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 3952 142 27.83 1984 – 2021 38 Maunakea
2 415 2035 15 135.67 2004 – 2010 7 Kambah
3 T08 1843 11 167.55 2017 – 2022 6 ATLAS-MLO, Mauna Loa
4 T05 1718 10 171.80 2016 – 2022 7 ATLAS-HKO, Haleakala
5 704 1662 9 184.67 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
6 689 1305 8 163.13 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
7 G36 915 11 83.18 2011 – 2018 8 Calar Alto-CASADO
8 691 662 15 44.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
9 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
10 W84 575 30 19.17 2013 – 2021 9 Cerro Tololo-DECam
11 E07 558 17 32.82 2011 – 2015 5 Murrumbateman
12 F51 554 22 25.18 2011 – 2021 11 Pan-STARRS 1, Haleakala
13 673 457 9 50.78 1968 – 2017 50 Table Mountain Observatory, Wrightwood
14 D29 452 12 37.67 2007 – 2022 16 Purple Mountain Observatory, XuYi Station
15 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
Sum 152 25224 147 171.59 1894 – 2022 129 152 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 3952 142 27.83 1984 – 2021 38 Maunakea
2 807 378 69 5.48 1998 – 2018 21 Cerro Tololo Observatory, La Serena
3 304 351 49 7.16 2002 – 2021 20 Las Campanas Observatory
4 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
5 W84 575 30 19.17 2013 – 2021 9 Cerro Tololo-DECam
6 695 157 29 5.41 1969 – 2014 46 Kitt Peak
7 809 180 22 8.18 1981 – 2013 33 European Southern Observatory, La Silla
8 F51 554 22 25.18 2011 – 2021 11 Pan-STARRS 1, Haleakala
9 950 78 19 4.11 1997 – 2011 15 La Palma
10 309 128 18 7.11 2000 – 2021 22 Cerro Paranal
11 E07 558 17 32.82 2011 – 2015 5 Murrumbateman
12 G96 346 17 20.35 2005 – 2021 17 Mt. Lemmon Survey
13 691 662 15 44.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
14 415 2035 15 135.67 2004 – 2010 7 Kambah
15 D29 452 12 37.67 2007 – 2022 16 Purple Mountain Observatory, XuYi Station
Sum 152 25224 147 171.59 1894 – 2022 129 152 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 1662 9 184.67 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
4 T05 1718 10 171.80 2016 – 2022 7 ATLAS-HKO, Haleakala
5 T08 1843 11 167.55 2017 – 2022 6 ATLAS-MLO, Mauna Loa
6 689 1305 8 163.13 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
7 415 2035 15 135.67 2004 – 2010 7 Kambah
8 337 115 1 115.00 2003 – 2004 2 Sheshan, formerly Zo-Se
9 511 170 2 85.00 1998 – 1999 2 Haute Provence
10 G36 915 11 83.18 2011 – 2018 8 Calar Alto-CASADO
11 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
12 G45 426 7 60.86 2014 – 2016 3 Space Surveillance Telescope, Atom Site
13 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
14 673 457 9 50.78 1968 – 2017 50 Table Mountain Observatory, Wrightwood
15 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
Sum 152 25224 147 171.59 1894 – 2022 129 152 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
10 094 1 1 1.00 1929 – 1929 1 Crimea-Simeis
11 690 23 3 7.67 1929 – 1981 53 Lowell Observatory, Flagstaff
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 152 25224 147 171.59 1894 – 2022 129 152 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
6 673 457 9 50.78 1968 – 2017 50 Table Mountain Observatory, Wrightwood
7 695 157 29 5.41 1969 – 2014 46 Kitt Peak
8 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
9 568 3952 142 27.83 1984 – 2021 38 Maunakea
10 688 11 6 1.83 1982 – 2017 36 Lowell Observatory, Anderson Mesa Station
11 672 199 8 24.88 1916 – 1951 36 Mount Wilson
12 693 25 6 4.17 1967 – 2000 34 Catalina Station, Tucson
13 809 180 22 8.18 1981 – 2013 33 European Southern Observatory, La Silla
14 691 662 15 44.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
15 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
Sum 152 25224 147 171.59 1894 – 2022 129 152 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 9625 2 4812.50 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 2191 60 36.52 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 F51 262 17 15.41 2010 – 2018 9 Pan-STARRS 1, Haleakala
Sum 195 34151 199 171.61 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 2191 60 36.52 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 34151 199 171.61 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 9625 2 4812.50 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 34151 199 171.61 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
13 596 8 1 8.00 2001 – 2001 1 Colleverde di Guidonia
14 670 8 1 8.00 2001 – 2001 1 Camarillo
15 859 19 3 6.33 2001 – 2004 4 Wykrota Observatory-CEAMIG
Sum 195 34151 199 171.61 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 2191 60 36.52 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
12 246 26 3 8.67 2005 – 2017 13 Klet Observatory-KLENOT
13 970 40 5 8.00 2005 – 2017 13 Chelmsford
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 34151 199 171.61 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 36902 1988 18.56 1996 – 2020 25 SOHO
2 585 33711 562 59.98 1986 – 2022 37 Kyiv comet station
3 T08 32554 424 76.78 2017 – 2022 6 ATLAS-MLO, Mauna Loa
4 T05 29310 475 61.71 2015 – 2022 8 ATLAS-HKO, Haleakala
5 349 27696 907 30.54 1999 – 2022 24 Ageo
6 704 25777 634 40.66 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
7 703 24538 844 29.07 1998 – 2022 25 Catalina Sky Survey
8 C23 24295 476 51.04 2010 – 2022 13 Olmen
9 A77 22519 761 29.59 2005 – 2022 18 Observatoire Chante-Perdrix, Dauban
10 H45 22100 399 55.39 2005 – 2022 18 Arkansas Sky Obs., Petit Jean Mountain South
11 958 20384 334 61.03 1997 – 2022 26 Observatoire de Dax
12 G96 19777 917 21.57 2004 – 2022 19 Mt. Lemmon Survey
13 213 19365 677 28.60 2001 – 2022 22 Observatorio Montcabre
14 F51 18653 897 20.79 2009 – 2022 14 Pan-STARRS 1, Haleakala
15 B96 17928 425 42.18 2009 – 2022 14 Brixiis Observatory, Kruibeke
Sum 1540 1276176 4026 316.98 1661 – 2022 362 1540 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 36902 1988 18.56 1996 – 2020 25 SOHO
2 215 11631 1169 9.95 2001 – 2022 22 Buchloe
3 H06 12677 953 13.30 2004 – 2022 19 iTelescope Observatory, Mayhill
4 G96 19777 917 21.57 2004 – 2022 19 Mt. Lemmon Survey
5 349 27696 907 30.54 1999 – 2022 24 Ageo
6 F51 18653 897 20.79 2009 – 2022 14 Pan-STARRS 1, Haleakala
7 372 8694 864 10.06 1973 – 2021 49 Geisei
8 204 7571 854 8.87 2001 – 2022 22 Schiaparelli Observatory
9 703 24538 844 29.07 1998 – 2022 25 Catalina Sky Survey
10 A77 22519 761 29.59 2005 – 2022 18 Observatoire Chante-Perdrix, Dauban
11 Q62 8743 683 12.80 2012 – 2022 11 iTelescope Observatory, Siding Spring
12 213 19365 677 28.60 2001 – 2022 22 Observatorio Montcabre
13 A71 9249 664 13.93 2005 – 2022 18 Stixendorf
14 130 2739 635 4.31 1997 – 2022 26 Lumezzane
15 704 25777 634 40.66 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
Sum 1540 1276176 4026 316.98 1661 – 2022 362 1540 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 9146 13 703.54 2018 – 2021 4 TESS
2 G39 4937 31 159.26 2014 – 2021 8 ROAD, San Pedro de Atacama
3 C40 6019 38 158.39 2012 – 2022 11 Kuban State University Astrophysical Observatory
4 J92 138 1 138.00 2004 – 2004 1 Beaconsfield
5 L28 260 2 130.00 2018 – 2020 3 ISON-Castelgrande Observatory
6 K81 2919 24 121.63 2018 – 2022 5 P.M.P.H.R. Deep Sky Observatory, Atina
7 708 351 3 117.00 1906 – 1911 6 Chamberlin Observatory, Denver
8 I08 104 1 104.00 2011 – 2011 1 Alianza S4, Cerro Burek
9 A46 9089 89 102.12 2002 – 2006 5 Lelekovice
10 334 204 2 102.00 1973 – 1986 14 Tsingtao
11 190 3008 31 97.03 1969 – 2022 54 Gissar
12 I80 97 1 97.00 2019 – 2019 1 Rose Cottage Observatory, Keighley
13 134 2976 37 80.43 2013 – 2022 10 Groszschwabhausen
14 813 79 1 79.00 1909 – 1910 2 Santiago-Quinta Normal (1862-1920)
15 T08 32554 424 76.78 2017 – 2022 6 ATLAS-MLO, Mauna Loa
Sum 1540 1276176 4026 316.98 1661 – 2022 362 1540 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 1540 1276176 4026 316.98 1661 – 2022 362 1540 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
5 797 26 3 8.67 1879 – 2022 144 Yale Observatory, New Haven
6 189 105 16 6.56 1880 – 2019 140 Geneva (before 1967)
7 089 1888 58 32.55 1882 – 2021 140 Nikolaev
8 524 32 4 8.00 1835 – 1969 135 Mannheim
9 822 711 43 16.53 1885 – 2019 135 Cordoba
10 084 2230 55 40.55 1877 – 2007 131 Pulkovo
11 995 33 3 11.00 1870 – 1997 128 Durham
12 541 37 6 6.17 1894 – 2017 124 Prague
13 105 162 11 14.73 1879 – 1997 119 Moscow
14 662 1191 122 9.76 1889 – 2007 119 Lick Observatory, Mount Hamilton
15 012 547 47 11.64 1894 – 2012 119 Uccle
Sum 1540 1276176 4026 316.98 1661 – 2022 362 1540 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 13916358 648796 21.45 2008 – 2022 15 Pan-STARRS 1, Haleakala
2 G96 10349100 586986 17.63 2004 – 2022 19 Mt. Lemmon Survey
3 F52 4104289 408916 10.04 2014 – 2022 9 Pan-STARRS 2, Haleakala
4 W84 1616203 102639 15.75 2012 – 2022 11 Cerro Tololo-DECam
5 691 1479099 258722 5.72 1985 – 2022 38 Steward Observatory, Kitt Peak-Spacewatch
6 703 566077 66548 8.51 1998 – 2022 25 Catalina Sky Survey
7 I41 550958 47552 11.59 2002 – 2022 21 Palomar Mountain--ZTF
8 D29 409178 80558 5.08 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
9 C51 342092 31587 10.83 2010 – 2022 13 WISE
10 G45 326344 24302 13.43 2012 – 2017 6 Space Surveillance Telescope, Atom Site
11 V00 243225 54438 4.47 2019 – 2022 4 Kitt Peak-Bok
12 291 199985 46868 4.27 2001 – 2022 22 LPL/Spacewatch II
13 568 164644 24932 6.60 1989 – 2022 34 Maunakea
14 I52 161587 18077 8.94 2012 – 2022 11 Steward Observatory, Mt. Lemmon Station
15 H21 147348 19533 7.54 2009 – 2022 14 Astronomical Research Observatory, Westfield
Sum 1164 36922888 782576 47.18 1873 – 2022 150 1164 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 13916358 648796 21.45 2008 – 2022 15 Pan-STARRS 1, Haleakala
2 G96 10349100 586986 17.63 2004 – 2022 19 Mt. Lemmon Survey
3 F52 4104289 408916 10.04 2014 – 2022 9 Pan-STARRS 2, Haleakala
4 691 1479099 258722 5.72 1985 – 2022 38 Steward Observatory, Kitt Peak-Spacewatch
5 W84 1616203 102639 15.75 2012 – 2022 11 Cerro Tololo-DECam
6 D29 409178 80558 5.08 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
7 703 566077 66548 8.51 1998 – 2022 25 Catalina Sky Survey
8 V00 243225 54438 4.47 2019 – 2022 4 Kitt Peak-Bok
9 I41 550958 47552 11.59 2002 – 2022 21 Palomar Mountain--ZTF
10 291 199985 46868 4.27 2001 – 2022 22 LPL/Spacewatch II
11 C51 342092 31587 10.83 2010 – 2022 13 WISE
12 645 78499 27552 2.85 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
13 807 125103 26701 4.69 1988 – 2022 35 Cerro Tololo Observatory, La Serena
14 568 164644 24932 6.60 1989 – 2022 34 Maunakea
15 G45 326344 24302 13.43 2012 – 2017 6 Space Surveillance Telescope, Atom Site
Sum 1164 36922888 782576 47.18 1873 – 2022 150 1164 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, Nauchnij
2 A84 1285 11 116.82 2002 – 2013 12 TUBITAK National Observatory
3 Z73 349 3 116.33 2015 – 2017 3 Observatorio Nuevos Horizontes, Camas
4 I27 1257 14 89.79 2010 – 2015 6 Barred Owl Observatory, Carp
5 E09 177 2 88.50 2008 – 2009 2 Oakley Southern Sky Observatory, Coonabarabran
6 C57 88 1 88.00 2021 – 2021 1 TESS
7 H78 463 6 77.17 2010 – 2017 8 University of Narino Observatory, Pasto
8 B30 236 4 59.00 2007 – 2007 1 Szamotuly-Galowo
9 270 52 1 52.00 2022 – 2022 1 Unistellar Network, Roving Observer
10 C54 98 2 49.00 2020 – 2020 1 New Horizons
11 O48 48 1 48.00 2021 – 2021 1 Purple Mountain Observatory, Yaoan (0.8-m)
12 W08 46 1 46.00 2017 – 2017 1 Jimginny Observatory, Naperville
13 B92 41 1 41.00 2017 – 2017 1 Chinon
14 H25 41 1 41.00 2009 – 2009 1 Harvest Moon Observatory, Northfield
15 I23 80 2 40.00 2010 – 2010 1 Frosty Cold Observatory, Mash Harbor
Sum 1164 36922888 782576 47.18 1873 – 2022 150 1164 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 65 48 1.35 1906 – 1961 56 Lowell Observatory, Flagstaff
11 803 25 22 1.14 1906 – 1910 5 Taunton
12 084 1110 89 12.47 1906 – 2010 105 Pulkovo
13 078 178 166 1.07 1911 – 1954 44 Johannesburg
14 662 62 26 2.38 1911 – 2004 94 Lick Observatory, Mount Hamilton
15 799 27 27 1.00 1912 – 1914 3 Winchester
Sum 1164 36922888 782576 47.18 1873 – 2022 150 1164 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
2 094 501 221 2.27 1912 – 2021 110 Crimea-Simeis
3 084 1110 89 12.47 1906 – 2010 105 Pulkovo
4 006 251 34 7.38 1914 – 2018 105 Fabra Observatory, Barcelona
5 754 598 152 3.93 1924 – 2018 95 Yerkes Observatory, Williams Bay
6 662 62 26 2.38 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 1333 525 2.54 1924 – 2014 91 Uccle
9 119 115 57 2.02 1938 – 2022 85 Abastuman
10 186 244 31 7.87 1942 – 2021 80 Kitab
11 073 576 71 8.11 1943 – 2022 80 Bucharest
12 672 4 3 1.33 1926 – 2003 78 Mount Wilson
13 711 9081 2241 4.05 1950 – 2021 72 McDonald Observatory, Fort Davis
14 675 1673 470 3.56 1952 – 2021 70 Palomar Mountain
15 057 71 40 1.77 1937 – 2004 68 Belgrade
Sum 1164 36922888 782576 47.18 1873 – 2022 150 1164 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 3713123 1094222 3.39 2009 – 2022 14 Pan-STARRS 1, Haleakala
2 G96 1697311 439046 3.87 2004 – 2022 19 Mt. Lemmon Survey
3 W84 1667965 304407 5.48 2002 – 2022 21 Cerro Tololo-DECam
4 F52 631220 189040 3.34 2014 – 2022 9 Pan-STARRS 2, Haleakala
5 691 348923 115351 3.02 1990 – 2022 33 Steward Observatory, Kitt Peak-Spacewatch
6 703 158363 49233 3.22 1998 – 2022 25 Catalina Sky Survey
7 644 103334 34508 2.99 2001 – 2010 10 Palomar Mountain/NEAT
8 V00 102647 26543 3.87 2019 – 2022 4 Kitt Peak-Bok
9 699 89650 27228 3.29 1998 – 2008 11 Lowell Observatory-LONEOS
10 568 80765 20215 4.00 1993 – 2022 30 Maunakea
11 695 76640 35719 2.15 1995 – 2021 27 Kitt Peak
12 807 72458 35251 2.06 1997 – 2022 26 Cerro Tololo Observatory, La Serena
13 309 54136 6332 8.55 2000 – 2022 23 Cerro Paranal
14 645 33724 16533 2.04 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
15 291 27212 9081 3.00 2001 – 2022 22 LPL/Spacewatch II
Sum 739 9113888 2476534 3.68 1950 – 2022 73 739 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 3713123 1094222 3.39 2009 – 2022 14 Pan-STARRS 1, Haleakala
2 G96 1697311 439046 3.87 2004 – 2022 19 Mt. Lemmon Survey
3 W84 1667965 304407 5.48 2002 – 2022 21 Cerro Tololo-DECam
4 F52 631220 189040 3.34 2014 – 2022 9 Pan-STARRS 2, Haleakala
5 691 348923 115351 3.02 1990 – 2022 33 Steward Observatory, Kitt Peak-Spacewatch
6 703 158363 49233 3.22 1998 – 2022 25 Catalina Sky Survey
7 695 76640 35719 2.15 1995 – 2021 27 Kitt Peak
8 807 72458 35251 2.06 1997 – 2022 26 Cerro Tololo Observatory, La Serena
9 644 103334 34508 2.99 2001 – 2010 10 Palomar Mountain/NEAT
10 699 89650 27228 3.29 1998 – 2008 11 Lowell Observatory-LONEOS
11 V00 102647 26543 3.87 2019 – 2022 4 Kitt Peak-Bok
12 568 80765 20215 4.00 1993 – 2022 30 Maunakea
13 645 33724 16533 2.04 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
14 291 27212 9081 3.00 2001 – 2022 22 LPL/Spacewatch II
15 309 54136 6332 8.55 2000 – 2022 23 Cerro Paranal
Sum 739 9113888 2476534 3.68 1950 – 2022 73 739 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 D08 60 1 60.00 2013 – 2013 1 Ghezz Observatory, Leontica
2 190 149 3 49.67 2019 – 2021 3 Gissar
3 N42 65 2 32.50 2014 – 2021 8 Tien-Shan Astronomical Observatory
4 270 121 4 30.25 2022 – 2022 1 Unistellar Network, Roving Observer
5 258 1336 62 21.55 2018 – 2022 5 Gaia
6 O49 21 1 21.00 2020 – 2020 1 Purple Mountain Observatory, Yaoan Station
7 B41 18 1 18.00 2018 – 2018 1 Zlin Observatory
8 181 34 2 17.00 2018 – 2018 1 Observatoire des Makes, Saint-Louis
9 115 16 1 16.00 1998 – 1998 1 Zelenchukskaya
10 169 16 1 16.00 2012 – 2012 1 Airali Observatory
11 W79 30 2 15.00 2021 – 2021 1 Cerro Tololo-LCO Aqawan B #1
12 J13 1213 90 13.48 2011 – 2018 8 La Palma-Liverpool Telescope
13 740 66 5 13.20 2004 – 2004 1 SFA Observatory, Nacogdoches
14 T03 13 1 13.00 2021 – 2021 1 Haleakala-LCO Clamshell #3
15 J70 13 1 13.00 2007 – 2008 2 Obs. Astronomico Vega del Thader, El Palmar
Sum 739 9113888 2476534 3.68 1950 – 2022 73 739 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  
1 675 153 38 4.03 1950 – 2014 65 Palomar Mountain
2 261 52 26 2.00 1951 – 1998 48 Palomar Mountain-DSS
3 260 62 31 2.00 1974 – 1995 22 Siding Spring Observatory-DSS
4 413 207 80 2.59 1977 – 2007 31 Siding Spring Observatory
5 046 24 5 4.80 1982 – 2017 36 Klet Observatory, Ceske Budejovice
6 098 60 30 2.00 1983 – 1998 16 Asiago Observatory, Cima Ekar
7 809 4334 1073 4.04 1988 – 2022 35 European Southern Observatory, La Silla
8 071 387 79 4.90 1988 – 2020 33 NAO Rozhen, Smolyan
9 691 348923 115351 3.02 1990 – 2022 33 Steward Observatory, Kitt Peak-Spacewatch
10 095 364 116 3.14 1991 – 2022 32 Crimea-Nauchnij
11 511 96 18 5.33 1991 – 2022 32 Haute Provence
12 808 461 227 2.03 1992 – 2000 9 El Leoncito
13 364 4 2 2.00 1992 – 1992 1 YCPM Kagoshima Station
14 877 6 3 2.00 1992 – 1993 2 Okutama
15 402 44 16 2.75 1992 – 1999 8 Dynic Astronomical Observatory
Sum 739 9113888 2476534 3.68 1950 – 2022 73 739 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  
1 675 153 38 4.03 1950 – 2014 65 Palomar Mountain
2 261 52 26 2.00 1951 – 1998 48 Palomar Mountain-DSS
3 046 24 5 4.80 1982 – 2017 36 Klet Observatory, Ceske Budejovice
4 809 4334 1073 4.04 1988 – 2022 35 European Southern Observatory, La Silla
5 071 387 79 4.90 1988 – 2020 33 NAO Rozhen, Smolyan
6 691 348923 115351 3.02 1990 – 2022 33 Steward Observatory, Kitt Peak-Spacewatch
7 095 364 116 3.14 1991 – 2022 32 Crimea-Nauchnij
8 511 96 18 5.33 1991 – 2022 32 Haute Provence
9 413 207 80 2.59 1977 – 2007 31 Siding Spring Observatory
10 381 141 16 8.81 1993 – 2022 30 Tokyo-Kiso
11 033 638 208 3.07 1993 – 2022 30 Karl Schwarzschild Observatory, Tautenburg
12 568 80765 20215 4.00 1993 – 2022 30 Maunakea
13 304 154 41 3.76 1994 – 2022 29 Las Campanas Observatory
14 303 32 12 2.67 1994 – 2022 29 OAN de Llano del Hato, Merida
15 595 21 8 2.63 1994 – 2022 29 Farra d'Isonzo
Sum 739 9113888 2476534 3.68 1950 – 2022 73 739 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 50400041 618614 81.47 2004 – 2022 19 Mt. Lemmon Survey
2 F51 45679457 619376 73.75 2008 – 2022 15 Pan-STARRS 1, Haleakala
3 703 33922429 457690 74.12 1998 – 2022 25 Catalina Sky Survey
4 704 32691560 362667 90.14 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
5 T08 23628756 280360 84.28 2014 – 2022 9 ATLAS-MLO, Mauna Loa
6 T05 21828794 271927 80.27 2015 – 2022 8 ATLAS-HKO, Haleakala
7 G45 16833570 372732 45.16 2011 – 2017 7 Space Surveillance Telescope, Atom Site
8 F52 15073591 589504 25.57 2014 – 2022 9 Pan-STARRS 2, Haleakala
9 I41 14077579 370364 38.01 2002 – 2022 21 Palomar Mountain--ZTF
10 691 12705445 574629 22.11 1984 – 2022 39 Steward Observatory, Kitt Peak-Spacewatch
11 D29 11066207 481818 22.97 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
12 699 5360366 260462 20.58 1998 – 2008 11 Lowell Observatory-LONEOS
13 644 3892484 301282 12.92 1990 – 2010 21 Palomar Mountain/NEAT
14 C51 3455156 164076 21.06 2010 – 2022 13 WISE
15 W68 2952990 89220 33.10 2022 – 2022 1 ATLAS Chile, Rio Hurtado
Sum 2206 320326377 619999 516.66 1801 – 2022 222 2206 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 45679457 619376 73.75 2008 – 2022 15 Pan-STARRS 1, Haleakala
2 G96 50400041 618614 81.47 2004 – 2022 19 Mt. Lemmon Survey
3 F52 15073591 589504 25.57 2014 – 2022 9 Pan-STARRS 2, Haleakala
4 691 12705445 574629 22.11 1984 – 2022 39 Steward Observatory, Kitt Peak-Spacewatch
5 D29 11066207 481818 22.97 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
6 703 33922429 457690 74.12 1998 – 2022 25 Catalina Sky Survey
7 G45 16833570 372732 45.16 2011 – 2017 7 Space Surveillance Telescope, Atom Site
8 I41 14077579 370364 38.01 2002 – 2022 21 Palomar Mountain--ZTF
9 704 32691560 362667 90.14 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
10 644 3892484 301282 12.92 1990 – 2010 21 Palomar Mountain/NEAT
11 T08 23628756 280360 84.28 2014 – 2022 9 ATLAS-MLO, Mauna Loa
12 T05 21828794 271927 80.27 2015 – 2022 8 ATLAS-HKO, Haleakala
13 699 5360366 260462 20.58 1998 – 2008 11 Lowell Observatory-LONEOS
14 J43 2207324 227167 9.72 2007 – 2022 16 Oukaimeden Observatory, Marrakech
15 E12 2230234 169743 13.14 2003 – 2013 11 Siding Spring Survey
Sum 2206 320326377 619999 516.66 1801 – 2022 222 2206 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
2 768 1966 2 983.00 1930 – 1934 5 Dearborn Observatory, Evanston (aft. Oct. 1939)
3 217 769 3 256.33 2021 – 2021 1 Assah
4 O44 453 2 226.50 2012 – 2013 2 Lijiang Station, Yunnan Observatories
5 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
6 C57 747648 4316 173.23 2018 – 2019 2 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 C40 21700 134 161.94 2010 – 2022 13 Kuban State University Astrophysical Observatory
10 708 138 1 138.00 1900 – 1908 9 Chamberlin Observatory, Denver
11 Y28 2996 23 130.26 2011 – 2018 8 OASI, Nova Itacuruba
12 C55 355 3 118.33 2016 – 2016 1 Kepler
13 248 5641 48 117.52 1989 – 1993 5 Hipparcos
14 778 1981 17 116.53 1935 – 1990 56 Allegheny Observatory, Pittsburgh
15 780 115 1 115.00 1931 – 1931 1 Leander McCormick Observatory, Charlottesville
Sum 2206 320326377 619999 516.66 1801 – 2022 222 2206 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
14 503 134 16 8.38 1830 – 1989 160 Cambridge
15 961 4 1 4.00 1830 – 1830 1 City Observatory, Calton Hill, Edinburgh
Sum 2206 320326377 619999 516.66 1801 – 2022 222 2206 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 23764 1086 21.88 1846 – 2013 168 Pulkovo
5 503 134 16 8.38 1830 – 1989 160 Cambridge
6 027 127 33 3.85 1804 – 1942 139 Milan
7 784 373 63 5.92 1866 – 2002 137 Stull Observatory, Alfred University
8 035 2917 90 32.41 1835 – 1970 136 Copenhagen
9 822 1656 228 7.26 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 2206 320326377 619999 516.66 1801 – 2022 222 2206 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 63328407 2363330 26.80 2008 – 2022 15 Pan-STARRS 1, Haleakala
2 G96 62467546 1645627 37.96 2004 – 2022 19 Mt. Lemmon Survey
3 703 34673791 574383 60.37 1998 – 2022 25 Catalina Sky Survey
4 704 32851232 376864 87.17 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
5 T08 23794770 295287 80.58 2014 – 2022 9 ATLAS-MLO, Mauna Loa
6 T05 21966665 284414 77.23 2015 – 2022 8 ATLAS-HKO, Haleakala
7 F52 19814992 1187896 16.68 2014 – 2022 9 Pan-STARRS 2, Haleakala
8 G45 17169505 397833 43.16 2011 – 2017 7 Space Surveillance Telescope, Atom Site
9 I41 14642836 420286 34.84 2002 – 2022 21 Palomar Mountain--ZTF
10 691 14542151 949310 15.32 1984 – 2022 39 Steward Observatory, Kitt Peak-Spacewatch
11 D29 11496657 568513 20.22 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
12 699 5483125 293963 18.65 1998 – 2009 12 Lowell Observatory-LONEOS
13 W84 5345071 540044 9.90 2002 – 2022 21 Cerro Tololo-DECam
14 644 4119633 357243 11.53 1990 – 2010 21 Palomar Mountain/NEAT
15 C51 3803995 196046 19.40 2010 – 2022 13 WISE
Sum 2344 367698704 3883481 94.68 1661 – 2022 362 2344 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 63328407 2363330 26.80 2008 – 2022 15 Pan-STARRS 1, Haleakala
2 G96 62467546 1645627 37.96 2004 – 2022 19 Mt. Lemmon Survey
3 F52 19814992 1187896 16.68 2014 – 2022 9 Pan-STARRS 2, Haleakala
4 691 14542151 949310 15.32 1984 – 2022 39 Steward Observatory, Kitt Peak-Spacewatch
5 703 34673791 574383 60.37 1998 – 2022 25 Catalina Sky Survey
6 D29 11496657 568513 20.22 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
7 W84 5345071 540044 9.90 2002 – 2022 21 Cerro Tololo-DECam
8 I41 14642836 420286 34.84 2002 – 2022 21 Palomar Mountain--ZTF
9 G45 17169505 397833 43.16 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 704 32851232 376864 87.17 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
11 644 4119633 357243 11.53 1990 – 2010 21 Palomar Mountain/NEAT
12 T08 23794770 295287 80.58 2014 – 2022 9 ATLAS-MLO, Mauna Loa
13 699 5483125 293963 18.65 1998 – 2009 12 Lowell Observatory-LONEOS
14 T05 21966665 284414 77.23 2015 – 2022 8 ATLAS-HKO, Haleakala
15 J43 2304606 245180 9.40 2007 – 2022 16 Oukaimeden Observatory, Marrakech
Sum 2344 367698704 3883481 94.68 1661 – 2022 362 2344 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  
1 768 1966 2 983.00 1930 – 1934 5 Dearborn Observatory, Evanston (aft. Oct. 1939)
2 874 4857 12 404.75 1983 – 2013 31 Observatorio do Pico dos Dias, Itajuba
3 217 797 4 199.25 1984 – 2021 38 Assah
4 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
5 C40 38261 208 183.95 2010 – 2022 13 Kuban State University Astrophysical Observatory
6 C57 756882 4330 174.80 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
9 708 489 4 122.25 1900 – 1911 12 Chamberlin Observatory, Denver
10 248 5641 48 117.52 1989 – 1993 5 Hipparcos
11 G39 5044 45 112.09 2012 – 2021 10 ROAD, San Pedro de Atacama
12 778 1995 18 110.83 1910 – 1990 81 Allegheny Observatory, Pittsburgh
13 O44 471 5 94.20 2012 – 2017 6 Lijiang Station, Yunnan Observatories
14 A46 9181 98 93.68 2002 – 2006 5 Lelekovice
15 C55 371 4 92.75 2015 – 2016 2 Kepler
Sum 2344 367698704 3883481 94.68 1661 – 2022 362 2344 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 3116 99 31.47 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
15 282 8 2 4.00 1827 – 1858 32 Nimes
Sum 2344 367698704 3883481 94.68 1661 – 2022 362 2344 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 3116 99 31.47 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 27104 1230 22.04 1846 – 2013 168 Pulkovo
6 503 356 56 6.36 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
11 784 511 85 6.01 1866 – 2012 147 Stull Observatory, Alfred University
12 062 8796 1853 4.75 1830 – 1973 144 Turku
13 797 363 27 13.44 1879 – 2022 144 Yale Observatory, New Haven
14 524 49 7 7.00 1827 – 1969 143 Mannheim
15 089 23657 807 29.31 1882 – 2022 141 Nikolaev
Sum 2344 367698704 3883481 94.68 1661 – 2022 362 2344 names