 2002 – 2026 25 Subaru Telescope, Maunakea
6 V00 485579 125974 3.85 2016 – 2026 11 Kitt Peak-Bok
7 705 462602 231302 2.00 1858 – 2025 168 Apache Point
8 691 260530 87344 2.98 1990 – 2026 37 Steward Observatory, Kitt Peak-Spacewatch
9 309 152593 7696 19.83 2000 – 2024 25 Cerro Paranal
10 703 127610 37236 3.43 1998 – 2026 29 University of Arizona Catalina Sky Survey
11 644 107498 35918 2.99 2001 – 2017 17 Palomar Mountain/NEAT
12 699 92479 27977 3.31 1998 – 2008 11 Lowell Observatory-LONEOS
13 568 72290 18586 3.89 1993 – 2024 32 Maunakea
14 695 68078 31891 2.13 1995 – 2025 31 Kitt Peak
15 807 65218 31484 2.07 1997 – 2026 30 Cerro Tololo Observatory, La Serena
Sum 880 9353251 2616076 3.58 1858 – 2026 169 880 names

ITF - Observations of tracklets (1-night objects)

Sorted by number of observed objects

Click at right image for a histogram of the top 15 values.
Number of objects of top 15 stations at Minor Planet Center for ITF class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 F51 2763940 822021 3.36 2009 – 2026 18 Pan-STARRS 1, Haleakala
2 F52 1043520 313803 3.33 2014 – 2026 13 Pan-STARRS 2, Haleakala
3 G96 1093939 284982 3.84 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
4 705 462602 231302 2.00 1858 – 2025 168 Apache Point
5 T09 867298 217159 3.99 2002 – 2026 25 Subaru Telescope, Maunakea
6 W84 1201836 213529 5.63 2002 – 2026 25 Cerro Tololo-DECam
7 V00 485579 125974 3.85 2016 – 2026 11 Kitt Peak-Bok
8 691 260530 87344 2.98 1990 – 2026 37 Steward Observatory, Kitt Peak-Spacewatch
9 703 127610 37236 3.43 1998 – 2026 29 University of Arizona Catalina Sky Survey
10 644 107498 35918 2.99 2001 – 2017 17 Palomar Mountain/NEAT
11 695 68078 31891 2.13 1995 – 2025 31 Kitt Peak
12 807 65218 31484 2.07 1997 – 2026 30 Cerro Tololo Observatory, La Serena
13 699 92479 27977 3.31 1998 – 2008 11 Lowell Observatory-LONEOS
14 568 72290 18586 3.89 1993 – 2024 32 Maunakea
15 O18 57450 15441 3.72 2023 – 2026 4 WFST, Lenghu
Sum 880 9353251 2616076 3.58 1858 – 2026 169 880 names

ITF - Observations of tracklets (1-night objects)

Sorted by observations per object

Click at right image for a histogram of the top 15 values.
Part of observations per object of top 15 stations at Minor Planet Center for ITF class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 190 212 3 70.67 2013 – 2019 7 Gissar
2 D08 60 1 60.00 2013 – 2013 1 Ghezz Observatory, Leontica
3 X05 62995 1364 46.18 2025 – 2026 2 Simonyi Survey Telescope, Rubin Observatory
4 N42 65 2 32.50 2014 – 2021 8 Tien-Shan Astronomical Observatory
5 249 632 20 31.60 1999 – 2012 14 SOHO
6 073 92 3 30.67 2004 – 2021 18 Bucharest
7 A84 23 1 23.00 2005 – 2005 1 TUBITAK National Observatory
8 258 1243 58 21.43 2018 – 2022 5 Gaia
9 O49 21 1 21.00 2020 – 2020 1 Purple Mountain Observatory, Yaoan Station
10 159 20 1 20.00 2002 – 2002 1 Monte Agliale
11 309 152593 7696 19.83 2000 – 2024 25 Cerro Paranal
12 661 38 2 19.00 2007 – 2007 1 Rothney Astrophysical Observatory, Priddis
13 B41 18 1 18.00 2018 – 2018 1 Zlin Observatory
14 A97 16 1 16.00 2006 – 2006 1 Stammersdorf
15 740 94 6 15.67 2001 – 2004 4 SFA Observatory, Nacogdoches
Sum 880 9353251 2616076 3.58 1858 – 2026 169 880 names

ITF - Observations of tracklets (1-night objects)

Sorted by first year of observation

Click at right image for a histogram of the top 15 values.
First year of observation of top 15 stations at Minor Planet Center for ITF class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 705 462602 231302 2.00 1858 – 2025 168 Apache Point
2 493 603 190 3.17 1889 – 2018 130 Calar Alto
3 557 129 42 3.07 1901 – 2018 118 Ondrejov
4 165 11 4 2.75 1920 – 2011 92 Piera Observatory, Barcelona
5 675 184 47 3.91 1950 – 2025 76 Palomar Mountain
6 261 89 45 1.98 1951 – 1998 48 Palomar Mountain-DSS
7 260 81 37 2.19 1974 – 1995 22 Siding Spring Observatory-DSS
8 413 163 66 2.47 1977 – 2007 31 Siding Spring Observatory
9 046 46 11 4.18 1982 – 2017 36 Klet Observatory, Ceske Budejovice
10 098 60 30 2.00 1983 – 1998 16 Asiago Observatory, Cima Ekar, 182 cm Copernicus
11 809 3817 954 4.00 1988 – 2022 35 European Southern Observatory, La Silla
12 071 351 74 4.74 1988 – 2020 33 NAO Rozhen, Smolyan
13 691 260530 87344 2.98 1990 – 2026 37 Steward Observatory, Kitt Peak-Spacewatch
14 511 124 23 5.39 1991 – 2024 34 Haute Provence
15 095 1250 517 2.42 1991 – 2026 36 Crimea-Nauchnyi
Sum 880 9353251 2616076 3.58 1858 – 2026 169 880 names

ITF - Observations of tracklets (1-night objects)

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
Year range of observations of top 15 stations at Minor Planet Center for ITF class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 705 462602 231302 2.00 1858 – 2025 168 Apache Point
2 493 603 190 3.17 1889 – 2018 130 Calar Alto
3 557 129 42 3.07 1901 – 2018 118 Ondrejov
4 165 11 4 2.75 1920 – 2011 92 Piera Observatory, Barcelona
5 675 184 47 3.91 1950 – 2025 76 Palomar Mountain
6 261 89 45 1.98 1951 – 1998 48 Palomar Mountain-DSS
7 691 260530 87344 2.98 1990 – 2026 37 Steward Observatory, Kitt Peak-Spacewatch
8 046 46 11 4.18 1982 – 2017 36 Klet Observatory, Ceske Budejovice
9 095 1250 517 2.42 1991 – 2026 36 Crimea-Nauchnyi
10 809 3817 954 4.00 1988 – 2022 35 European Southern Observatory, La Silla
11 511 124 23 5.39 1991 – 2024 34 Haute Provence
12 010 217 73 2.97 1992 – 2025 34 Caussols
13 033 804 256 3.14 1993 – 2026 34 Karl Schwarzschild Observatory, Tautenburg
14 670 10 4 2.50 1992 – 2024 33 Camarillo
15 071 351 74 4.74 1988 – 2020 33 NAO Rozhen, Smolyan
Sum 880 9353251 2616076 3.58 1858 – 2026 169 880 names

NUMOBS - Observations of numbered objects

Sorted by number of observations

Click at right image for a histogram of the top 15 values.
Number of observations of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 G96 76862627 892967 86.08 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
2 F51 71912744 895356 80.32 2008 – 2026 19 Pan-STARRS 1, Haleakala
3 703 37591190 507651 74.05 1998 – 2026 29 University of Arizona Catalina Sky Survey
4 F52 35229175 886592 39.74 2014 – 2026 13 Pan-STARRS 2, Haleakala
5 T05 34037347 297934 114.24 2015 – 2026 12 ATLAS-HKO, Haleakala
6 704 32768840 371152 88.29 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
7 T08 32426977 306978 105.63 2014 – 2026 13 ATLAS-MLO, Mauna Loa
8 C57 22529705 44517 506.09 2018 – 2024 7 TESS
9 D29 19385355 641011 30.24 2006 – 2026 21 Purple Mountain Observatory, XuYi Station
10 G45 17097501 391690 43.65 2011 – 2017 7 Space Surveillance Telescope, Atom Site
11 I41 14836488 415248 35.73 2002 – 2026 25 Palomar Mountain--ZTF
12 W68 13880686 217309 63.88 2022 – 2026 5 ATLAS Chile, Rio Hurtado
13 691 13749767 736271 18.67 1984 – 2026 43 Steward Observatory, Kitt Peak-Spacewatch
14 M22 10773612 210050 51.29 2022 – 2026 5 ATLAS South Africa, Sutherland
15 P07 10050445 294821 34.09 2020 – 2026 7 Space Surveillance Telescope, HEH Station
Sum 2491 498337341 895910 556.24 1801 – 2026 226 2491 names

NUMOBS - Observations of numbered objects

Sorted by number of observed objects

Click at right image for a histogram of the top 15 values.
Number of objects of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 F51 71912744 895356 80.32 2008 – 2026 19 Pan-STARRS 1, Haleakala
2 G96 76862627 892967 86.08 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
3 F52 35229175 886592 39.74 2014 – 2026 13 Pan-STARRS 2, Haleakala
4 691 13749767 736271 18.67 1984 – 2026 43 Steward Observatory, Kitt Peak-Spacewatch
5 D29 19385355 641011 30.24 2006 – 2026 21 Purple Mountain Observatory, XuYi Station
6 703 37591190 507651 74.05 1998 – 2026 29 University of Arizona Catalina Sky Survey
7 V00 3334013 499466 6.68 2016 – 2026 11 Kitt Peak-Bok
8 I41 14836488 415248 35.73 2002 – 2026 25 Palomar Mountain--ZTF
9 G45 17097501 391690 43.65 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 704 32768840 371152 88.29 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
11 644 3947480 322812 12.23 1990 – 2010 21 Palomar Mountain/NEAT
12 T08 32426977 306978 105.63 2014 – 2026 13 ATLAS-MLO, Mauna Loa
13 O18 5271809 305170 17.27 2023 – 2026 4 WFST, Lenghu
14 T05 34037347 297934 114.24 2015 – 2026 12 ATLAS-HKO, Haleakala
15 P07 10050445 294821 34.09 2020 – 2026 7 Space Surveillance Telescope, HEH Station
Sum 2491 498337341 895910 556.24 1801 – 2026 226 2491 names

NUMOBS - Observations of numbered objects

Sorted by observations per object

Click at right image for a histogram of the top 15 values.
Part of observations per object of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 768 1966 2 983.00 1930 – 1934 5 Dearborn Observatory, Evanston (aft. Oct. 1939)
2 874 6106 7 872.29 1995 – 2025 31 Observatorio do Pico dos Dias, Itajuba
3 C57 22529705 44517 506.09 2018 – 2024 7 TESS
4 217 769 3 256.33 2021 – 2021 1 Assah
5 O44 453 2 226.50 2012 – 2013 2 Lijiang Station, Yunnan Observatories
6 708 398 2 199.00 1895 – 1908 14 Chamberlin Observatory, Denver
7 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
8 L98 5201 32 162.53 2017 – 2018 2 La Sagra Observatory, Puebla de Don Fadrique
9 270 10120 75 134.93 2021 – 2026 6 Unistellar Network, Roving Observer
10 R78 912 7 130.29 2024 – 2024 1 Crystal Lake Observatory, Ngutunui
11 C55 355 3 118.33 2016 – 2016 1 Kepler
12 248 5641 48 117.52 1989 – 1993 5 Hipparcos
13 778 1981 17 116.53 1935 – 1990 56 Allegheny Observatory, Pittsburgh
14 T05 34037347 297934 114.24 2015 – 2026 12 ATLAS-HKO, Haleakala
15 T08 32426977 306978 105.63 2014 – 2026 13 ATLAS-MLO, Mauna Loa
Sum 2491 498337341 895910 556.24 1801 – 2026 226 2491 names

NUMOBS - Observations of numbered objects

Sorted by first year of observation

Click at right image for a histogram of the top 15 values.
First year of observation of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 535 21 1 21.00 1801 – 1801 1 Palermo
2 500 2886 56 51.54 1802 – 2021 220 Geocentric
3 528 164 18 9.11 1804 – 1983 180 Gottingen
4 541 165 33 5.00 1804 – 2000 197 Prague
5 027 185 38 4.87 1804 – 1942 139 Milan
6 283 4 1 4.00 1804 – 1804 1 Bremen
7 058 347 61 5.69 1820 – 1939 120 Kaliningrad
8 548 609 88 6.92 1822 – 1898 77 Berlin (1835-1913)
9 527 82 10 8.20 1823 – 1861 39 Altona
10 969 15 3 5.00 1825 – 1852 28 London-Regents Park
11 524 17 3 5.67 1827 – 1834 8 Mannheim
12 533 687 102 6.74 1829 – 1923 95 Padua
13 503 134 16 8.38 1830 – 1989 160 Cambridge
14 062 8585 1800 4.77 1830 – 1957 128 Turku
15 545 264 41 6.44 1830 – 1873 44 Vienna (before 1879)
Sum 2491 498337341 895910 556.24 1801 – 2026 226 2491 names

NUMOBS - Observations of numbered objects

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
Year range of observations of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 500 2886 56 51.54 1802 – 2021 220 Geocentric
2 541 165 33 5.00 1804 – 2000 197 Prague
3 528 164 18 9.11 1804 – 1983 180 Gottingen
4 084 23852 1096 21.76 1846 – 2013 168 Pulkovo
5 503 134 16 8.38 1830 – 1989 160 Cambridge
6 784 384 64 6.00 1866 – 2012 147 Stull Observatory, Alfred University
7 027 185 38 4.87 1804 – 1942 139 Milan
8 035 3029 110 27.54 1835 – 1970 136 Copenhagen
9 822 1673 233 7.18 1885 – 2020 136 Cordoba
10 062 8585 1800 4.77 1830 – 1957 128 Turku
11 055 244 89 2.74 1835 – 1957 123 Cracow
12 058 347 61 5.69 1820 – 1939 120 Kaliningrad
13 024 17173 2689 6.39 1891 – 2009 119 Heidelberg-Konigstuhl
14 013 5587 87 64.22 1864 – 1979 116 Leiden
15 070 138 56 2.46 1841 – 1954 114 Vilnius (before 1939)
Sum 2491 498337341 895910 556.24 1801 – 2026 226 2491 names

ALL - Observations of all objects together

Sorted by number of observations

Click at right image for a histogram of the top 15 values.
Number of observations of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 F51 83419455 2268787 36.77 2008 – 2026 19 Pan-STARRS 1, Haleakala
2 G96 83309219 1626500 51.22 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
3 F52 40157126 1622800 24.75 2014 – 2026 13 Pan-STARRS 2, Haleakala
4 703 37929814 568066 66.77 1998 – 2026 29 University of Arizona Catalina Sky Survey
5 T05 34136311 303189 112.59 2015 – 2026 12 ATLAS-HKO, Haleakala
6 704 32851053 376409 87.27 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
7 T08 32523387 312314 104.14 2014 – 2026 13 ATLAS-MLO, Mauna Loa
8 C57 22555094 44707 504.51 2018 – 2025 8 TESS
9 D29 19660637 692755 28.38 2006 – 2026 21 Purple Mountain Observatory, XuYi Station
10 G45 17168688 397186 43.23 2011 – 2017 7 Space Surveillance Telescope, Atom Site
11 I41 14974309 430758 34.76 2002 – 2026 25 Palomar Mountain--ZTF
12 691 14558360 937988 15.52 1984 – 2026 43 Steward Observatory, Kitt Peak-Spacewatch
13 W68 13923740 219075 63.56 2022 – 2026 5 ATLAS Chile, Rio Hurtado
14 M22 10806421 211716 51.04 2022 – 2026 5 ATLAS South Africa, Sutherland
15 P07 10082523 298999 33.72 2020 – 2026 7 Space Surveillance Telescope, HEH Station
Sum 2635 535109881 4212283 127.04 1647 – 2026 380 2635 names

ALL - Observations of all objects together

Sorted by number of observed objects

Click at right image for a histogram of the top 15 values.
Number of objects of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 F51 83419455 2268787 36.77 2008 – 2026 19 Pan-STARRS 1, Haleakala
2 G96 83309219 1626500 51.22 2004 – 2026 23 University of Arizona Mt. Lemmon Survey
3 F52 40157126 1622800 24.75 2014 – 2026 13 Pan-STARRS 2, Haleakala
4 691 14558360 937988 15.52 1984 – 2026 43 Steward Observatory, Kitt Peak-Spacewatch
5 V00 4476986 755568 5.93 2016 – 2026 11 Kitt Peak-Bok
6 D29 19660637 692755 28.38 2006 – 2026 21 Purple Mountain Observatory, XuYi Station
7 703 37929814 568066 66.77 1998 – 2026 29 University of Arizona Catalina Sky Survey
8 W84 5996287 559041 10.73 2002 – 2026 25 Cerro Tololo-DECam
9 I41 14974309 430758 34.76 2002 – 2026 25 Palomar Mountain--ZTF
10 G45 17168688 397186 43.23 2011 – 2017 7 Space Surveillance Telescope, Atom Site
11 O18 5904403 380172 15.53 2023 – 2026 4 WFST, Lenghu
12 704 32851053 376409 87.27 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
13 644 4083299 363562 11.23 1990 – 2017 28 Palomar Mountain/NEAT
14 T09 1764328 336930 5.24 2002 – 2026 25 Subaru Telescope, Maunakea
15 T08 32523387 312314 104.14 2014 – 2026 13 ATLAS-MLO, Mauna Loa
Sum 2635 535109881 4212283 127.04 1647 – 2026 380 2635 names

ALL - Observations of all objects together

Sorted by observations per object

Click at right image for a histogram of the top 15 values.
Part of observations per object of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 249 37636 35 1075.31 1996 – 2025 30 SOHO
2 768 1966 2 983.00 1930 – 1934 5 Dearborn Observatory, Evanston (aft. Oct. 1939)
3 C49 3073 6 512.17 2007 – 2025 19 STEREO-A
4 C57 22555094 44707 504.51 2018 – 2025 8 TESS
5 874 6613 18 367.39 1983 – 2025 43 Observatorio do Pico dos Dias, Itajuba
6 C50 1398 6 233.00 2007 – 2013 7 STEREO-B
7 G39 5044 24 210.17 2012 – 2021 10 ROAD, San Pedro de Atacama
8 217 797 4 199.25 1984 – 2021 38 Assah
9 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
10 708 749 4 187.25 1895 – 1911 17 Chamberlin Observatory, Denver
11 A46 9184 55 166.98 2002 – 2006 5 Lelekovice
12 L98 5201 32 162.53 2017 – 2018 2 La Sagra Observatory, Puebla de Don Fadrique
13 R78 912 7 130.29 2024 – 2024 1 Crystal Lake Observatory, Ngutunui
14 Q19 1001 8 125.13 2015 – 2024 10 Machida
15 248 5641 48 117.52 1989 – 1993 5 Hipparcos
Sum 2635 535109881 4212283 127.04 1647 – 2026 380 2635 names

ALL - Observations of all objects together

Sorted by first year of observation

Click at right image for a histogram of the top 15 values.
First year of observation of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 500 3152 71 44.39 1647 – 2021 375 Geocentric
2 A51 35 1 35.00 1661 – 1661 1 Danzig
3 324 22 5 4.40 1737 – 1985 249 Peking Observatory, Shaho Station
4 535 52 3 17.33 1801 – 1903 103 Palermo
5 541 211 39 5.41 1804 – 2017 214 Prague
6 027 226 43 5.26 1804 – 1942 139 Milan
7 528 243 21 11.57 1804 – 1986 183 Gottingen
8 283 4 1 4.00 1804 – 1804 1 Bremen
9 007 715 128 5.59 1819 – 1950 132 Paris
10 281 2 1 2.00 1819 – 1819 1 Bologna
11 058 583 73 7.99 1820 – 1939 120 Kaliningrad
12 548 686 94 7.30 1822 – 1910 89 Berlin (1835-1913)
13 527 91 12 7.58 1823 – 1871 49 Altona
14 969 15 3 5.00 1825 – 1852 28 London-Regents Park
15 282 8 2 4.00 1827 – 1858 32 Nimes
Sum 2635 535109881 4212283 127.04 1647 – 2026 380 2635 names

ALL - Observations of all objects together

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
Year range of observations of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 500 3152 71 44.39 1647 – 2021 375 Geocentric
2 324 22 5 4.40 1737 – 1985 249 Peking Observatory, Shaho Station
3 541 211 39 5.41 1804 – 2017 214 Prague
4 528 243 21 11.57 1804 – 1986 183 Gottingen
5 084 27185 1199 22.67 1846 – 2023 178 Pulkovo
6 705 628709 250577 2.51 1858 – 2026 169 Apache Point
7 503 356 33 10.79 1830 – 1993 164 Cambridge
8 189 283 40 7.07 1861 – 2019 159 Geneva (before 1967)
9 051 1080 32 33.75 1836 – 1987 152 Royal Observatory, Cape of Good Hope
10 075 841 258 3.26 1835 – 1985 151 Tartu
11 995 124 12 10.33 1850 – 1997 148 Durham
12 105 331 51 6.49 1879 – 2026 148 Moscow
13 784 511 79 6.47 1866 – 2012 147 Stull Observatory, Alfred University
14 089 24912 807 30.87 1882 – 2026 145 Mykolaiv
15 062 8795 1851 4.75 1830 – 1973 144 Turku
Sum 2635 535109881 4212283 127.04 1647 – 2026 380 2635 names