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 5245 213 24.62 1984 – 2021 38 Maunakea
2 415 2035 15 135.67 2004 – 2010 7 Kambah
3 T08 1975 11 179.55 2017 – 2022 6 ATLAS-MLO, Mauna Loa
4 T05 1798 10 179.80 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 W84 601 33 18.21 2013 – 2022 10 Cerro Tololo-DECam
10 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
11 F51 578 22 26.27 2011 – 2022 12 Pan-STARRS 1, Haleakala
12 E07 558 17 32.82 2011 – 2015 5 Murrumbateman
13 304 535 65 8.23 2002 – 2022 21 Las Campanas Observatory
14 T14 528 86 6.14 2010 – 2021 12 Canada-France-Hawaii Telescope, Maunakea
15 D29 500 12 41.67 2007 – 2022 16 Purple Mountain Observatory, XuYi Station
Sum 158 28073 226 124.22 1894 – 2023 130 158 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 5245 213 24.62 1984 – 2021 38 Maunakea
2 T14 528 86 6.14 2010 – 2021 12 Canada-France-Hawaii Telescope, Maunakea
3 807 467 82 5.70 1998 – 2022 25 Cerro Tololo Observatory, La Serena
4 304 535 65 8.23 2002 – 2022 21 Las Campanas Observatory
5 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
6 W84 601 33 18.21 2013 – 2022 10 Cerro Tololo-DECam
7 695 157 29 5.41 1969 – 2014 46 Kitt Peak
8 809 180 22 8.18 1981 – 2013 33 European Southern Observatory, La Silla
9 F51 578 22 26.27 2011 – 2022 12 Pan-STARRS 1, Haleakala
10 309 132 19 6.95 2000 – 2021 22 Cerro Paranal
11 950 78 19 4.11 1997 – 2011 15 La Palma
12 E07 558 17 32.82 2011 – 2015 5 Murrumbateman
13 G96 374 17 22.00 2005 – 2022 18 Mt. Lemmon Survey
14 415 2035 15 135.67 2004 – 2010 7 Kambah
15 691 662 15 44.13 1992 – 2021 30 Steward Observatory, Kitt Peak-Spacewatch
Sum 158 28073 226 124.22 1894 – 2023 130 158 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 1798 10 179.80 2016 – 2022 7 ATLAS-HKO, Haleakala
5 T08 1975 11 179.55 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 158 28073 226 124.22 1894 – 2023 130 158 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-Simeiz
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 158 28073 226 124.22 1894 – 2023 130 158 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 5245 213 24.62 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
15 807 467 82 5.70 1998 – 2022 25 Cerro Tololo Observatory, La Serena
Sum 158 28073 226 124.22 1894 – 2023 130 158 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 J75 793 13 61.00 2007 – 2013 7 OAM Observatory, La Sagra
14 168 61 1 61.00 2014 – 2014 1 Kourovskaya
15 958 182 3 60.67 2013 – 2014 2 Observatoire de Dax
Sum 195 34172 199 171.72 2000 – 2018 19 195 names

ARTSAT - Observations of artifical satellites

Sorted by first year of observation

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

ARTSAT - Observations of artifical satellites

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
Year range of observations of top 15 stations at Minor Planet Center for ARTSAT class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 691 74 8 9.25 2001 – 2018 18 Steward Observatory, Kitt Peak-Spacewatch
2 595 41 7 5.86 2001 – 2018 18 Farra d'Isonzo
3 926 41 7 5.86 2001 – 2017 17 Tenagra II Observatory, Nogales
4 J95 1485 45 33.00 2002 – 2018 17 Great Shefford
5 300 88 9 9.78 2000 – 2015 16 Bisei Spaceguard Center-BATTeRS
6 703 2194 60 36.57 2003 – 2018 16 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 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 36997 1990 18.59 1996 – 2023 28 SOHO
2 585 34039 576 59.10 1986 – 2023 38 Kyiv comet station
3 T05 33430 507 65.94 2015 – 2023 9 ATLAS-HKO, Haleakala
4 T08 33203 434 76.50 2017 – 2022 6 ATLAS-MLO, Mauna Loa
5 349 28672 959 29.90 1999 – 2023 25 Ageo
6 C23 26613 511 52.08 2010 – 2023 14 Olmen
7 703 26592 883 30.12 1998 – 2023 26 Catalina Sky Survey
8 704 25844 667 38.75 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
9 A77 24684 821 30.07 2005 – 2023 19 Observatoire Chante-Perdrix, Dauban
10 H45 22203 401 55.37 2005 – 2023 19 Arkansas Sky Obs., Petit Jean Mountain South
11 G96 21451 989 21.69 2004 – 2023 20 Mt. Lemmon Survey
12 958 20410 340 60.03 1997 – 2023 27 Observatoire de Dax
13 F51 19850 970 20.46 2009 – 2023 15 Pan-STARRS 1, Haleakala
14 213 19722 709 27.82 2001 – 2023 23 Observatorio Montcabre
15 I81 18732 403 46.48 2011 – 2023 13 Tarbatness Observatory, Portmahomack
Sum 1591 1345248 4581 293.66 1661 – 2023 363 1591 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 36997 1990 18.59 1996 – 2023 28 SOHO
2 215 12341 1231 10.03 2001 – 2023 23 Buchloe
3 G96 21451 989 21.69 2004 – 2023 20 Mt. Lemmon Survey
4 F51 19850 970 20.46 2009 – 2023 15 Pan-STARRS 1, Haleakala
5 H06 12786 967 13.22 2004 – 2023 20 iTelescope Observatory, Mayhill
6 349 28672 959 29.90 1999 – 2023 25 Ageo
7 204 7656 885 8.65 2001 – 2023 23 Schiaparelli Observatory
8 703 26592 883 30.12 1998 – 2023 26 Catalina Sky Survey
9 372 8703 879 9.90 1973 – 2023 51 Geisei
10 A77 24684 821 30.07 2005 – 2023 19 Observatoire Chante-Perdrix, Dauban
11 Q62 10434 728 14.33 2012 – 2023 12 iTelescope Observatory, Siding Spring
12 213 19722 709 27.82 2001 – 2023 23 Observatorio Montcabre
13 704 25844 667 38.75 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
14 A71 9244 666 13.88 2005 – 2022 18 Stixendorf
15 900 9916 651 15.23 1991 – 2023 33 Moriyama
Sum 1591 1345248 4581 293.66 1661 – 2023 363 1591 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 9581 16 598.81 2018 – 2021 4 TESS
2 G39 4947 31 159.58 2014 – 2021 8 ROAD, San Pedro de Atacama
3 J92 138 1 138.00 2004 – 2004 1 Beaconsfield
4 C40 7809 61 128.02 2012 – 2023 12 Kuban State University Astrophysical Observatory
5 708 351 3 117.00 1906 – 1911 6 Chamberlin Observatory, Denver
6 I08 104 1 104.00 2011 – 2011 1 Alianza S4, Cerro Burek
7 A46 9089 89 102.12 2002 – 2006 5 Lelekovice
8 334 204 2 102.00 1973 – 1986 14 Tsingtao
9 K81 2946 29 101.59 2018 – 2023 6 P.M.P.H.R. Deep Sky Observatory, Atina
10 190 3164 32 98.88 1969 – 2023 55 Gissar
11 I80 97 1 97.00 2019 – 2019 1 Rose Cottage Observatory, Keighley
12 134 3859 42 91.88 2013 – 2023 11 Groszschwabhausen
13 L28 265 3 88.33 2018 – 2023 6 ISON-Castelgrande Observatory
14 813 79 1 79.00 1909 – 1910 2 Santiago-Quinta Normal (1862-1920)
15 T08 33203 434 76.50 2017 – 2022 6 ATLAS-MLO, Mauna Loa
Sum 1591 1345248 4581 293.66 1661 – 2023 363 1591 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
3 007 213 24 8.88 1819 – 1935 117 Paris
4 281 2 1 2.00 1819 – 1819 1 Bologna
5 027 41 7 5.86 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
9 524 32 4 8.00 1835 – 1969 135 Mannheim
10 548 76 10 7.60 1835 – 1910 76 Berlin (1835-1913)
11 058 236 20 11.80 1835 – 1936 102 Kaliningrad
12 051 465 22 21.14 1836 – 1987 152 Royal Observatory, Cape of Good Hope
13 545 40 6 6.67 1846 – 1871 26 Vienna (before 1879)
14 787 54 9 6.00 1846 – 1896 51 U.S. Naval Obs., Washington (before 1893)
15 533 217 23 9.43 1846 – 1921 76 Padua
Sum 1591 1345248 4581 293.66 1661 – 2023 363 1591 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
6 189 114 17 6.71 1880 – 2019 140 Geneva (before 1967)
7 089 1890 59 32.03 1882 – 2021 140 Mykolaiv
8 524 32 4 8.00 1835 – 1969 135 Mannheim
9 822 711 43 16.53 1885 – 2019 135 Cordoba
10 084 2245 56 40.09 1877 – 2007 131 Pulkovo
11 541 38 7 5.43 1887 – 2017 131 Prague
12 995 33 3 11.00 1870 – 1997 128 Durham
13 662 1324 124 10.68 1888 – 2007 120 Lick Observatory, Mount Hamilton
14 547 26 6 4.33 1866 – 1984 119 Breslau
15 105 162 11 14.73 1879 – 1997 119 Moscow
Sum 1591 1345248 4581 293.66 1661 – 2023 363 1591 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 15202125 698776 21.76 2008 – 2023 16 Pan-STARRS 1, Haleakala
2 G96 10955655 620559 17.65 2004 – 2023 20 Mt. Lemmon Survey
3 F52 5269256 489347 10.77 2015 – 2023 9 Pan-STARRS 2, Haleakala
4 W84 1773377 115471 15.36 2012 – 2023 12 Cerro Tololo-DECam
5 691 1381458 250762 5.51 1985 – 2023 39 Steward Observatory, Kitt Peak-Spacewatch
6 703 553693 63483 8.72 1998 – 2023 26 Catalina Sky Survey
7 I41 502064 43915 11.43 2002 – 2023 22 Palomar Mountain--ZTF
8 V00 454773 97868 4.65 2019 – 2023 5 Kitt Peak-Bok
9 D29 437483 84371 5.19 2006 – 2023 18 Purple Mountain Observatory, XuYi Station
10 C51 350525 32110 10.92 2010 – 2023 14 WISE
11 G45 289956 22011 13.17 2012 – 2017 6 Space Surveillance Telescope, Atom Site
12 291 197083 46113 4.27 2001 – 2023 23 LPL/Spacewatch II
13 I52 178321 20334 8.77 2012 – 2023 12 Steward Observatory, Mt. Lemmon Station
14 568 167649 25569 6.56 1989 – 2022 34 Maunakea
15 H21 155336 21177 7.34 2009 – 2023 15 Astronomical Research Observatory, Westfield
Sum 1233 40375018 826740 48.84 1873 – 2023 151 1233 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 15202125 698776 21.76 2008 – 2023 16 Pan-STARRS 1, Haleakala
2 G96 10955655 620559 17.65 2004 – 2023 20 Mt. Lemmon Survey
3 F52 5269256 489347 10.77 2015 – 2023 9 Pan-STARRS 2, Haleakala
4 691 1381458 250762 5.51 1985 – 2023 39 Steward Observatory, Kitt Peak-Spacewatch
5 W84 1773377 115471 15.36 2012 – 2023 12 Cerro Tololo-DECam
6 V00 454773 97868 4.65 2019 – 2023 5 Kitt Peak-Bok
7 D29 437483 84371 5.19 2006 – 2023 18 Purple Mountain Observatory, XuYi Station
8 703 553693 63483 8.72 1998 – 2023 26 Catalina Sky Survey
9 291 197083 46113 4.27 2001 – 2023 23 LPL/Spacewatch II
10 I41 502064 43915 11.43 2002 – 2023 22 Palomar Mountain--ZTF
11 C51 350525 32110 10.92 2010 – 2023 14 WISE
12 807 138673 29688 4.67 1988 – 2023 36 Cerro Tololo Observatory, La Serena
13 645 74821 26350 2.84 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
14 568 167649 25569 6.56 1989 – 2022 34 Maunakea
15 695 73312 23653 3.10 1990 – 2023 34 Kitt Peak
Sum 1233 40375018 826740 48.84 1873 – 2023 151 1233 names

UNNOBS - Observations of unnumbered minor planets

Sorted by observations per object

Click at right image for a histogram of the top 15 values.
Part of observations per object of top 15 stations at Minor Planet Center for UNNOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 L50 296 1 296.00 2019 – 2019 1 GenShtab Observatory, Nauchnyi
2 A84 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 H78 463 6 77.17 2010 – 2017 8 University of Narino Observatory, Pasto
7 C20 1673 22 76.05 2008 – 2023 16 Kislovodsk Mtn. Astronomical Stn., Pulkovo Obs.
8 C57 32868 549 59.87 2018 – 2021 4 TESS
9 B30 236 4 59.00 2007 – 2007 1 Szamotuly-Galowo
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
13 851 211 5 42.20 2021 – 2022 2 Burke-Gaffney Observatory, Halifax
14 H25 41 1 41.00 2009 – 2009 1 Harvest Moon Observatory, Northfield
15 B92 41 1 41.00 2017 – 2017 1 Chinon
Sum 1233 40375018 826740 48.84 1873 – 2023 151 1233 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 1150 89 12.92 1906 – 2023 118 Pulkovo
13 078 178 166 1.07 1911 – 1954 44 Johannesburg
14 662 66 28 2.36 1911 – 2004 94 Lick Observatory, Mount Hamilton
15 019 9 9 1.00 1912 – 1912 1 Neuchatel
Sum 1233 40375018 826740 48.84 1873 – 2023 151 1233 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
2 084 1150 89 12.92 1906 – 2023 118 Pulkovo
3 094 484 219 2.21 1912 – 2021 110 Crimea-Simeiz
4 006 207 33 6.27 1914 – 2022 109 Fabra Observatory, Barcelona
5 754 595 151 3.94 1924 – 2018 95 Yerkes Observatory, Williams Bay
6 662 66 28 2.36 1911 – 2004 94 Lick Observatory, Mount Hamilton
7 786 6 4 1.50 1903 – 1996 94 U.S. Naval Obs., Washington (since 1893)
8 012 1267 518 2.45 1924 – 2014 91 Uccle
9 119 115 57 2.02 1938 – 2022 85 Abastuman
10 186 273 33 8.27 1942 – 2023 82 Kitab
11 073 713 88 8.10 1943 – 2023 81 Bucharest
12 672 4 3 1.33 1926 – 2003 78 Mount Wilson
13 711 9009 2222 4.05 1950 – 2021 72 McDonald Observatory, Fort Davis
14 675 1619 463 3.50 1952 – 2022 71 Palomar Mountain
15 057 71 40 1.77 1937 – 2004 68 Belgrade
Sum 1233 40375018 826740 48.84 1873 – 2023 151 1233 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 3310769 979207 3.38 2009 – 2023 15 Pan-STARRS 1, Haleakala
2 W84 1510140 277398 5.44 2002 – 2023 22 Cerro Tololo-DECam
3 G96 1471266 381332 3.86 2004 – 2023 20 Mt. Lemmon Survey
4 F52 713328 214067 3.33 2014 – 2023 10 Pan-STARRS 2, Haleakala
5 691 312724 103301 3.03 1990 – 2023 34 Steward Observatory, Kitt Peak-Spacewatch
6 V00 201787 52047 3.88 2019 – 2023 5 Kitt Peak-Bok
7 703 121185 37126 3.26 1998 – 2023 26 Catalina Sky Survey
8 644 102331 34178 2.99 2001 – 2010 10 Palomar Mountain/NEAT
9 699 89486 27185 3.29 1998 – 2008 11 Lowell Observatory-LONEOS
10 695 72480 33819 2.14 1995 – 2021 27 Kitt Peak
11 807 69921 33894 2.06 1997 – 2023 27 Cerro Tololo Observatory, La Serena
12 568 56853 15377 3.70 1993 – 2022 30 Maunakea
13 309 49781 5877 8.47 2000 – 2023 24 Cerro Paranal
14 645 31077 15227 2.04 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
15 291 22741 7591 3.00 2001 – 2023 23 LPL/Spacewatch II
Sum 770 8376518 2288004 3.66 1950 – 2023 74 770 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 3310769 979207 3.38 2009 – 2023 15 Pan-STARRS 1, Haleakala
2 G96 1471266 381332 3.86 2004 – 2023 20 Mt. Lemmon Survey
3 W84 1510140 277398 5.44 2002 – 2023 22 Cerro Tololo-DECam
4 F52 713328 214067 3.33 2014 – 2023 10 Pan-STARRS 2, Haleakala
5 691 312724 103301 3.03 1990 – 2023 34 Steward Observatory, Kitt Peak-Spacewatch
6 V00 201787 52047 3.88 2019 – 2023 5 Kitt Peak-Bok
7 703 121185 37126 3.26 1998 – 2023 26 Catalina Sky Survey
8 644 102331 34178 2.99 2001 – 2010 10 Palomar Mountain/NEAT
9 807 69921 33894 2.06 1997 – 2023 27 Cerro Tololo Observatory, La Serena
10 695 72480 33819 2.14 1995 – 2021 27 Kitt Peak
11 699 89486 27185 3.29 1998 – 2008 11 Lowell Observatory-LONEOS
12 568 56853 15377 3.70 1993 – 2022 30 Maunakea
13 645 31077 15227 2.04 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
14 291 22741 7591 3.00 2001 – 2023 23 LPL/Spacewatch II
15 309 49781 5877 8.47 2000 – 2023 24 Cerro Paranal
Sum 770 8376518 2288004 3.66 1950 – 2023 74 770 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
2 190 214 4 53.50 2013 – 2021 9 Gissar
3 N42 65 2 32.50 2014 – 2021 8 Tien-Shan Astronomical Observatory
4 181 28 1 28.00 2018 – 2018 1 Observatoire des Makes, Saint-Louis
5 258 1243 58 21.43 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 A84 32 2 16.00 2005 – 2013 9 TUBITAK National Observatory
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
12 270 53 4 13.25 2022 – 2023 2 Unistellar Network, Roving Observer
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 770 8376518 2288004 3.66 1950 – 2023 74 770 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  
1 675 156 39 4.00 1950 – 2023 74 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
4 413 181 71 2.55 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 4064 1009 4.03 1988 – 2022 35 European Southern Observatory, La Silla
8 071 387 79 4.90 1988 – 2020 33 NAO Rozhen, Smolyan
9 691 312724 103301 3.03 1990 – 2023 34 Steward Observatory, Kitt Peak-Spacewatch
10 511 127 22 5.77 1991 – 2023 33 Haute Provence
11 095 669 225 2.97 1991 – 2023 33 Crimea-Nauchnyi
12 808 461 227 2.03 1992 – 2000 9 El Leoncito
13 801 18 9 2.00 1992 – 1997 6 Oak Ridge Observatory
14 372 88 44 2.00 1992 – 2004 13 Geisei
15 376 16 8 2.00 1992 – 1998 7 Uenohara
Sum 770 8376518 2288004 3.66 1950 – 2023 74 770 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  
1 675 156 39 4.00 1950 – 2023 74 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 4064 1009 4.03 1988 – 2022 35 European Southern Observatory, La Silla
5 691 312724 103301 3.03 1990 – 2023 34 Steward Observatory, Kitt Peak-Spacewatch
6 071 387 79 4.90 1988 – 2020 33 NAO Rozhen, Smolyan
7 511 127 22 5.77 1991 – 2023 33 Haute Provence
8 095 669 225 2.97 1991 – 2023 33 Crimea-Nauchnyi
9 413 181 71 2.55 1977 – 2007 31 Siding Spring Observatory
10 033 677 219 3.09 1993 – 2023 31 Karl Schwarzschild Observatory, Tautenburg
11 381 163 20 8.15 1993 – 2023 31 Tokyo-Kiso
12 568 56853 15377 3.70 1993 – 2022 30 Maunakea
13 950 10900 2290 4.76 1994 – 2023 30 La Palma
14 595 15 7 2.14 1994 – 2022 29 Farra d'Isonzo
15 304 92 32 2.88 1994 – 2022 29 Las Campanas Observatory
Sum 770 8376518 2288004 3.66 1950 – 2023 74 770 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 56167243 638654 87.95 2004 – 2023 20 Mt. Lemmon Survey
2 F51 50393706 639408 78.81 2008 – 2023 16 Pan-STARRS 1, Haleakala
3 703 36716832 465622 78.86 1998 – 2023 26 Catalina Sky Survey
4 704 32703199 363985 89.85 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
5 T08 24136640 282338 85.49 2014 – 2022 9 ATLAS-MLO, Mauna Loa
6 T05 24021719 277828 86.46 2015 – 2023 9 ATLAS-HKO, Haleakala
7 C57 19405300 39932 485.96 2018 – 2022 5 TESS
8 F52 19130940 623086 30.70 2014 – 2023 10 Pan-STARRS 2, Haleakala
9 G45 16869909 374986 44.99 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 I41 14197180 376067 37.75 2002 – 2023 22 Palomar Mountain--ZTF
11 691 12840009 590618 21.74 1984 – 2023 40 Steward Observatory, Kitt Peak-Spacewatch
12 D29 12810274 500544 25.59 2006 – 2023 18 Purple Mountain Observatory, XuYi Station
13 W68 5908093 135104 43.73 2022 – 2023 2 ATLAS Chile, Rio Hurtado
14 699 5364120 261225 20.53 1998 – 2008 11 Lowell Observatory-LONEOS
15 644 3912521 304402 12.85 1990 – 2010 21 Palomar Mountain/NEAT
Sum 2289 370896158 640000 579.53 1801 – 2023 223 2289 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 50393706 639408 78.81 2008 – 2023 16 Pan-STARRS 1, Haleakala
2 G96 56167243 638654 87.95 2004 – 2023 20 Mt. Lemmon Survey
3 F52 19130940 623086 30.70 2014 – 2023 10 Pan-STARRS 2, Haleakala
4 691 12840009 590618 21.74 1984 – 2023 40 Steward Observatory, Kitt Peak-Spacewatch
5 D29 12810274 500544 25.59 2006 – 2023 18 Purple Mountain Observatory, XuYi Station
6 703 36716832 465622 78.86 1998 – 2023 26 Catalina Sky Survey
7 I41 14197180 376067 37.75 2002 – 2023 22 Palomar Mountain--ZTF
8 G45 16869909 374986 44.99 2011 – 2017 7 Space Surveillance Telescope, Atom Site
9 704 32703199 363985 89.85 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
10 644 3912521 304402 12.85 1990 – 2010 21 Palomar Mountain/NEAT
11 T08 24136640 282338 85.49 2014 – 2022 9 ATLAS-MLO, Mauna Loa
12 T05 24021719 277828 86.46 2015 – 2023 9 ATLAS-HKO, Haleakala
13 699 5364120 261225 20.53 1998 – 2008 11 Lowell Observatory-LONEOS
14 J43 2216193 228551 9.70 2007 – 2023 17 Oukaimeden Observatory, Marrakech
15 V00 1060742 204452 5.19 2019 – 2023 5 Kitt Peak-Bok
Sum 2289 370896158 640000 579.53 1801 – 2023 223 2289 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 C57 19405300 39932 485.96 2018 – 2022 5 TESS
4 217 769 3 256.33 2021 – 2021 1 Assah
5 O44 453 2 226.50 2012 – 2013 2 Lijiang Station, Yunnan Observatories
6 708 398 2 199.00 1895 – 1908 14 Chamberlin Observatory, Denver
7 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
8 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 Y28 3019 24 125.79 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
14 193 1021 10 102.10 2013 – 2020 8 Sanglok
15 270 2600 26 100.00 2021 – 2023 3 Unistellar Network, Roving Observer
Sum 2289 370896158 640000 579.53 1801 – 2023 223 2289 names

NUMOBS - Observations of numbered objects

Sorted by first year of observation

Click at right image for a histogram of the top 15 values.
First year of observation of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 535 21 1 21.00 1801 – 1801 1 Palermo
2 500 2886 56 51.54 1802 – 2021 220 Geocentric
3 528 164 18 9.11 1804 – 1983 180 Gottingen
4 541 165 33 5.00 1804 – 2000 197 Prague
5 027 188 39 4.82 1804 – 1942 139 Milan
6 283 4 1 4.00 1804 – 1804 1 Bremen
7 058 347 61 5.69 1820 – 1939 120 Kaliningrad
8 548 609 88 6.92 1822 – 1898 77 Berlin (1835-1913)
9 527 82 10 8.20 1823 – 1861 39 Altona
10 969 15 3 5.00 1825 – 1852 28 London-Regents Park
11 524 17 3 5.67 1827 – 1834 8 Mannheim
12 533 687 102 6.74 1829 – 1923 95 Padua
13 503 134 16 8.38 1830 – 1989 160 Cambridge
14 062 8586 1800 4.77 1830 – 1957 128 Turku
15 545 264 41 6.44 1830 – 1873 44 Vienna (before 1879)
Sum 2289 370896158 640000 579.53 1801 – 2023 223 2289 names

NUMOBS - Observations of numbered objects

Sorted by years span of observations

Click at right image for a histogram of the top 15 values.
Year range of observations of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 500 2886 56 51.54 1802 – 2021 220 Geocentric
2 541 165 33 5.00 1804 – 2000 197 Prague
3 528 164 18 9.11 1804 – 1983 180 Gottingen
4 084 23765 1087 21.86 1846 – 2013 168 Pulkovo
5 503 134 16 8.38 1830 – 1989 160 Cambridge
6 027 188 39 4.82 1804 – 1942 139 Milan
7 784 373 63 5.92 1866 – 2002 137 Stull Observatory, Alfred University
8 035 2976 100 29.76 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 17195 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 2289 370896158 640000 579.53 1801 – 2023 223 2289 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 68927290 2318400 29.73 2008 – 2023 16 Pan-STARRS 1, Haleakala
2 G96 68616960 1641598 41.80 2004 – 2023 20 Mt. Lemmon Survey
3 703 37420695 567182 65.98 1998 – 2023 26 Catalina Sky Survey
4 704 32851229 376857 87.17 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
5 F52 25120547 1327002 18.93 2014 – 2023 10 Pan-STARRS 2, Haleakala
6 T08 24283570 293667 82.69 2014 – 2022 9 ATLAS-MLO, Mauna Loa
7 T05 24156545 288302 83.79 2015 – 2023 9 ATLAS-HKO, Haleakala
8 C57 19447757 40501 480.18 2018 – 2022 5 TESS
9 G45 17169497 397798 43.16 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 I41 14711173 421950 34.86 2002 – 2023 22 Palomar Mountain--ZTF
11 691 14542924 945311 15.38 1984 – 2023 40 Steward Observatory, Kitt Peak-Spacewatch
12 D29 13269522 591057 22.45 2006 – 2023 18 Purple Mountain Observatory, XuYi Station
13 W68 5941377 137294 43.27 2022 – 2023 2 ATLAS Chile, Rio Hurtado
14 699 5483112 293944 18.65 1998 – 2009 12 Lowell Observatory-LONEOS
15 W84 5456381 534144 10.22 2002 – 2023 22 Cerro Tololo-DECam
Sum 2429 421055187 3759750 111.99 1661 – 2023 363 2429 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 68927290 2318400 29.73 2008 – 2023 16 Pan-STARRS 1, Haleakala
2 G96 68616960 1641598 41.80 2004 – 2023 20 Mt. Lemmon Survey
3 F52 25120547 1327002 18.93 2014 – 2023 10 Pan-STARRS 2, Haleakala
4 691 14542924 945311 15.38 1984 – 2023 40 Steward Observatory, Kitt Peak-Spacewatch
5 D29 13269522 591057 22.45 2006 – 2023 18 Purple Mountain Observatory, XuYi Station
6 703 37420695 567182 65.98 1998 – 2023 26 Catalina Sky Survey
7 W84 5456381 534144 10.22 2002 – 2023 22 Cerro Tololo-DECam
8 I41 14711173 421950 34.86 2002 – 2023 22 Palomar Mountain--ZTF
9 G45 17169497 397798 43.16 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 704 32851229 376857 87.17 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
11 644 4119537 357114 11.54 1990 – 2010 21 Palomar Mountain/NEAT
12 V00 1717698 354445 4.85 2019 – 2023 5 Kitt Peak-Bok
13 699 5483112 293944 18.65 1998 – 2009 12 Lowell Observatory-LONEOS
14 T08 24283570 293667 82.69 2014 – 2022 9 ATLAS-MLO, Mauna Loa
15 T05 24156545 288302 83.79 2015 – 2023 9 ATLAS-HKO, Haleakala
Sum 2429 421055187 3759750 111.99 1661 – 2023 363 2429 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 C57 19447757 40501 480.18 2018 – 2022 5 TESS
3 874 4857 12 404.75 1983 – 2013 31 Observatorio do Pico dos Dias, Itajuba
4 217 797 4 199.25 1984 – 2021 38 Assah
5 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
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
8 708 749 5 149.80 1895 – 1911 17 Chamberlin Observatory, Denver
9 248 5641 48 117.52 1989 – 1993 5 Hipparcos
10 G39 5044 44 114.64 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 32851229 376857 87.17 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
Sum 2429 421055187 3759750 111.99 1661 – 2023 363 2429 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 3140 103 30.49 1802 – 2021 220 Geocentric
5 541 207 41 5.05 1804 – 2017 214 Prague
6 027 229 46 4.98 1804 – 1942 139 Milan
7 528 243 28 8.68 1804 – 1986 183 Gottingen
8 283 4 1 4.00 1804 – 1804 1 Bremen
9 007 660 136 4.85 1819 – 1950 132 Paris
10 281 2 1 2.00 1819 – 1819 1 Bologna
11 058 583 81 7.20 1820 – 1939 120 Kaliningrad
12 548 686 99 6.93 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 2429 421055187 3759750 111.99 1661 – 2023 363 2429 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 3140 103 30.49 1802 – 2021 220 Geocentric
3 541 207 41 5.05 1804 – 2017 214 Prague
4 528 243 28 8.68 1804 – 1986 183 Gottingen
5 084 27160 1232 22.05 1846 – 2023 178 Pulkovo
6 503 356 56 6.36 1830 – 1993 164 Cambridge
7 189 283 51 5.55 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 23694 809 29.29 1882 – 2022 141 Mykolaiv
Sum 2429 421055187 3759750 111.99 1661 – 2023 363 2429 names