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
12 970 40 5 8.00 2005 – 2017 13 Chelmsford
13 246 26 3 8.67 2005 – 2017 13 Klet Observatory-KLENOT
14 204 131 17 7.71 2006 – 2018 13 Schiaparelli Observatory
15 291 79 13 6.08 2006 – 2018 13 LPL/Spacewatch II
Sum 195 34172 199 171.72 2000 – 2018 19 195 names

CMTOBS - Observations of comets

Sorted by number of observations

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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 T05 36874 532 69.31 2015 – 2024 10 ATLAS-HKO, Haleakala
3 T08 34975 470 74.41 2017 – 2024 8 ATLAS-MLO, Mauna Loa
4 585 34110 578 59.01 1986 – 2023 38 Kyiv comet station
5 349 29250 975 30.00 1999 – 2024 26 Ageo
6 C23 27827 535 52.01 2010 – 2024 15 Olmen
7 703 27692 903 30.67 1998 – 2024 27 Catalina Sky Survey
8 704 25844 667 38.75 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
9 A77 25723 843 30.51 2005 – 2024 20 Observatoire Chante-Perdrix, Dauban
10 G96 22658 1031 21.98 2004 – 2024 21 Mt. Lemmon Survey
11 H45 22240 403 55.19 2005 – 2024 20 Arkansas Sky Obs., Petit Jean Mountain South
12 F51 21467 1009 21.28 2009 – 2024 16 Pan-STARRS 1, Haleakala
13 958 20425 341 59.90 1997 – 2023 27 Observatoire de Dax
14 213 20174 722 27.94 2001 – 2024 24 Observatorio Montcabre
15 I81 19799 431 45.94 2011 – 2024 14 Tarbatness Observatory, Portmahomack
Sum 1622 1396045 4624 301.91 1661 – 2024 364 1622 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 12789 1259 10.16 2001 – 2024 24 Buchloe
3 G96 22658 1031 21.98 2004 – 2024 21 Mt. Lemmon Survey
4 F51 21467 1009 21.28 2009 – 2024 16 Pan-STARRS 1, Haleakala
5 349 29250 975 30.00 1999 – 2024 26 Ageo
6 H06 12790 967 13.23 2004 – 2024 21 iTelescope Observatory, Mayhill
7 204 7733 905 8.54 2001 – 2024 24 Schiaparelli Observatory
8 703 27692 903 30.67 1998 – 2024 27 Catalina Sky Survey
9 372 8703 879 9.90 1973 – 2023 51 Geisei
10 A77 25723 843 30.51 2005 – 2024 20 Observatoire Chante-Perdrix, Dauban
11 Q62 11254 760 14.81 2012 – 2024 13 iTelescope Observatory, Siding Spring
12 213 20174 722 27.94 2001 – 2024 24 Observatorio Montcabre
13 900 10265 672 15.28 1991 – 2024 34 Moriyama
14 704 25844 667 38.75 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
15 A71 9244 666 13.88 2005 – 2022 18 Stixendorf
Sum 1622 1396045 4624 301.91 1661 – 2024 364 1622 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 10215 18 567.50 2018 – 2023 6 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
4 708 351 3 117.00 1906 – 1911 6 Chamberlin Observatory, Denver
5 C40 9236 80 115.45 2012 – 2024 13 Kuban State University Astrophysical Observatory
6 190 3618 34 106.41 1969 – 2024 56 Gissar
7 I08 104 1 104.00 2011 – 2011 1 Alianza S4, Cerro Burek
8 A46 9089 89 102.12 2002 – 2006 5 Lelekovice
9 334 204 2 102.00 1973 – 1986 14 Tsingtao
10 K81 2946 29 101.59 2018 – 2023 6 P.M.P.H.R. Deep Sky Observatory, Atina
11 I80 97 1 97.00 2019 – 2019 1 Rose Cottage Observatory, Keighley
12 134 4159 45 92.42 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 W68 13428 170 78.99 2022 – 2024 3 ATLAS Chile, Rio Hurtado
Sum 1622 1396045 4624 301.91 1661 – 2024 364 1622 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 1622 1396045 4624 301.91 1661 – 2024 364 1622 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
9 822 759 45 16.87 1885 – 2019 135 Cordoba
10 084 2245 56 40.09 1877 – 2007 131 Pulkovo
11 541 42 8 5.25 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 1622 1396045 4624 301.91 1661 – 2024 364 1622 names

UNNOBS - Observations of unnumbered minor planets

Sorted by number of observations

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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 13905136 675026 20.60 2008 – 2024 17 Pan-STARRS 1, Haleakala
2 G96 9801016 593203 16.52 2004 – 2024 21 Mt. Lemmon Survey
3 F52 5015711 480475 10.44 2015 – 2024 10 Pan-STARRS 2, Haleakala
4 W84 1645812 111199 14.80 2012 – 2024 13 Cerro Tololo-DECam
5 691 1191311 223692 5.33 1985 – 2024 40 Steward Observatory, Kitt Peak-Spacewatch
6 V00 491115 104527 4.70 2019 – 2024 6 Kitt Peak-Bok
7 703 435706 51921 8.39 1998 – 2024 27 Catalina Sky Survey
8 I41 401056 35999 11.14 2002 – 2024 23 Palomar Mountain--ZTF
9 C51 344705 31327 11.00 2010 – 2024 15 WISE
10 D29 330893 67914 4.87 2006 – 2024 19 Purple Mountain Observatory, XuYi Station
11 G45 225467 17543 12.85 2012 – 2017 6 Space Surveillance Telescope, Atom Site
12 291 183627 42394 4.33 2001 – 2024 24 LPL/Spacewatch II
13 I52 179138 20402 8.78 2012 – 2024 13 Steward Observatory, Mt. Lemmon Station
14 568 162710 24826 6.55 1989 – 2022 34 Maunakea
15 H21 155281 21156 7.34 2009 – 2024 16 Astronomical Research Observatory, Westfield
Sum 1238 36950123 796854 46.37 1873 – 2024 152 1238 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 13905136 675026 20.60 2008 – 2024 17 Pan-STARRS 1, Haleakala
2 G96 9801016 593203 16.52 2004 – 2024 21 Mt. Lemmon Survey
3 F52 5015711 480475 10.44 2015 – 2024 10 Pan-STARRS 2, Haleakala
4 691 1191311 223692 5.33 1985 – 2024 40 Steward Observatory, Kitt Peak-Spacewatch
5 W84 1645812 111199 14.80 2012 – 2024 13 Cerro Tololo-DECam
6 V00 491115 104527 4.70 2019 – 2024 6 Kitt Peak-Bok
7 D29 330893 67914 4.87 2006 – 2024 19 Purple Mountain Observatory, XuYi Station
8 703 435706 51921 8.39 1998 – 2024 27 Catalina Sky Survey
9 291 183627 42394 4.33 2001 – 2024 24 LPL/Spacewatch II
10 I41 401056 35999 11.14 2002 – 2024 23 Palomar Mountain--ZTF
11 C51 344705 31327 11.00 2010 – 2024 15 WISE
12 807 138658 29633 4.68 1988 – 2024 37 Cerro Tololo Observatory, La Serena
13 568 162710 24826 6.55 1989 – 2022 34 Maunakea
14 645 66721 23256 2.87 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
15 695 70393 22610 3.11 1990 – 2024 35 Kitt Peak
Sum 1238 36950123 796854 46.37 1873 – 2024 152 1238 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 E09 162 1 162.00 2008 – 2008 1 Oakley Southern Sky Observatory, Coonabarabran
3 A84 1281 11 116.45 2002 – 2013 12 TUBITAK National Observatory
4 I27 1240 13 95.38 2010 – 2015 6 Barred Owl Observatory, Carp
5 C20 1655 18 91.94 2008 – 2023 16 Kislovodsk Mtn. Astronomical Stn., Pulkovo Obs.
6 C57 24422 396 61.67 2018 – 2021 4 TESS
7 H78 299 5 59.80 2010 – 2016 7 University of Narino Observatory, Pasto
8 B30 236 4 59.00 2007 – 2007 1 Szamotuly-Galowo
9 I23 50 1 50.00 2010 – 2010 1 Frosty Cold Observatory, Mash Harbor
10 Z73 98 2 49.00 2015 – 2017 3 Observatorio Nuevos Horizontes, Camas
11 C54 98 2 49.00 2020 – 2020 1 New Horizons
12 851 191 4 47.75 2021 – 2022 2 Burke-Gaffney Observatory, Halifax
13 W08 46 1 46.00 2017 – 2017 1 Jimginny Observatory, Naperville
14 H25 41 1 41.00 2009 – 2009 1 Harvest Moon Observatory, Northfield
15 258 3707 96 38.61 2018 – 2022 5 Gaia
Sum 1238 36950123 796854 46.37 1873 – 2024 152 1238 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 1292 754 1.71 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 1149 88 13.06 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
15 094 465 217 2.14 1912 – 2021 110 Crimea-Simeiz
Sum 1238 36950123 796854 46.37 1873 – 2024 152 1238 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 1292 754 1.71 1891 – 2013 123 Heidelberg-Konigstuhl
2 084 1149 88 13.06 1906 – 2023 118 Pulkovo
3 094 465 217 2.14 1912 – 2021 110 Crimea-Simeiz
4 006 172 32 5.38 1914 – 2022 109 Fabra Observatory, Barcelona
5 754 585 148 3.95 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 1199 507 2.36 1924 – 2014 91 Uccle
9 119 112 56 2.00 1938 – 2021 84 Abastuman
10 186 259 32 8.09 1942 – 2023 82 Kitab
11 073 636 88 7.23 1943 – 2024 82 Bucharest
12 672 4 3 1.33 1926 – 2003 78 Mount Wilson
13 711 8774 2164 4.05 1950 – 2021 72 McDonald Observatory, Fort Davis
14 675 1538 456 3.37 1952 – 2022 71 Palomar Mountain
15 057 71 40 1.77 1937 – 2004 68 Belgrade
Sum 1238 36950123 796854 46.37 1873 – 2024 152 1238 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 3195977 946036 3.38 2009 – 2024 16 Pan-STARRS 1, Haleakala
2 W84 1484297 272780 5.44 2002 – 2024 23 Cerro Tololo-DECam
3 G96 1402608 363787 3.86 2004 – 2024 21 Mt. Lemmon Survey
4 F52 768456 230687 3.33 2014 – 2024 11 Pan-STARRS 2, Haleakala
5 T09 372589 86247 4.32 2002 – 2023 22 Subaru Telescope, Maunakea
6 691 303254 100098 3.03 1990 – 2023 34 Steward Observatory, Kitt Peak-Spacewatch
7 V00 238240 61521 3.87 2019 – 2024 6 Kitt Peak-Bok
8 703 118776 36023 3.30 1998 – 2024 27 Catalina Sky Survey
9 644 102070 34090 2.99 2001 – 2010 10 Palomar Mountain/NEAT
10 699 89422 27158 3.29 1998 – 2008 11 Lowell Observatory-LONEOS
11 568 76141 19477 3.91 1993 – 2022 30 Maunakea
12 695 71162 33218 2.14 1995 – 2021 27 Kitt Peak
13 807 69240 33458 2.07 1997 – 2023 27 Cerro Tololo Observatory, La Serena
14 309 48512 5735 8.46 2000 – 2024 25 Cerro Paranal
15 645 30395 14900 2.04 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
Sum 774 8653275 2349853 3.68 1950 – 2024 75 774 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 3195977 946036 3.38 2009 – 2024 16 Pan-STARRS 1, Haleakala
2 G96 1402608 363787 3.86 2004 – 2024 21 Mt. Lemmon Survey
3 W84 1484297 272780 5.44 2002 – 2024 23 Cerro Tololo-DECam
4 F52 768456 230687 3.33 2014 – 2024 11 Pan-STARRS 2, Haleakala
5 691 303254 100098 3.03 1990 – 2023 34 Steward Observatory, Kitt Peak-Spacewatch
6 T09 372589 86247 4.32 2002 – 2023 22 Subaru Telescope, Maunakea
7 V00 238240 61521 3.87 2019 – 2024 6 Kitt Peak-Bok
8 703 118776 36023 3.30 1998 – 2024 27 Catalina Sky Survey
9 644 102070 34090 2.99 2001 – 2010 10 Palomar Mountain/NEAT
10 807 69240 33458 2.07 1997 – 2023 27 Cerro Tololo Observatory, La Serena
11 695 71162 33218 2.14 1995 – 2021 27 Kitt Peak
12 699 89422 27158 3.29 1998 – 2008 11 Lowell Observatory-LONEOS
13 568 76141 19477 3.91 1993 – 2022 30 Maunakea
14 645 30395 14900 2.04 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
15 O18 27655 9217 3.00 2023 – 2024 2 WFST, Lenghu
Sum 774 8653275 2349853 3.68 1950 – 2024 75 774 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 A84 23 1 23.00 2005 – 2005 1 TUBITAK National Observatory
6 258 1243 58 21.43 2018 – 2022 5 Gaia
7 O49 21 1 21.00 2020 – 2020 1 Purple Mountain Observatory, Yaoan Station
8 B41 18 1 18.00 2018 – 2018 1 Zlin Observatory
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
12 270 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 774 8653275 2349853 3.68 1950 – 2024 75 774 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
4 413 175 69 2.54 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 4020 999 4.02 1988 – 2022 35 European Southern Observatory, La Silla
8 071 387 79 4.90 1988 – 2020 33 NAO Rozhen, Smolyan
9 691 303254 100098 3.03 1990 – 2023 34 Steward Observatory, Kitt Peak-Spacewatch
10 511 112 20 5.60 1991 – 2023 33 Haute Provence
11 095 722 259 2.79 1991 – 2024 34 Crimea-Nauchnyi
12 808 461 227 2.03 1992 – 2000 9 El Leoncito
13 376 16 8 2.00 1992 – 1998 7 Uenohara
14 402 44 16 2.75 1992 – 1999 8 Dynic Astronomical Observatory
15 010 198 67 2.96 1992 – 2019 28 Caussols
Sum 774 8653275 2349853 3.68 1950 – 2024 75 774 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 4020 999 4.02 1988 – 2022 35 European Southern Observatory, La Silla
5 691 303254 100098 3.03 1990 – 2023 34 Steward Observatory, Kitt Peak-Spacewatch
6 095 722 259 2.79 1991 – 2024 34 Crimea-Nauchnyi
7 511 112 20 5.60 1991 – 2023 33 Haute Provence
8 071 387 79 4.90 1988 – 2020 33 NAO Rozhen, Smolyan
9 381 189 23 8.22 1993 – 2024 32 Tokyo-Kiso
10 033 637 208 3.06 1993 – 2023 31 Karl Schwarzschild Observatory, Tautenburg
11 413 175 69 2.54 1977 – 2007 31 Siding Spring Observatory
12 568 76141 19477 3.91 1993 – 2022 30 Maunakea
13 950 10588 2227 4.75 1994 – 2023 30 La Palma
14 104 430 157 2.74 1995 – 2024 30 San Marcello Pistoiese
15 304 89 31 2.87 1994 – 2022 29 Las Campanas Observatory
Sum 774 8653275 2349853 3.68 1950 – 2024 75 774 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 59270834 678568 87.35 2004 – 2024 21 Mt. Lemmon Survey
2 F51 53475889 679408 78.71 2008 – 2024 17 Pan-STARRS 1, Haleakala
3 703 36982695 477088 77.52 1998 – 2024 27 Catalina Sky Survey
4 704 32722884 366093 89.38 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
5 T05 25912364 281958 91.90 2015 – 2024 10 ATLAS-HKO, Haleakala
6 T08 25733321 287833 89.40 2014 – 2024 11 ATLAS-MLO, Mauna Loa
7 C57 21809611 41916 520.32 2018 – 2023 6 TESS
8 F52 21592984 665739 32.43 2014 – 2024 11 Pan-STARRS 2, Haleakala
9 G45 16934406 379409 44.63 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 I41 14299490 384043 37.23 2002 – 2023 22 Palomar Mountain--ZTF
11 691 13042251 618648 21.08 1984 – 2024 41 Steward Observatory, Kitt Peak-Spacewatch
12 D29 12947038 517874 25.00 2006 – 2024 19 Purple Mountain Observatory, XuYi Station
13 W68 7719932 165382 46.68 2022 – 2024 3 ATLAS Chile, Rio Hurtado
14 P07 6156461 224711 27.40 2021 – 2024 4 Space Surveillance Telescope, HEH Station
15 699 5370083 262453 20.46 1998 – 2008 11 Lowell Observatory-LONEOS
Sum 2327 393377983 680000 578.50 1801 – 2024 224 2327 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 53475889 679408 78.71 2008 – 2024 17 Pan-STARRS 1, Haleakala
2 G96 59270834 678568 87.35 2004 – 2024 21 Mt. Lemmon Survey
3 F52 21592984 665739 32.43 2014 – 2024 11 Pan-STARRS 2, Haleakala
4 691 13042251 618648 21.08 1984 – 2024 41 Steward Observatory, Kitt Peak-Spacewatch
5 D29 12947038 517874 25.00 2006 – 2024 19 Purple Mountain Observatory, XuYi Station
6 703 36982695 477088 77.52 1998 – 2024 27 Catalina Sky Survey
7 I41 14299490 384043 37.23 2002 – 2023 22 Palomar Mountain--ZTF
8 G45 16934406 379409 44.63 2011 – 2017 7 Space Surveillance Telescope, Atom Site
9 704 32722884 366093 89.38 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
10 644 3935757 308551 12.76 1990 – 2010 21 Palomar Mountain/NEAT
11 T08 25733321 287833 89.40 2014 – 2024 11 ATLAS-MLO, Mauna Loa
12 T05 25912364 281958 91.90 2015 – 2024 10 ATLAS-HKO, Haleakala
13 699 5370083 262453 20.46 1998 – 2008 11 Lowell Observatory-LONEOS
14 V00 1321248 245542 5.38 2019 – 2024 6 Kitt Peak-Bok
15 J43 2232399 231275 9.65 2007 – 2024 18 Oukaimeden Observatory, Marrakech
Sum 2327 393377983 680000 578.50 1801 – 2024 224 2327 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 21809611 41916 520.32 2018 – 2023 6 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 3024 25 120.96 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 2860 30 95.33 2021 – 2024 4 Unistellar Network, Roving Observer
Sum 2327 393377983 680000 578.50 1801 – 2024 224 2327 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 2327 393377983 680000 578.50 1801 – 2024 224 2327 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 23766 1088 21.84 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 1662 230 7.23 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 17198 2685 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 2327 393377983 680000 578.50 1801 – 2024 224 2327 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 70599309 2301168 30.68 2008 – 2024 17 Pan-STARRS 1, Haleakala
2 G96 70498461 1636268 43.08 2004 – 2024 21 Mt. Lemmon Survey
3 703 37567262 565632 66.42 1998 – 2024 27 Catalina Sky Survey
4 704 32851229 376545 87.24 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
5 F52 27385767 1377289 19.88 2014 – 2024 11 Pan-STARRS 2, Haleakala
6 T05 26031283 290220 89.69 2015 – 2024 10 ATLAS-HKO, Haleakala
7 T08 25858183 296670 87.16 2014 – 2024 11 ATLAS-MLO, Mauna Loa
8 C57 21844259 42326 516.10 2018 – 2023 6 TESS
9 G45 17168699 397283 43.22 2011 – 2017 7 Space Surveillance Telescope, Atom Site
10 I41 14711879 421826 34.88 2002 – 2024 23 Palomar Mountain--ZTF
11 691 14545575 942863 15.43 1984 – 2024 41 Steward Observatory, Kitt Peak-Spacewatch
12 D29 13299480 591715 22.48 2006 – 2024 19 Purple Mountain Observatory, XuYi Station
13 W68 7756152 167533 46.30 2022 – 2024 3 ATLAS Chile, Rio Hurtado
14 P07 6205450 230391 26.93 2021 – 2024 4 Space Surveillance Telescope, HEH Station
15 W84 5520598 541594 10.19 2002 – 2024 23 Cerro Tololo-DECam
Sum 2465 440439709 3828337 115.05 1661 – 2024 364 2465 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 70599309 2301168 30.68 2008 – 2024 17 Pan-STARRS 1, Haleakala
2 G96 70498461 1636268 43.08 2004 – 2024 21 Mt. Lemmon Survey
3 F52 27385767 1377289 19.88 2014 – 2024 11 Pan-STARRS 2, Haleakala
4 691 14545575 942863 15.43 1984 – 2024 41 Steward Observatory, Kitt Peak-Spacewatch
5 D29 13299480 591715 22.48 2006 – 2024 19 Purple Mountain Observatory, XuYi Station
6 703 37567262 565632 66.42 1998 – 2024 27 Catalina Sky Survey
7 W84 5520598 541594 10.19 2002 – 2024 23 Cerro Tololo-DECam
8 I41 14711879 421826 34.88 2002 – 2024 23 Palomar Mountain--ZTF
9 V00 2051139 411672 4.98 2019 – 2024 6 Kitt Peak-Bok
10 G45 17168699 397283 43.22 2011 – 2017 7 Space Surveillance Telescope, Atom Site
11 704 32851229 376545 87.24 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
12 644 4119557 356989 11.54 1990 – 2010 21 Palomar Mountain/NEAT
13 T08 25858183 296670 87.16 2014 – 2024 11 ATLAS-MLO, Mauna Loa
14 699 5483092 293820 18.66 1998 – 2009 12 Lowell Observatory-LONEOS
15 T05 26031283 290220 89.69 2015 – 2024 10 ATLAS-HKO, Haleakala
Sum 2465 440439709 3828337 115.05 1661 – 2024 364 2465 names

ALL - Observations of all objects together

Sorted by observations per object

Click at right image for a histogram of the top 15 values.

Part of observations per object of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 249 36997 13 2845.92 1996 – 2023 28 SOHO
2 768 1966 2 983.00 1930 – 1934 5 Dearborn Observatory, Evanston (aft. Oct. 1939)
3 C49 3059 5 611.80 2007 – 2023 17 STEREO-A
4 C57 21844259 42326 516.10 2018 – 2023 6 TESS
5 874 4857 12 404.75 1983 – 2013 31 Observatorio do Pico dos Dias, Itajuba
6 C50 1392 5 278.40 2007 – 2013 7 STEREO-B
7 G39 5044 24 210.17 2012 – 2021 10 ROAD, San Pedro de Atacama
8 217 797 4 199.25 1984 – 2021 38 Assah
9 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
10 708 749 4 187.25 1895 – 1911 17 Chamberlin Observatory, Denver
11 A46 9181 54 170.02 2002 – 2006 5 Lelekovice
12 W78 331 2 165.50 2017 – 2018 2 Clay Telescope, Harvard University
13 L98 5201 32 162.53 2017 – 2018 2 La Sagra Observatory, Puebla de Don Fadrique
14 Q19 1001 8 125.13 2015 – 2024 10 Machida
15 248 5641 48 117.52 1989 – 1993 5 Hipparcos
Sum 2465 440439709 3828337 115.05 1661 – 2024 364 2465 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 3 17.33 1801 – 1903 103 Palermo
4 500 3140 63 49.84 1802 – 2021 220 Geocentric
5 541 211 39 5.41 1804 – 2017 214 Prague
6 027 229 44 5.20 1804 – 1942 139 Milan
7 528 243 22 11.05 1804 – 1986 183 Gottingen
8 283 4 1 4.00 1804 – 1804 1 Bremen
9 007 674 128 5.27 1819 – 1950 132 Paris
10 281 2 1 2.00 1819 – 1819 1 Bologna
11 058 583 73 7.99 1820 – 1939 120 Kaliningrad
12 548 686 94 7.30 1822 – 1910 89 Berlin (1835-1913)
13 527 91 12 7.58 1823 – 1871 49 Altona
14 969 15 3 5.00 1825 – 1852 28 London-Regents Park
15 282 8 2 4.00 1827 – 1858 32 Nimes
Sum 2465 440439709 3828337 115.05 1661 – 2024 364 2465 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 63 49.84 1802 – 2021 220 Geocentric
3 541 211 39 5.41 1804 – 2017 214 Prague
4 528 243 22 11.05 1804 – 1986 183 Gottingen
5 084 27160 1198 22.67 1846 – 2023 178 Pulkovo
6 503 356 33 10.79 1830 – 1993 164 Cambridge
7 189 283 41 6.90 1861 – 2019 159 Geneva (before 1967)
8 051 1080 32 33.75 1836 – 1987 152 Royal Observatory, Cape of Good Hope
9 075 841 258 3.26 1835 – 1985 151 Tartu
10 995 124 12 10.33 1850 – 1997 148 Durham
11 784 511 79 6.47 1866 – 2012 147 Stull Observatory, Alfred University
12 062 8796 1851 4.75 1830 – 1973 144 Turku
13 797 363 26 13.96 1879 – 2022 144 Yale Observatory, New Haven
14 524 49 5 9.80 1827 – 1969 143 Mannheim
15 089 24162 783 30.86 1882 – 2023 142 Mykolaiv
Sum 2465 440439709 3828337 115.05 1661 – 2024 364 2465 names