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 3687 139 26.53 1984 – 2019 36 Mauna Kea
2 415 2020 15 134.67 2004 – 2010 7 Kambah
3 704 1654 9 183.78 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
4 689 1305 8 163.13 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
5 G36 846 9 94.00 2011 – 2018 8 Calar Alto-CASADO
6 691 611 15 40.73 1992 – 2017 26 Steward Observatory, Kitt Peak-Spacewatch
7 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
8 E07 557 17 32.76 2011 – 2015 5 Murrumbateman
9 F51 492 21 23.43 2011 – 2018 8 Pan-STARRS 1, Haleakala
10 673 447 9 49.67 1968 – 2017 50 Table Mountain Observatory, Wrightwood
11 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
12 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
13 G45 426 7 60.86 2014 – 2016 3 Space Surveillance Telescope, Atom Site
14 T05 408 9 45.33 2016 – 2021 6 ATLAS-HKO, Haleakala
15 807 366 67 5.46 1998 – 2018 21 Cerro Tololo Observatory, La Serena
Sum 145 20776 145 143.28 1894 – 2021 128 145 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 3687 139 26.53 1984 – 2019 36 Mauna Kea
2 807 366 67 5.46 1998 – 2018 21 Cerro Tololo Observatory, La Serena
3 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
4 304 324 46 7.04 2002 – 2018 17 Las Campanas Observatory
5 695 154 28 5.50 1969 – 2013 45 Kitt Peak
6 W84 236 24 9.83 2013 – 2019 7 Cerro Tololo-DECam
7 809 178 22 8.09 1981 – 2013 33 European Southern Observatory, La Silla
8 F51 492 21 23.43 2011 – 2018 8 Pan-STARRS 1, Haleakala
9 950 78 19 4.11 1997 – 2011 15 La Palma
10 E07 557 17 32.76 2011 – 2015 5 Murrumbateman
11 309 110 17 6.47 2000 – 2010 11 Cerro Paranal
12 G96 291 17 17.12 2005 – 2018 14 Mt. Lemmon Survey
13 691 611 15 40.73 1992 – 2017 26 Steward Observatory, Kitt Peak-Spacewatch
14 415 2020 15 134.67 2004 – 2010 7 Kambah
15 644 242 11 22.00 2001 – 2006 6 Palomar Mountain/NEAT
Sum 145 20776 145 143.28 1894 – 2021 128 145 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 G80 217 1 217.00 2015 – 2015 1 Sierra Remote Observatories, Auberry
2 286 210 1 210.00 2003 – 2005 3 Yunnan Observatory
3 704 1654 9 183.78 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
4 689 1305 8 163.13 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
5 415 2020 15 134.67 2004 – 2010 7 Kambah
6 337 115 1 115.00 2003 – 2004 2 Sheshan, formerly Zo-Se
7 G36 846 9 94.00 2011 – 2018 8 Calar Alto-CASADO
8 511 170 2 85.00 1998 – 1999 2 Haute Provence
9 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
10 G45 426 7 60.86 2014 – 2016 3 Space Surveillance Telescope, Atom Site
11 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
12 673 447 9 49.67 1968 – 2017 50 Table Mountain Observatory, Wrightwood
13 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
14 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
15 T05 408 9 45.33 2016 – 2021 6 ATLAS-HKO, Haleakala
Sum 145 20776 145 143.28 1894 – 2021 128 145 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)
6 000 181 4 45.25 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-Simeis
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 145 20776 145 143.28 1894 – 2021 128 145 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 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
6 673 447 9 49.67 1968 – 2017 50 Table Mountain Observatory, Wrightwood
7 695 154 28 5.50 1969 – 2013 45 Kitt Peak
8 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
9 672 199 8 24.88 1916 – 1951 36 Mount Wilson
10 568 3687 139 26.53 1984 – 2019 36 Mauna Kea
11 693 25 6 4.17 1967 – 2000 34 Catalina Station, Tucson
12 809 178 22 8.09 1981 – 2013 33 European Southern Observatory, La Silla
13 691 611 15 40.73 1992 – 2017 26 Steward Observatory, Kitt Peak-Spacewatch
14 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
15 807 366 67 5.46 1998 – 2018 21 Cerro Tololo Observatory, La Serena
Sum 145 20776 145 143.28 1894 – 2021 128 145 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 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 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 Catalina Sky Survey
3 G96 971 47 20.66 2005 – 2018 14 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
13 168 61 1 61.00 2014 – 2014 1 Kourovskaya
14 J75 793 13 61.00 2007 – 2013 7 OAM Observatory, La Sagra
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 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 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  
1 249 36894 1988 18.56 1996 – 2020 25 SOHO
2 585 33046 556 59.44 1986 – 2021 36 Kyiv comet station
3 349 26276 861 30.52 1999 – 2021 23 Ageo
4 704 25764 634 40.64 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
5 T08 23915 360 66.43 2017 – 2021 5 ATLAS-MLO, Mauna Loa
6 T05 22621 416 54.38 2015 – 2021 7 ATLAS-HKO, Haleakala
7 H45 22026 396 55.62 2005 – 2020 16 Arkansas Sky Obs., Petit Jean Mountain South
8 C23 21023 431 48.78 2010 – 2021 12 Olmen
9 958 20351 325 62.62 1997 – 2020 24 Observatoire de Dax
10 703 20226 791 25.57 1998 – 2021 24 Catalina Sky Survey
11 A77 19081 681 28.02 2005 – 2021 17 Observatoire Chante-Perdrix, Dauban
12 213 18884 662 28.53 2001 – 2021 21 Observatorio Montcabre
13 160 17400 369 47.15 1998 – 2021 24 Castelmartini
14 F51 16913 829 20.40 2009 – 2021 13 Pan-STARRS 1, Haleakala
15 B96 16876 397 42.51 2009 – 2021 13 Brixiis Observatory, Kruibeke
Sum 1494 1172663 3937 297.86 1661 – 2021 361 1494 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 36894 1988 18.56 1996 – 2020 25 SOHO
2 215 10568 1095 9.65 2001 – 2021 21 Buchloe
3 H06 11623 871 13.34 2004 – 2021 18 iTelescope Observatory, Mayhill
4 372 8675 864 10.04 1973 – 2021 49 Geisei
5 349 26276 861 30.52 1999 – 2021 23 Ageo
6 G96 16455 841 19.57 2004 – 2021 18 Mt. Lemmon Survey
7 F51 16913 829 20.40 2009 – 2021 13 Pan-STARRS 1, Haleakala
8 204 7304 812 9.00 2001 – 2021 21 Schiaparelli Observatory
9 703 20226 791 25.57 1998 – 2021 24 Catalina Sky Survey
10 A77 19081 681 28.02 2005 – 2021 17 Observatoire Chante-Perdrix, Dauban
11 213 18884 662 28.53 2001 – 2021 21 Observatorio Montcabre
12 A71 9184 661 13.89 2005 – 2021 17 Stixendorf
13 704 25764 634 40.64 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
14 Q62 7841 633 12.39 2012 – 2021 10 iTelescope Observatory, Siding Spring
15 130 2679 616 4.35 1997 – 2021 25 Lumezzane
Sum 1494 1172663 3937 297.86 1661 – 2021 361 1494 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 4718 11 428.91 2019 – 2019 1 TESS
2 G39 4937 31 159.26 2014 – 2021 8 ROAD, San Pedro de Atacama
3 J92 138 1 138.00 2004 – 2004 1 Beaconsfield
4 L28 260 2 130.00 2018 – 2020 3 ISON-Castelgrande Observatory
5 K81 2915 23 126.74 2018 – 2020 3 P.M.P.H.R. Deep Sky Observatory, Atina
6 708 351 3 117.00 1906 – 1911 6 Chamberlin Observatory, Denver
7 I08 104 1 104.00 2011 – 2011 1 Alianza S4, Cerro Burek
8 C40 2360 23 102.61 2012 – 2021 10 Kuban State University Astrophysical Observatory
9 A46 9089 89 102.12 2002 – 2006 5 Lelekovice
10 334 204 2 102.00 1973 – 1986 14 Tsingtao
11 I80 97 1 97.00 2019 – 2019 1 Rose Cottage Observatory, Keighley
12 190 2322 24 96.75 1969 – 2021 53 Gissar
13 813 79 1 79.00 1909 – 1910 2 Santiago-Quinta Normal (1862-1920)
14 071 9393 128 73.38 1983 – 2018 36 NAO Rozhen, Smolyan
15 A84 137 2 68.50 2018 – 2019 2 TUBITAK National Observatory
Sum 1494 1172663 3937 297.86 1661 – 2021 361 1494 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 A51 35 1 35.00 1661 – 1661 1 Danzig
2 324 17 4 4.25 1737 – 1985 249 Peking Observatory, Shaho Station
3 007 212 23 9.22 1819 – 1935 117 Paris
4 281 2 1 2.00 1819 – 1819 1 Bologna
5 027 39 6 6.50 1820 – 1923 104 Milan
6 030 534 39 13.69 1827 – 1919 93 Arcetri Observatory, Florence
7 282 1 1 1.00 1827 – 1827 1 Nimes
8 075 119 21 5.67 1835 – 1985 151 Tartu
9 548 75 9 8.33 1835 – 1910 76 Berlin (1835-1913)
10 524 32 4 8.00 1835 – 1969 135 Mannheim
11 058 200 18 11.11 1835 – 1919 85 Kaliningrad
12 051 465 22 21.14 1836 – 1987 152 Royal Observatory, Cape of Good Hope
13 533 208 22 9.45 1846 – 1921 76 Padua
14 787 51 8 6.38 1846 – 1896 51 U.S. Naval Obs., Washington (before 1893)
15 539 112 18 6.22 1846 – 1907 62 Kremsmunster
Sum 1494 1172663 3937 297.86 1661 – 2021 361 1494 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  
1 324 17 4 4.25 1737 – 1985 249 Peking Observatory, Shaho Station
2 051 465 22 21.14 1836 – 1987 152 Royal Observatory, Cape of Good Hope
3 075 119 21 5.67 1835 – 1985 151 Tartu
4 503 222 40 5.55 1846 – 1993 148 Cambridge
5 189 105 16 6.56 1880 – 2019 140 Geneva (before 1967)
6 089 1715 57 30.09 1882 – 2021 140 Nikolaev
7 524 32 4 8.00 1835 – 1969 135 Mannheim
8 822 711 43 16.53 1885 – 2019 135 Cordoba
9 084 2230 55 40.55 1877 – 2007 131 Pulkovo
10 995 33 3 11.00 1870 – 1997 128 Durham
11 541 37 6 6.17 1894 – 2017 124 Prague
12 547 26 6 4.33 1866 – 1984 119 Breslau
13 662 1191 122 9.76 1889 – 2007 119 Lick Observatory, Mount Hamilton
14 105 162 11 14.73 1879 – 1997 119 Moscow
15 012 547 47 11.64 1894 – 2012 119 Uccle
Sum 1494 1172663 3937 297.86 1661 – 2021 361 1494 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 12424759 567553 21.89 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 8853170 513428 17.24 2004 – 2021 18 Mt. Lemmon Survey
3 F52 1715676 233206 7.36 2014 – 2021 8 Pan-STARRS 2, Haleakala
4 691 1532028 256263 5.98 1985 – 2021 37 Steward Observatory, Kitt Peak-Spacewatch
5 W84 727970 39792 18.29 2012 – 2021 10 Cerro Tololo-DECam
6 703 562460 67711 8.31 1998 – 2021 24 Catalina Sky Survey
7 I41 556967 46394 12.01 2002 – 2021 20 Palomar Mountain--ZTF
8 C51 349320 32413 10.78 2010 – 2021 12 WISE
9 D29 241951 56229 4.30 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
10 G45 232017 17381 13.35 2013 – 2017 5 Space Surveillance Telescope, Atom Site
11 291 199358 46466 4.29 2001 – 2021 21 LPL/Spacewatch II
12 704 161841 16251 9.96 1981 – 2013 33 Lincoln Laboratory ETS, New Mexico
13 568 151365 21381 7.08 1989 – 2021 33 Mauna Kea
14 644 146447 24503 5.98 2001 – 2007 7 Palomar Mountain/NEAT
15 H21 135617 17262 7.86 2009 – 2021 13 Astronomical Research Observatory, Westfield
Sum 1116 30143023 703002 42.88 1873 – 2021 149 1116 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 12424759 567553 21.89 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 8853170 513428 17.24 2004 – 2021 18 Mt. Lemmon Survey
3 691 1532028 256263 5.98 1985 – 2021 37 Steward Observatory, Kitt Peak-Spacewatch
4 F52 1715676 233206 7.36 2014 – 2021 8 Pan-STARRS 2, Haleakala
5 703 562460 67711 8.31 1998 – 2021 24 Catalina Sky Survey
6 D29 241951 56229 4.30 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
7 291 199358 46466 4.29 2001 – 2021 21 LPL/Spacewatch II
8 I41 556967 46394 12.01 2002 – 2021 20 Palomar Mountain--ZTF
9 W84 727970 39792 18.29 2012 – 2021 10 Cerro Tololo-DECam
10 C51 349320 32413 10.78 2010 – 2021 12 WISE
11 645 78371 26968 2.91 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
12 644 146447 24503 5.98 2001 – 2007 7 Palomar Mountain/NEAT
13 807 109284 22768 4.80 1988 – 2021 34 Cerro Tololo Observatory, La Serena
14 568 151365 21381 7.08 1989 – 2021 33 Mauna Kea
15 V00 89541 21157 4.23 2019 – 2021 3 Kitt Peak-Bok
Sum 1116 30143023 703002 42.88 1873 – 2021 149 1116 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  
1 217 320 1 320.00 2021 – 2021 1 Assah
2 L50 296 1 296.00 2019 – 2019 1 GenShtab Observatory, Nauchnij
3 A84 1286 11 116.91 2002 – 2013 12 TUBITAK National Observatory
4 Z73 349 3 116.33 2015 – 2017 3 Observatorio Nuevos Horizontes, Camas
5 E09 177 2 88.50 2008 – 2009 2 Oakley Southern Sky Observatory, Coonabarabran
6 I27 1274 16 79.63 2010 – 2015 6 Barred Owl Observatory, Carp
7 H78 463 6 77.17 2010 – 2017 8 University of Narino Observatory, Pasto
8 C40 656 9 72.89 2012 – 2021 10 Kuban State University Astrophysical Observatory
9 B30 236 4 59.00 2007 – 2007 1 Szamotuly-Galowo
10 W08 46 1 46.00 2017 – 2017 1 Jimginny Observatory, Naperville
11 B92 41 1 41.00 2017 – 2017 1 Chinon
12 H25 41 1 41.00 2009 – 2009 1 Harvest Moon Observatory, Northfield
13 I23 80 2 40.00 2010 – 2010 1 Frosty Cold Observatory, Mash Harbor
14 258 3432 89 38.56 2018 – 2021 4 Gaia
15 A38 115 3 38.33 2003 – 2006 4 Campocatino Automated Telescope, Collepardo
Sum 1116 30143023 703002 42.88 1873 – 2021 149 1116 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 1295 755 1.72 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 66 49 1.35 1906 – 1961 56 Lowell Observatory, Flagstaff
11 803 25 22 1.14 1906 – 1910 5 Taunton
12 084 1281 108 11.86 1906 – 2010 105 Pulkovo
13 078 178 166 1.07 1911 – 1954 44 Johannesburg
14 662 68 29 2.34 1911 – 2004 94 Lick Observatory, Mount Hamilton
15 799 27 27 1.00 1912 – 1914 3 Winchester
Sum 1116 30143023 703002 42.88 1873 – 2021 149 1116 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 1295 755 1.72 1891 – 2013 123 Heidelberg-Konigstuhl
2 094 511 221 2.31 1912 – 2020 109 Crimea-Simeis
3 084 1281 108 11.86 1906 – 2010 105 Pulkovo
4 006 251 34 7.38 1914 – 2018 105 Fabra Observatory, Barcelona
5 754 684 154 4.44 1924 – 2018 95 Yerkes Observatory, Williams Bay
6 662 68 29 2.34 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 1560 545 2.86 1924 – 2014 91 Uccle
9 119 93 52 1.79 1938 – 2021 84 Abastuman
10 186 239 32 7.47 1942 – 2021 80 Kitab
11 073 255 36 7.08 1943 – 2021 79 Bucharest
12 672 7 4 1.75 1926 – 2003 78 Mount Wilson
13 711 9381 2307 4.07 1950 – 2021 72 McDonald Observatory, Fort Davis
14 675 1815 497 3.65 1952 – 2021 70 Palomar Mountain
15 057 71 40 1.77 1937 – 2004 68 Belgrade
Sum 1116 30143023 703002 42.88 1873 – 2021 149 1116 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 4440426 1302806 3.41 2009 – 2021 13 Pan-STARRS 1, Haleakala
2 G96 2234267 577832 3.87 2004 – 2021 18 Mt. Lemmon Survey
3 W84 668557 74166 9.01 2012 – 2021 10 Cerro Tololo-DECam
4 691 443648 147467 3.01 1990 – 2021 32 Steward Observatory, Kitt Peak-Spacewatch
5 703 197296 64355 3.07 1998 – 2021 24 Catalina Sky Survey
6 F52 173244 51921 3.34 2014 – 2021 8 Pan-STARRS 2, Haleakala
7 644 106444 35547 2.99 2001 – 2010 10 Palomar Mountain/NEAT
8 699 92386 28677 3.22 1998 – 2008 11 Lowell Observatory-LONEOS
9 695 84484 39340 2.15 1995 – 2020 26 Kitt Peak
10 807 79201 38341 2.07 1995 – 2021 27 Cerro Tololo Observatory, La Serena
11 568 77615 19043 4.08 1993 – 2021 29 Mauna Kea
12 309 60074 6988 8.60 2000 – 2021 22 Cerro Paranal
13 V00 51786 13395 3.87 2019 – 2021 3 Kitt Peak-Bok
14 645 40243 19803 2.03 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
15 291 37076 12451 2.98 2001 – 2021 21 LPL/Spacewatch II
Sum 727 9116090 2531537 3.60 1950 – 2021 72 727 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 4440426 1302806 3.41 2009 – 2021 13 Pan-STARRS 1, Haleakala
2 G96 2234267 577832 3.87 2004 – 2021 18 Mt. Lemmon Survey
3 691 443648 147467 3.01 1990 – 2021 32 Steward Observatory, Kitt Peak-Spacewatch
4 W84 668557 74166 9.01 2012 – 2021 10 Cerro Tololo-DECam
5 703 197296 64355 3.07 1998 – 2021 24 Catalina Sky Survey
6 F52 173244 51921 3.34 2014 – 2021 8 Pan-STARRS 2, Haleakala
7 695 84484 39340 2.15 1995 – 2020 26 Kitt Peak
8 807 79201 38341 2.07 1995 – 2021 27 Cerro Tololo Observatory, La Serena
9 644 106444 35547 2.99 2001 – 2010 10 Palomar Mountain/NEAT
10 699 92386 28677 3.22 1998 – 2008 11 Lowell Observatory-LONEOS
11 645 40243 19803 2.03 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
12 568 77615 19043 4.08 1993 – 2021 29 Mauna Kea
13 V00 51786 13395 3.87 2019 – 2021 3 Kitt Peak-Bok
14 291 37076 12451 2.98 2001 – 2021 21 LPL/Spacewatch II
15 I41 24458 9344 2.62 2002 – 2021 20 Palomar Mountain--ZTF
Sum 727 9116090 2531537 3.60 1950 – 2021 72 727 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 N42 100 3 33.33 2014 – 2021 8 Tien-Shan Astronomical Observatory
2 258 1193 41 29.10 2018 – 2021 4 Gaia
3 L32 52 2 26.00 2016 – 2016 1 Korea Microlensing Telescope Network-SAAO
4 O49 21 1 21.00 2020 – 2020 1 Purple Mountain Observatory, Yaoan Station
5 B41 18 1 18.00 2018 – 2018 1 Zlin Observatory
6 169 16 1 16.00 2012 – 2012 1 Airali Observatory
7 115 16 1 16.00 1998 – 1998 1 Zelenchukskaya
8 W79 30 2 15.00 2021 – 2021 1 Cerro Tololo-LCO Aqawan B #1
9 J13 1660 121 13.72 2011 – 2020 10 La Palma-Liverpool Telescope
10 740 66 5 13.20 2004 – 2004 1 SFA Observatory, Nacogdoches
11 Z57 26 2 13.00 2021 – 2021 1 Observatorio Zuben, Alhaurin de la Torre
12 181 52 4 13.00 2018 – 2018 1 Observatoire des Makes, Saint-Louis
13 J70 13 1 13.00 2007 – 2008 2 Obs. Astronomico Vega del Thader, El Palmar
14 T03 13 1 13.00 2021 – 2021 1 Haleakala-LCO Clamshell #3
15 D89 12 1 12.00 2011 – 2011 1 Yamagata
Sum 727 9116090 2531537 3.60 1950 – 2021 72 727 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  
1 675 166 49 3.39 1950 – 2014 65 Palomar Mountain
2 261 51 26 1.96 1950 – 1998 49 Palomar Mountain-DSS
3 260 66 34 1.94 1974 – 1995 22 Siding Spring Observatory-DSS
4 413 350 178 1.97 1977 – 2007 31 Siding Spring Observatory
5 046 24 5 4.80 1982 – 2017 36 Klet Observatory, Ceske Budejovice
6 098 64 34 1.88 1983 – 1998 16 Asiago Observatory, Cima Ekar
7 071 459 110 4.17 1988 – 2020 33 NAO Rozhen, Smolyan
8 809 5405 1841 2.94 1988 – 2013 26 European Southern Observatory, La Silla
9 691 443648 147467 3.01 1990 – 2021 32 Steward Observatory, Kitt Peak-Spacewatch
10 511 77 22 3.50 1991 – 2021 31 Haute Provence
11 095 759 569 1.33 1991 – 2021 31 Crimea-Nauchnij
12 503 1 1 1.00 1991 – 1991 1 Cambridge
13 399 66 33 2.00 1992 – 1995 4 Kushiro
14 877 6 3 2.00 1992 – 1993 2 Okutama
15 364 4 2 2.00 1992 – 1992 1 YCPM Kagoshima Station
Sum 727 9116090 2531537 3.60 1950 – 2021 72 727 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  
1 675 166 49 3.39 1950 – 2014 65 Palomar Mountain
2 261 51 26 1.96 1950 – 1998 49 Palomar Mountain-DSS
3 046 24 5 4.80 1982 – 2017 36 Klet Observatory, Ceske Budejovice
4 071 459 110 4.17 1988 – 2020 33 NAO Rozhen, Smolyan
5 691 443648 147467 3.01 1990 – 2021 32 Steward Observatory, Kitt Peak-Spacewatch
6 413 350 178 1.97 1977 – 2007 31 Siding Spring Observatory
7 511 77 22 3.50 1991 – 2021 31 Haute Provence
8 095 759 569 1.33 1991 – 2021 31 Crimea-Nauchnij
9 033 175 62 2.82 1992 – 2021 30 Karl Schwarzschild Observatory, Tautenburg
10 568 77615 19043 4.08 1993 – 2021 29 Mauna Kea
11 381 102 14 7.29 1993 – 2021 29 Tokyo-Kiso
12 010 211 76 2.78 1992 – 2019 28 Caussols
13 304 106 24 4.42 1994 – 2021 28 Las Campanas Observatory
14 950 14089 2864 4.92 1994 – 2021 28 La Palma
15 807 79201 38341 2.07 1995 – 2021 27 Cerro Tololo Observatory, La Serena
Sum 727 9116090 2531537 3.60 1950 – 2021 72 727 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 43488438 593647 73.26 2004 – 2021 18 Mt. Lemmon Survey
2 F51 42148757 594382 70.91 2008 – 2021 14 Pan-STARRS 1, Haleakala
3 704 32661977 360082 90.71 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
4 703 30635279 447300 68.49 1998 – 2021 24 Catalina Sky Survey
5 T08 18857813 264606 71.27 2014 – 2021 8 ATLAS-MLO, Mauna Loa
6 T05 17710059 255006 69.45 2015 – 2021 7 ATLAS-HKO, Haleakala
7 G45 13930170 338795 41.12 2011 – 2017 7 Space Surveillance Telescope, Atom Site
8 I41 12640003 351071 36.00 2002 – 2021 20 Palomar Mountain--ZTF
9 691 12507867 554862 22.54 1984 – 2021 38 Steward Observatory, Kitt Peak-Spacewatch
10 D29 8792366 443138 19.84 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
11 F52 8318033 507017 16.41 2014 – 2021 8 Pan-STARRS 2, Haleakala
12 699 5353276 259132 20.66 1998 – 2008 11 Lowell Observatory-LONEOS
13 644 3864989 297317 13.00 1990 – 2010 21 Palomar Mountain/NEAT
14 C51 3269537 162485 20.12 2010 – 2021 12 WISE
15 E12 2225069 168786 13.18 2003 – 2013 11 Siding Spring Survey
Sum 2133 278248120 594945 467.69 1801 – 2021 221 2133 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 42148757 594382 70.91 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 43488438 593647 73.26 2004 – 2021 18 Mt. Lemmon Survey
3 691 12507867 554862 22.54 1984 – 2021 38 Steward Observatory, Kitt Peak-Spacewatch
4 F52 8318033 507017 16.41 2014 – 2021 8 Pan-STARRS 2, Haleakala
5 703 30635279 447300 68.49 1998 – 2021 24 Catalina Sky Survey
6 D29 8792366 443138 19.84 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
7 704 32661977 360082 90.71 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
8 I41 12640003 351071 36.00 2002 – 2021 20 Palomar Mountain--ZTF
9 G45 13930170 338795 41.12 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 644 3864989 297317 13.00 1990 – 2010 21 Palomar Mountain/NEAT
11 T08 18857813 264606 71.27 2014 – 2021 8 ATLAS-MLO, Mauna Loa
12 699 5353276 259132 20.66 1998 – 2008 11 Lowell Observatory-LONEOS
13 T05 17710059 255006 69.45 2015 – 2021 7 ATLAS-HKO, Haleakala
14 J43 2157746 222240 9.71 2007 – 2021 15 Oukaimeden Observatory, Marrakech
15 E12 2225069 168786 13.18 2003 – 2013 11 Siding Spring Survey
Sum 2133 278248120 594945 467.69 1801 – 2021 221 2133 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  
1 874 4420 2 2210.00 1995 – 2013 19 Observatorio do Pico dos Dias, Itajuba
2 O44 453 2 226.50 2012 – 2013 2 Lijiang Station, Yunnan Observatories
3 C40 14181 70 202.59 2010 – 2021 12 Kuban State University Astrophysical Observatory
4 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
5 217 367 2 183.50 2021 – 2021 1 Assah
6 C57 767716 4481 171.33 2018 – 2021 4 TESS
7 W78 331 2 165.50 2017 – 2018 2 Clay Telescope, Harvard University
8 L98 5201 32 162.53 2017 – 2018 2 La Sagra Observatory, Puebla de Don Fadrique
9 708 138 1 138.00 1900 – 1908 9 Chamberlin Observatory, Denver
10 Y28 2968 22 134.91 2011 – 2018 8 OASI, Nova Itacuruba
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
14 780 111 1 111.00 1931 – 1931 1 Leander McCormick Observatory, Charlottesville
15 193 1021 10 102.10 2013 – 2020 8 Sanglok
Sum 2133 278248120 594945 467.69 1801 – 2021 221 2133 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 2880 56 51.43 1802 – 2021 220 Geocentric
3 528 164 18 9.11 1804 – 1983 180 Gottingen
4 541 165 33 5.00 1804 – 2000 197 Prague
5 283 4 1 4.00 1804 – 1804 1 Bremen
6 027 127 33 3.85 1804 – 1942 139 Milan
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
12 533 683 102 6.70 1829 – 1923 95 Padua
13 062 8586 1800 4.77 1830 – 1957 128 Turku
14 961 4 1 4.00 1830 – 1830 1 City Observatory, Calton Hill, Edinburgh
15 503 134 16 8.38 1830 – 1989 160 Cambridge
Sum 2133 278248120 594945 467.69 1801 – 2021 221 2133 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 2880 56 51.43 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 23593 1067 22.11 1846 – 2013 168 Pulkovo
5 503 134 16 8.38 1830 – 1989 160 Cambridge
6 027 127 33 3.85 1804 – 1942 139 Milan
7 784 355 60 5.92 1866 – 2002 137 Stull Observatory, Alfred University
8 035 2862 71 40.31 1835 – 1970 136 Copenhagen
9 822 1651 226 7.31 1885 – 2020 136 Cordoba
10 062 8586 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 17194 2684 6.41 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 2133 278248120 594945 467.69 1801 – 2021 221 2133 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 59031609 2465608 23.94 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 54593592 1685812 32.38 2004 – 2021 18 Mt. Lemmon Survey
3 704 32851239 376977 87.14 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
4 703 31417644 580225 54.15 1998 – 2021 24 Catalina Sky Survey
5 T08 19020149 283745 67.03 2014 – 2021 8 ATLAS-MLO, Mauna Loa
6 T05 17852951 272769 65.45 2015 – 2021 7 ATLAS-HKO, Haleakala
7 691 14492129 959188 15.11 1984 – 2021 38 Steward Observatory, Kitt Peak-Spacewatch
8 G45 14170180 356493 39.75 2011 – 2017 7 Space Surveillance Telescope, Atom Site
9 I41 13224107 406985 32.49 2002 – 2021 20 Palomar Mountain--ZTF
10 F52 10210170 792448 12.88 2014 – 2021 8 Pan-STARRS 2, Haleakala
11 D29 9055228 505526 17.91 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
12 699 5484910 295209 18.58 1998 – 2009 12 Lowell Observatory-LONEOS
13 644 4120279 357598 11.52 1990 – 2010 21 Palomar Mountain/NEAT
14 C51 3624829 195326 18.56 2010 – 2021 12 WISE
15 W84 3193046 224805 14.20 2012 – 2021 10 Cerro Tololo-DECam
Sum 2267 318734844 3833765 83.14 1661 – 2021 361 2267 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 59031609 2465608 23.94 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 54593592 1685812 32.38 2004 – 2021 18 Mt. Lemmon Survey
3 691 14492129 959188 15.11 1984 – 2021 38 Steward Observatory, Kitt Peak-Spacewatch
4 F52 10210170 792448 12.88 2014 – 2021 8 Pan-STARRS 2, Haleakala
5 703 31417644 580225 54.15 1998 – 2021 24 Catalina Sky Survey
6 D29 9055228 505526 17.91 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
7 I41 13224107 406985 32.49 2002 – 2021 20 Palomar Mountain--ZTF
8 704 32851239 376977 87.14 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
9 644 4120279 357598 11.52 1990 – 2010 21 Palomar Mountain/NEAT
10 G45 14170180 356493 39.75 2011 – 2017 7 Space Surveillance Telescope, Atom Site
11 699 5484910 295209 18.58 1998 – 2009 12 Lowell Observatory-LONEOS
12 T08 19020149 283745 67.03 2014 – 2021 8 ATLAS-MLO, Mauna Loa
13 T05 17852951 272769 65.45 2015 – 2021 7 ATLAS-HKO, Haleakala
14 J43 2258887 240609 9.39 2007 – 2021 15 Oukaimeden Observatory, Marrakech
15 W84 3193046 224805 14.20 2012 – 2021 10 Cerro Tololo-DECam
Sum 2267 318734844 3833765 83.14 1661 – 2021 361 2267 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  
1 874 4857 12 404.75 1983 – 2013 31 Observatorio do Pico dos Dias, Itajuba
2 C40 26832 108 248.44 2010 – 2021 12 Kuban State University Astrophysical Observatory
3 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
4 217 715 4 178.75 1984 – 2021 38 Assah
5 C57 773525 4558 169.71 2018 – 2021 4 TESS
6 W78 331 2 165.50 2017 – 2018 2 Clay Telescope, Harvard University
7 L98 5201 32 162.53 2017 – 2018 2 La Sagra Observatory, Puebla de Don Fadrique
8 708 489 4 122.25 1900 – 1911 12 Chamberlin Observatory, Denver
9 248 5641 48 117.52 1989 – 1993 5 Hipparcos
10 G39 5044 45 112.09 2012 – 2021 10 ROAD, San Pedro de Atacama
11 778 1995 18 110.83 1910 – 1990 81 Allegheny Observatory, Pittsburgh
12 O44 471 5 94.20 2012 – 2017 6 Lijiang Station, Yunnan Observatories
13 A46 9181 98 93.68 2002 – 2006 5 Lelekovice
14 C55 371 4 92.75 2015 – 2016 2 Kepler
15 704 32851239 376977 87.14 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
Sum 2267 318734844 3833765 83.14 1661 – 2021 361 2267 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 A51 35 1 35.00 1661 – 1661 1 Danzig
2 324 22 5 4.40 1737 – 1985 249 Peking Observatory, Shaho Station
3 535 52 7 7.43 1801 – 1903 103 Palermo
4 500 3118 101 30.87 1802 – 2021 220 Geocentric
5 541 206 40 5.15 1804 – 2017 214 Prague
6 528 243 28 8.68 1804 – 1986 183 Gottingen
7 027 166 39 4.26 1804 – 1942 139 Milan
8 283 4 1 4.00 1804 – 1804 1 Bremen
9 007 660 135 4.89 1819 – 1950 132 Paris
10 281 2 1 2.00 1819 – 1819 1 Bologna
11 058 547 79 6.92 1820 – 1939 120 Kaliningrad
12 548 685 98 6.99 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
15 524 49 7 7.00 1827 – 1969 143 Mannheim
Sum 2267 318734844 3833765 83.14 1661 – 2021 361 2267 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  
1 324 22 5 4.40 1737 – 1985 249 Peking Observatory, Shaho Station
2 500 3118 101 30.87 1802 – 2021 220 Geocentric
3 541 206 40 5.15 1804 – 2017 214 Prague
4 528 243 28 8.68 1804 – 1986 183 Gottingen
5 084 27105 1231 22.02 1846 – 2013 168 Pulkovo
6 503 357 57 6.26 1830 – 1993 164 Cambridge
7 189 258 48 5.38 1861 – 2019 159 Geneva (before 1967)
8 051 1080 45 24.00 1836 – 1987 152 Royal Observatory, Cape of Good Hope
9 075 841 275 3.06 1835 – 1985 151 Tartu
10 995 124 14 8.86 1850 – 1997 148 Durham
11 784 515 89 5.79 1866 – 2012 147 Stull Observatory, Alfred University
12 062 8796 1853 4.75 1830 – 1973 144 Turku
13 524 49 7 7.00 1827 – 1969 143 Mannheim
14 089 20365 757 26.90 1882 – 2021 140 Nikolaev
15 027 166 39 4.26 1804 – 1942 139 Milan
Sum 2267 318734844 3833765 83.14 1661 – 2021 361 2267 names