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 3785 142 26.65 1984 – 2021 38 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
6 691 632 15 42.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
7 T05 591 9 65.67 2016 – 2021 6 ATLAS-HKO, Haleakala
8 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
9 E07 557 17 32.76 2011 – 2015 5 Murrumbateman
10 T08 524 10 52.40 2017 – 2021 5 ATLAS-MLO, Mauna Loa
11 F51 509 22 23.14 2011 – 2021 11 Pan-STARRS 1, Haleakala
12 673 447 9 49.67 1968 – 2017 50 Table Mountain Observatory, Wrightwood
13 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
14 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
15 G45 426 7 60.86 2014 – 2016 3 Space Surveillance Telescope, Atom Site
Sum 146 21582 147 146.82 1894 – 2021 128 146 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 3785 142 26.65 1984 – 2021 38 Mauna Kea
2 807 376 68 5.53 1998 – 2018 21 Cerro Tololo Observatory, La Serena
3 304 337 48 7.02 2002 – 2018 17 Las Campanas Observatory
4 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
5 695 154 28 5.50 1969 – 2013 45 Kitt Peak
6 W84 424 27 15.70 2013 – 2021 9 Cerro Tololo-DECam
7 809 178 22 8.09 1981 – 2013 33 European Southern Observatory, La Silla
8 F51 509 22 23.14 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 557 17 32.76 2011 – 2015 5 Murrumbateman
12 G96 307 17 18.06 2005 – 2021 17 Mt. Lemmon Survey
13 691 632 15 42.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
14 415 2020 15 134.67 2004 – 2010 7 Kambah
15 D29 316 12 26.33 2007 – 2021 15 Purple Mountain Observatory, XuYi Station
Sum 146 21582 147 146.82 1894 – 2021 128 146 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 T05 591 9 65.67 2016 – 2021 6 ATLAS-HKO, Haleakala
10 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
11 G45 426 7 60.86 2014 – 2016 3 Space Surveillance Telescope, Atom Site
12 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
13 T08 524 10 52.40 2017 – 2021 5 ATLAS-MLO, Mauna Loa
14 673 447 9 49.67 1968 – 2017 50 Table Mountain Observatory, Wrightwood
15 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
Sum 146 21582 147 146.82 1894 – 2021 128 146 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 146 21582 147 146.82 1894 – 2021 128 146 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
9 568 3785 142 26.65 1984 – 2021 38 Mauna Kea
10 672 199 8 24.88 1916 – 1951 36 Mount Wilson
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
13 691 632 15 42.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
14 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
15 309 128 18 7.11 2000 – 2021 22 Cerro Paranal
Sum 146 21582 147 146.82 1894 – 2021 128 146 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 36894 1988 18.56 1996 – 2020 25 SOHO
2 585 33487 558 60.01 1986 – 2022 37 Kyiv comet station
3 T08 29199 389 75.06 2017 – 2022 6 ATLAS-MLO, Mauna Loa
4 349 27131 885 30.66 1999 – 2022 24 Ageo
5 T05 26780 445 60.18 2015 – 2022 8 ATLAS-HKO, Haleakala
6 704 25764 634 40.64 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
7 703 23498 823 28.55 1998 – 2022 25 Catalina Sky Survey
8 C23 22986 450 51.08 2010 – 2022 13 Olmen
9 H45 22088 397 55.64 2005 – 2022 18 Arkansas Sky Obs., Petit Jean Mountain South
10 A77 21296 720 29.58 2005 – 2022 18 Observatoire Chante-Perdrix, Dauban
11 958 20369 329 61.91 1997 – 2022 26 Observatoire de Dax
12 213 19240 672 28.63 2001 – 2022 22 Observatorio Montcabre
13 G96 18986 890 21.33 2004 – 2022 19 Mt. Lemmon Survey
14 B96 17724 418 42.40 2009 – 2022 14 Brixiis Observatory, Kruibeke
15 F51 17723 857 20.68 2009 – 2021 13 Pan-STARRS 1, Haleakala
Sum 1525 1231555 3980 309.44 1661 – 2022 362 1525 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 11254 1144 9.84 2001 – 2022 22 Buchloe
3 H06 12128 922 13.15 2004 – 2022 19 iTelescope Observatory, Mayhill
4 G96 18986 890 21.33 2004 – 2022 19 Mt. Lemmon Survey
5 349 27131 885 30.66 1999 – 2022 24 Ageo
6 372 8694 864 10.06 1973 – 2021 49 Geisei
7 F51 17723 857 20.68 2009 – 2021 13 Pan-STARRS 1, Haleakala
8 204 7490 842 8.90 2001 – 2022 22 Schiaparelli Observatory
9 703 23498 823 28.55 1998 – 2022 25 Catalina Sky Survey
10 A77 21296 720 29.58 2005 – 2022 18 Observatoire Chante-Perdrix, Dauban
11 213 19240 672 28.63 2001 – 2022 22 Observatorio Montcabre
12 Q62 8138 664 12.26 2012 – 2022 11 iTelescope Observatory, Siding Spring
13 A71 9219 664 13.88 2005 – 2022 18 Stixendorf
14 704 25764 634 40.64 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
15 130 2728 632 4.32 1997 – 2022 26 Lumezzane
Sum 1525 1231555 3980 309.44 1661 – 2022 362 1525 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 C40 3774 31 121.74 2012 – 2022 11 Kuban State University Astrophysical 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 I80 97 1 97.00 2019 – 2019 1 Rose Cottage Observatory, Keighley
12 190 2713 29 93.55 1969 – 2022 54 Gissar
13 813 79 1 79.00 1909 – 1910 2 Santiago-Quinta Normal (1862-1920)
14 134 2884 37 77.95 2013 – 2021 9 Groszschwabhausen
15 T08 29199 389 75.06 2017 – 2022 6 ATLAS-MLO, Mauna Loa
Sum 1525 1231555 3980 309.44 1661 – 2022 362 1525 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 1525 1231555 3980 309.44 1661 – 2022 362 1525 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 1888 58 32.55 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 1525 1231555 3980 309.44 1661 – 2022 362 1525 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 13046826 612353 21.31 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 9842740 558274 17.63 2004 – 2022 19 Mt. Lemmon Survey
3 F52 3023106 328707 9.20 2014 – 2022 9 Pan-STARRS 2, Haleakala
4 691 1482097 256709 5.77 1985 – 2022 38 Steward Observatory, Kitt Peak-Spacewatch
5 W84 1432360 88831 16.12 2012 – 2022 11 Cerro Tololo-DECam
6 703 554494 65872 8.42 1998 – 2022 25 Catalina Sky Survey
7 I41 549532 47273 11.62 2002 – 2022 21 Palomar Mountain--ZTF
8 C51 341026 31560 10.81 2010 – 2022 13 WISE
9 G45 329018 24489 13.44 2012 – 2017 6 Space Surveillance Telescope, Atom Site
10 D29 304532 66372 4.59 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
11 291 199322 46613 4.28 2001 – 2022 22 LPL/Spacewatch II
12 V00 197444 45166 4.37 2019 – 2022 4 Kitt Peak-Bok
13 568 160055 23713 6.75 1989 – 2022 34 Mauna Kea
14 I52 154559 17078 9.05 2012 – 2022 11 Steward Observatory, Mt. Lemmon Station
15 H21 140039 18370 7.62 2009 – 2022 14 Astronomical Research Observatory, Westfield
Sum 1146 33985548 743351 45.72 1873 – 2022 150 1146 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 13046826 612353 21.31 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 9842740 558274 17.63 2004 – 2022 19 Mt. Lemmon Survey
3 F52 3023106 328707 9.20 2014 – 2022 9 Pan-STARRS 2, Haleakala
4 691 1482097 256709 5.77 1985 – 2022 38 Steward Observatory, Kitt Peak-Spacewatch
5 W84 1432360 88831 16.12 2012 – 2022 11 Cerro Tololo-DECam
6 D29 304532 66372 4.59 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
7 703 554494 65872 8.42 1998 – 2022 25 Catalina Sky Survey
8 I41 549532 47273 11.62 2002 – 2022 21 Palomar Mountain--ZTF
9 291 199322 46613 4.28 2001 – 2022 22 LPL/Spacewatch II
10 V00 197444 45166 4.37 2019 – 2022 4 Kitt Peak-Bok
11 C51 341026 31560 10.81 2010 – 2022 13 WISE
12 645 77632 27185 2.86 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
13 807 119312 25211 4.73 1988 – 2022 35 Cerro Tololo Observatory, La Serena
14 G45 329018 24489 13.44 2012 – 2017 6 Space Surveillance Telescope, Atom Site
15 568 160055 23713 6.75 1989 – 2022 34 Mauna Kea
Sum 1146 33985548 743351 45.72 1873 – 2022 150 1146 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 Z73 349 3 116.33 2015 – 2017 3 Observatorio Nuevos Horizontes, Camas
3 A84 1290 12 107.50 2002 – 2013 12 TUBITAK National Observatory
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 H78 463 6 77.17 2010 – 2017 8 University of Narino Observatory, Pasto
7 C40 663 9 73.67 2012 – 2021 10 Kuban State University Astrophysical Observatory
8 B30 236 4 59.00 2007 – 2007 1 Szamotuly-Galowo
9 O48 48 1 48.00 2021 – 2021 1 Purple Mountain Observatory, Yaoan (0.8-m)
10 W08 46 1 46.00 2017 – 2017 1 Jimginny Observatory, Naperville
11 851 213 5 42.60 2021 – 2022 2 Burke-Gaffney Observatory, Halifax
12 B92 41 1 41.00 2017 – 2017 1 Chinon
13 H25 41 1 41.00 2009 – 2009 1 Harvest Moon Observatory, Northfield
14 I23 80 2 40.00 2010 – 2010 1 Frosty Cold Observatory, Mash Harbor
15 K99 116 3 38.67 2019 – 2021 3 Derenivka Observatory
Sum 1146 33985548 743351 45.72 1873 – 2022 150 1146 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 1146 33985548 743351 45.72 1873 – 2022 150 1146 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 1392 530 2.63 1924 – 2014 91 Uccle
9 119 112 56 2.00 1938 – 2021 84 Abastuman
10 186 245 32 7.66 1942 – 2021 80 Kitab
11 073 517 65 7.95 1943 – 2022 80 Bucharest
12 672 4 3 1.33 1926 – 2003 78 Mount Wilson
13 711 9084 2242 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 1146 33985548 743351 45.72 1873 – 2022 150 1146 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 3829531 1127148 3.40 2009 – 2021 13 Pan-STARRS 1, Haleakala
2 G96 1801679 465696 3.87 2004 – 2022 19 Mt. Lemmon Survey
3 W84 1749714 316222 5.53 2002 – 2022 21 Cerro Tololo-DECam
4 F52 429566 129310 3.32 2014 – 2022 9 Pan-STARRS 2, Haleakala
5 691 367533 121553 3.02 1990 – 2022 33 Steward Observatory, Kitt Peak-Spacewatch
6 703 159585 49578 3.22 1998 – 2022 25 Catalina Sky Survey
7 644 103892 34693 2.99 2001 – 2010 10 Palomar Mountain/NEAT
8 V00 101689 26301 3.87 2019 – 2022 4 Kitt Peak-Bok
9 699 89732 27249 3.29 1998 – 2008 11 Lowell Observatory-LONEOS
10 568 82336 20953 3.93 1993 – 2022 30 Mauna Kea
11 695 78385 36520 2.15 1995 – 2021 27 Kitt Peak
12 807 73850 35931 2.06 1997 – 2022 26 Cerro Tololo Observatory, La Serena
13 309 55853 6531 8.55 2000 – 2022 23 Cerro Paranal
14 645 35160 17235 2.04 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
15 291 29258 9764 3.00 2001 – 2022 22 LPL/Spacewatch II
Sum 725 9252552 2500198 3.70 1950 – 2022 73 725 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 3829531 1127148 3.40 2009 – 2021 13 Pan-STARRS 1, Haleakala
2 G96 1801679 465696 3.87 2004 – 2022 19 Mt. Lemmon Survey
3 W84 1749714 316222 5.53 2002 – 2022 21 Cerro Tololo-DECam
4 F52 429566 129310 3.32 2014 – 2022 9 Pan-STARRS 2, Haleakala
5 691 367533 121553 3.02 1990 – 2022 33 Steward Observatory, Kitt Peak-Spacewatch
6 703 159585 49578 3.22 1998 – 2022 25 Catalina Sky Survey
7 695 78385 36520 2.15 1995 – 2021 27 Kitt Peak
8 807 73850 35931 2.06 1997 – 2022 26 Cerro Tololo Observatory, La Serena
9 644 103892 34693 2.99 2001 – 2010 10 Palomar Mountain/NEAT
10 699 89732 27249 3.29 1998 – 2008 11 Lowell Observatory-LONEOS
11 V00 101689 26301 3.87 2019 – 2022 4 Kitt Peak-Bok
12 568 82336 20953 3.93 1993 – 2022 30 Mauna Kea
13 645 35160 17235 2.04 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
14 291 29258 9764 3.00 2001 – 2022 22 LPL/Spacewatch II
15 309 55853 6531 8.55 2000 – 2022 23 Cerro Paranal
Sum 725 9252552 2500198 3.70 1950 – 2022 73 725 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
4 270 113 4 28.25 2022 – 2022 1 Unistellar Network, Roving Observer
5 258 1588 74 21.46 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
9 169 16 1 16.00 2012 – 2012 1 Airali Observatory
10 115 16 1 16.00 1998 – 1998 1 Zelenchukskaya
11 W79 30 2 15.00 2021 – 2021 1 Cerro Tololo-LCO Aqawan B #1
12 J13 1266 94 13.47 2011 – 2018 8 La Palma-Liverpool Telescope
13 740 66 5 13.20 2004 – 2004 1 SFA Observatory, Nacogdoches
14 J70 13 1 13.00 2007 – 2008 2 Obs. Astronomico Vega del Thader, El Palmar
15 T03 13 1 13.00 2021 – 2021 1 Haleakala-LCO Clamshell #3
Sum 725 9252552 2500198 3.70 1950 – 2022 73 725 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
4 413 210 81 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
7 071 389 80 4.86 1988 – 2020 33 NAO Rozhen, Smolyan
8 809 4301 1086 3.96 1988 – 2013 26 European Southern Observatory, La Silla
9 691 367533 121553 3.02 1990 – 2022 33 Steward Observatory, Kitt Peak-Spacewatch
10 095 322 97 3.32 1991 – 2022 32 Crimea-Nauchnij
11 511 74 16 4.63 1991 – 2022 32 Haute Provence
12 808 461 227 2.03 1992 – 2000 9 El Leoncito
13 402 44 16 2.75 1992 – 1999 8 Dynic Astronomical Observatory
14 372 88 44 2.00 1992 – 2004 13 Geisei
15 376 16 8 2.00 1992 – 1998 7 Uenohara
Sum 725 9252552 2500198 3.70 1950 – 2022 73 725 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
4 071 389 80 4.86 1988 – 2020 33 NAO Rozhen, Smolyan
5 691 367533 121553 3.02 1990 – 2022 33 Steward Observatory, Kitt Peak-Spacewatch
6 095 322 97 3.32 1991 – 2022 32 Crimea-Nauchnij
7 511 74 16 4.63 1991 – 2022 32 Haute Provence
8 413 210 81 2.59 1977 – 2007 31 Siding Spring Observatory
9 568 82336 20953 3.93 1993 – 2022 30 Mauna Kea
10 381 117 15 7.80 1993 – 2022 30 Tokyo-Kiso
11 033 314 99 3.17 1993 – 2022 30 Karl Schwarzschild Observatory, Tautenburg
12 595 21 8 2.63 1994 – 2022 29 Farra d'Isonzo
13 950 12540 2580 4.86 1994 – 2021 28 La Palma
14 010 198 67 2.96 1992 – 2019 28 Caussols
15 304 94 22 4.27 1994 – 2021 28 Las Campanas Observatory
Sum 725 9252552 2500198 3.70 1950 – 2022 73 725 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 48840353 615265 79.38 2004 – 2022 19 Mt. Lemmon Survey
2 F51 44164710 616041 71.69 2008 – 2021 14 Pan-STARRS 1, Haleakala
3 703 33170652 455671 72.80 1998 – 2022 25 Catalina Sky Survey
4 704 32687618 362263 90.23 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
5 T08 21629900 272286 79.44 2014 – 2022 9 ATLAS-MLO, Mauna Loa
6 T05 20270928 266120 76.17 2015 – 2022 8 ATLAS-HKO, Haleakala
7 G45 16830774 372545 45.18 2011 – 2017 7 Space Surveillance Telescope, Atom Site
8 I41 13794634 366834 37.60 2002 – 2022 21 Palomar Mountain--ZTF
9 691 12683078 571936 22.18 1984 – 2022 39 Steward Observatory, Kitt Peak-Spacewatch
10 F52 12338380 561062 21.99 2014 – 2022 9 Pan-STARRS 2, Haleakala
11 D29 10052768 468512 21.46 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
12 699 5359403 260274 20.59 1998 – 2008 11 Lowell Observatory-LONEOS
13 644 3887350 300603 12.93 1990 – 2010 21 Palomar Mountain/NEAT
14 C51 3380563 163707 20.65 2010 – 2022 13 WISE
15 E12 2229638 169621 13.14 2003 – 2013 11 Siding Spring Survey
Sum 2183 304080432 616690 493.08 1801 – 2022 222 2183 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 44164710 616041 71.69 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 48840353 615265 79.38 2004 – 2022 19 Mt. Lemmon Survey
3 691 12683078 571936 22.18 1984 – 2022 39 Steward Observatory, Kitt Peak-Spacewatch
4 F52 12338380 561062 21.99 2014 – 2022 9 Pan-STARRS 2, Haleakala
5 D29 10052768 468512 21.46 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
6 703 33170652 455671 72.80 1998 – 2022 25 Catalina Sky Survey
7 G45 16830774 372545 45.18 2011 – 2017 7 Space Surveillance Telescope, Atom Site
8 I41 13794634 366834 37.60 2002 – 2022 21 Palomar Mountain--ZTF
9 704 32687618 362263 90.23 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
10 644 3887350 300603 12.93 1990 – 2010 21 Palomar Mountain/NEAT
11 T08 21629900 272286 79.44 2014 – 2022 9 ATLAS-MLO, Mauna Loa
12 T05 20270928 266120 76.17 2015 – 2022 8 ATLAS-HKO, Haleakala
13 699 5359403 260274 20.59 1998 – 2008 11 Lowell Observatory-LONEOS
14 J43 2206149 226972 9.72 2007 – 2022 16 Oukaimeden Observatory, Marrakech
15 E12 2229638 169621 13.14 2003 – 2013 11 Siding Spring Survey
Sum 2183 304080432 616690 493.08 1801 – 2022 222 2183 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 C40 18351 85 215.89 2010 – 2022 13 Kuban State University Astrophysical Observatory
6 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
7 C57 767716 4481 171.33 2018 – 2021 4 TESS
8 W78 331 2 165.50 2017 – 2018 2 Clay Telescope, Harvard University
9 L98 5201 32 162.53 2017 – 2018 2 La Sagra Observatory, Puebla de Don Fadrique
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 2183 304080432 616690 493.08 1801 – 2022 222 2183 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 2183 304080432 616690 493.08 1801 – 2022 222 2183 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 2183 304080432 616690 493.08 1801 – 2022 222 2183 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 61059312 2356434 25.91 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 60504073 1640150 36.89 2004 – 2022 19 Mt. Lemmon Survey
3 703 33908418 571952 59.29 1998 – 2022 25 Catalina Sky Survey
4 704 32851236 376870 87.17 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
5 T08 21778370 286460 76.03 2014 – 2022 9 ATLAS-MLO, Mauna Loa
6 T05 20396876 278038 73.36 2015 – 2022 8 ATLAS-HKO, Haleakala
7 G45 17168230 397867 43.15 2011 – 2017 7 Space Surveillance Telescope, Atom Site
8 F52 15795913 1019466 15.49 2014 – 2022 9 Pan-STARRS 2, Haleakala
9 691 14541277 950795 15.29 1984 – 2022 39 Steward Observatory, Kitt Peak-Spacewatch
10 I41 14358771 416656 34.46 2002 – 2022 21 Palomar Mountain--ZTF
11 D29 10377962 540976 19.18 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
12 699 5483103 293965 18.65 1998 – 2009 12 Lowell Observatory-LONEOS
13 W84 5153304 529214 9.74 2002 – 2022 21 Cerro Tololo-DECam
14 644 4119666 357269 11.53 1990 – 2010 21 Palomar Mountain/NEAT
15 C51 3727902 195640 19.05 2010 – 2022 13 WISE
Sum 2320 348571686 3864431 90.20 1661 – 2022 362 2320 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 61059312 2356434 25.91 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 60504073 1640150 36.89 2004 – 2022 19 Mt. Lemmon Survey
3 F52 15795913 1019466 15.49 2014 – 2022 9 Pan-STARRS 2, Haleakala
4 691 14541277 950795 15.29 1984 – 2022 39 Steward Observatory, Kitt Peak-Spacewatch
5 703 33908418 571952 59.29 1998 – 2022 25 Catalina Sky Survey
6 D29 10377962 540976 19.18 2006 – 2022 17 Purple Mountain Observatory, XuYi Station
7 W84 5153304 529214 9.74 2002 – 2022 21 Cerro Tololo-DECam
8 I41 14358771 416656 34.46 2002 – 2022 21 Palomar Mountain--ZTF
9 G45 17168230 397867 43.15 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 704 32851236 376870 87.17 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
11 644 4119666 357269 11.53 1990 – 2010 21 Palomar Mountain/NEAT
12 699 5483103 293965 18.65 1998 – 2009 12 Lowell Observatory-LONEOS
13 T08 21778370 286460 76.03 2014 – 2022 9 ATLAS-MLO, Mauna Loa
14 T05 20396876 278038 73.36 2015 – 2022 8 ATLAS-HKO, Haleakala
15 J43 2302119 244434 9.42 2007 – 2022 16 Oukaimeden Observatory, Marrakech
Sum 2320 348571686 3864431 90.20 1661 – 2022 362 2320 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 22795 127 179.49 2010 – 2022 13 Kuban State University Astrophysical Observatory
6 C57 773528 4559 169.67 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 2320 348571686 3864431 90.20 1661 – 2022 362 2320 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 2320 348571686 3864431 90.20 1661 – 2022 362 2320 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
13 524 49 7 7.00 1827 – 1969 143 Mannheim
14 089 23482 800 29.35 1882 – 2022 141 Nikolaev
15 027 166 39 4.26 1804 – 1942 139 Milan
Sum 2320 348571686 3864431 90.20 1661 – 2022 362 2320 names