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 3688 139 26.53 1984 – 2019 36 Mauna Kea
2 415 2024 15 134.93 2004 – 2010 7 Kambah
3 704 1655 9 183.89 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
4 689 1306 8 163.25 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
5 G36 846 9 94.00 2011 – 2018 8 Calar Alto-CASADO
6 691 611 15 40.73 1992 – 2017 26 Steward Observatory, Kitt Peak-Spacewatch
7 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
8 E07 557 17 32.76 2011 – 2015 5 Murrumbateman
9 F51 493 21 23.48 2011 – 2018 8 Pan-STARRS 1, Haleakala
10 673 448 9 49.78 1968 – 2017 50 Table Mountain Observatory, Wrightwood
11 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
12 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
13 G45 427 7 61.00 2014 – 2016 3 Space Surveillance Telescope, Atom Site
14 T05 405 9 45.00 2016 – 2020 5 ATLAS-HKO, Haleakala
15 807 366 67 5.46 1998 – 2018 21 Cerro Tololo Observatory, La Serena
Sum 145 20763 145 143.19 1894 – 2020 127 145 names

SATOBS - Observations of natural satellites

Sorted by number of observed objects

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

Number of objects of top 15 stations at Minor Planet Center for SATOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 568 3688 139 26.53 1984 – 2019 36 Mauna Kea
2 807 366 67 5.46 1998 – 2018 21 Cerro Tololo Observatory, La Serena
3 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
4 304 324 46 7.04 2002 – 2018 17 Las Campanas Observatory
5 695 154 28 5.50 1969 – 2013 45 Kitt Peak
6 W84 236 24 9.83 2013 – 2019 7 Cerro Tololo-DECam
7 809 178 22 8.09 1981 – 2013 33 European Southern Observatory, La Silla
8 F51 493 21 23.48 2011 – 2018 8 Pan-STARRS 1, Haleakala
9 950 78 19 4.11 1997 – 2011 15 La Palma
10 E07 557 17 32.76 2011 – 2015 5 Murrumbateman
11 309 110 17 6.47 2000 – 2010 11 Cerro Paranal
12 G96 291 17 17.12 2005 – 2018 14 Mt. Lemmon Survey
13 691 611 15 40.73 1992 – 2017 26 Steward Observatory, Kitt Peak-Spacewatch
14 415 2024 15 134.93 2004 – 2010 7 Kambah
15 644 242 11 22.00 2001 – 2006 6 Palomar Mountain/NEAT
Sum 145 20763 145 143.19 1894 – 2020 127 145 names

SATOBS - Observations of natural satellites

Sorted by observations per object

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

Part of observations per object of top 15 stations at Minor Planet Center for SATOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 G80 217 1 217.00 2015 – 2015 1 Sierra Remote Observatories, Auberry
2 286 210 1 210.00 2003 – 2005 3 Yunnan Observatory
3 704 1655 9 183.89 1998 – 2013 16 Lincoln Laboratory ETS, New Mexico
4 689 1306 8 163.25 1958 – 2012 55 U.S. Naval Observatory, Flagstaff
5 415 2024 15 134.93 2004 – 2010 7 Kambah
6 337 115 1 115.00 2003 – 2004 2 Sheshan, formerly Zo-Se
7 G36 846 9 94.00 2011 – 2018 8 Calar Alto-CASADO
8 511 170 2 85.00 1998 – 1999 2 Haute Provence
9 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
10 G45 427 7 61.00 2014 – 2016 3 Space Surveillance Telescope, Atom Site
11 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
12 673 448 9 49.78 1968 – 2017 50 Table Mountain Observatory, Wrightwood
13 874 433 9 48.11 1993 – 1999 7 Observatorio do Pico dos Dias, Itajuba
14 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
15 000 181 4 45.25 1906 – 1910 5 Greenwich
Sum 145 20763 145 143.19 1894 – 2020 127 145 names

SATOBS - Observations of natural satellites

Sorted by first year of observation

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

First year of observation of top 15 stations at Minor Planet Center for SATOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 802 1 1 1.00 1894 – 1894 1 Harvard Observatory, Cambridge
2 800 16 2 8.00 1898 – 1899 2 Harvard Observatory, Arequipa
3 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
4 754 75 4 18.75 1904 – 1955 52 Yerkes Observatory, Williams Bay
5 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
6 000 181 4 45.25 1906 – 1910 5 Greenwich
7 024 14 3 4.67 1908 – 1909 2 Heidelberg-Konigstuhl
8 087 22 1 22.00 1911 – 1911 1 Helwan
9 672 199 8 24.88 1916 – 1951 36 Mount Wilson
10 690 23 3 7.67 1929 – 1981 53 Lowell Observatory, Flagstaff
11 094 1 1 1.00 1929 – 1929 1 Crimea-Simeis
12 078 1 1 1.00 1935 – 1935 1 Johannesburg
13 822 17 2 8.50 1939 – 1952 14 Cordoba
14 711 584 10 58.40 1942 – 1995 54 McDonald Observatory, Fort Davis
15 074 8 1 8.00 1957 – 1957 1 Boyden Observatory, Bloemfontein
Sum 145 20763 145 143.19 1894 – 2020 127 145 names

SATOBS - Observations of natural satellites

Sorted by years span of observations

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

Year range of observations of top 15 stations at Minor Planet Center for SATOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 662 313 5 62.60 1904 – 1969 66 Lick Observatory, Mount Hamilton
2 689 1306 8 163.25 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
6 673 448 9 49.78 1968 – 2017 50 Table Mountain Observatory, Wrightwood
7 695 154 28 5.50 1969 – 2013 45 Kitt Peak
8 675 444 46 9.65 1974 – 2011 38 Palomar Mountain
9 672 199 8 24.88 1916 – 1951 36 Mount Wilson
10 568 3688 139 26.53 1984 – 2019 36 Mauna Kea
11 693 25 6 4.17 1967 – 2000 34 Catalina Station, Tucson
12 809 178 22 8.09 1981 – 2013 33 European Southern Observatory, La Silla
13 691 611 15 40.73 1992 – 2017 26 Steward Observatory, Kitt Peak-Spacewatch
14 786 47 1 47.00 1905 – 1927 23 U.S. Naval Obs., Washington (since 1893)
15 807 366 67 5.46 1998 – 2018 21 Cerro Tololo Observatory, La Serena
Sum 145 20763 145 143.19 1894 – 2020 127 145 names

ARTSAT - Observations of artifical satellites

Sorted by number of observations

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

Number of observations of top 15 stations at Minor Planet Center for ARTSAT class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 C40 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
13 168 61 1 61.00 2014 – 2014 1 Kourovskaya
14 J75 793 13 61.00 2007 – 2013 7 OAM Observatory, La Sagra
15 958 182 3 60.67 2013 – 2014 2 Observatoire de Dax
Sum 195 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 33111 556 59.55 1986 – 2021 36 Kyiv comet station
3 349 26026 850 30.62 1999 – 2021 23 Ageo
4 704 25764 633 40.70 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
5 H45 22026 396 55.62 2005 – 2020 16 Arkansas Sky Obs., Petit Jean Mountain South
6 T08 20702 347 59.66 2017 – 2021 5 ATLAS-MLO, Mauna Loa
7 C23 20520 410 50.05 2010 – 2020 11 Olmen
8 958 20351 325 62.62 1997 – 2020 24 Observatoire de Dax
9 T05 20094 413 48.65 2015 – 2021 7 ATLAS-HKO, Haleakala
10 703 19552 780 25.07 1998 – 2021 24 Catalina Sky Survey
11 213 18801 658 28.57 2001 – 2021 21 Observatorio Montcabre
12 A77 18367 658 27.91 2005 – 2021 17 Observatoire Chante-Perdrix, Dauban
13 160 17322 366 47.33 1998 – 2021 24 Castelmartini
14 B96 16608 383 43.36 2009 – 2021 13 Brixiis Observatory, Kruibeke
15 G96 16018 817 19.61 2004 – 2021 18 Mt. Lemmon Survey
Sum 1485 1146119 4003 286.32 1661 – 2021 361 1485 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 10201 1083 9.42 2001 – 2021 21 Buchloe
3 H06 11586 864 13.41 2004 – 2021 18 iTelescope Observatory, Mayhill
4 372 8675 864 10.04 1973 – 2021 49 Geisei
5 349 26026 850 30.62 1999 – 2021 23 Ageo
6 G96 16018 817 19.61 2004 – 2021 18 Mt. Lemmon Survey
7 204 7175 800 8.97 2001 – 2021 21 Schiaparelli Observatory
8 F51 15761 794 19.85 2009 – 2021 13 Pan-STARRS 1, Haleakala
9 703 19552 780 25.07 1998 – 2021 24 Catalina Sky Survey
10 213 18801 658 28.57 2001 – 2021 21 Observatorio Montcabre
11 A77 18367 658 27.91 2005 – 2021 17 Observatoire Chante-Perdrix, Dauban
12 A71 8905 636 14.00 2005 – 2021 17 Stixendorf
13 704 25764 633 40.70 1996 – 2013 18 Lincoln Laboratory ETS, New Mexico
14 130 2675 616 4.34 1997 – 2021 25 Lumezzane
15 Q62 7713 614 12.56 2012 – 2021 10 iTelescope Observatory, Siding Spring
Sum 1485 1146119 4003 286.32 1661 – 2021 361 1485 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 G39 4932 29 170.07 2014 – 2021 8 ROAD, San Pedro de Atacama
2 J92 138 1 138.00 2004 – 2004 1 Beaconsfield
3 L28 260 2 130.00 2018 – 2020 3 ISON-Castelgrande Observatory
4 K81 2915 23 126.74 2018 – 2020 3 P.M.P.H.R. Deep Sky Observatory, Atina
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 C40 2195 22 99.77 2012 – 2020 9 Kuban State University Astrophysical Observatory
10 I80 97 1 97.00 2019 – 2019 1 Rose Cottage Observatory, Keighley
11 190 2055 23 89.35 1969 – 2021 53 Gissar
12 813 79 1 79.00 1909 – 1910 2 Santiago-Quinta Normal (1862-1920)
13 071 9393 128 73.38 1983 – 2018 36 NAO Rozhen, Smolyan
14 A84 137 2 68.50 2018 – 2019 2 TUBITAK National Observatory
15 309 1358 20 67.90 1999 – 2019 21 Cerro Paranal
Sum 1485 1146119 4003 286.32 1661 – 2021 361 1485 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 1485 1146119 4003 286.32 1661 – 2021 361 1485 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 1673 56 29.88 1882 – 2020 139 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 1485 1146119 4003 286.32 1661 – 2021 361 1485 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 12101315 557890 21.69 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 9191910 510928 17.99 2004 – 2021 18 Mt. Lemmon Survey
3 F52 1722831 224121 7.69 2014 – 2021 8 Pan-STARRS 2, Haleakala
4 691 1633739 267136 6.12 1985 – 2021 37 Steward Observatory, Kitt Peak-Spacewatch
5 W84 641496 37677 17.03 2012 – 2021 10 Cerro Tololo-DECam
6 703 607368 72758 8.35 1998 – 2021 24 Catalina Sky Survey
7 I41 556482 45665 12.19 2002 – 2021 20 Palomar Mountain--ZTF
8 C51 354025 33078 10.70 2010 – 2021 12 WISE
9 G45 254675 19019 13.39 2013 – 2017 5 Space Surveillance Telescope, Atom Site
10 D29 240677 55974 4.30 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
11 291 204405 47791 4.28 2001 – 2021 21 LPL/Spacewatch II
12 704 171274 17430 9.83 1981 – 2013 33 Lincoln Laboratory ETS, New Mexico
13 644 160377 26935 5.95 2001 – 2007 7 Palomar Mountain/NEAT
14 568 151653 21208 7.15 1989 – 2021 33 Mauna Kea
15 H21 134495 17031 7.90 2009 – 2021 13 Astronomical Research Observatory, Westfield
Sum 1107 30279629 702033 43.13 1873 – 2021 149 1107 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 12101315 557890 21.69 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 9191910 510928 17.99 2004 – 2021 18 Mt. Lemmon Survey
3 691 1633739 267136 6.12 1985 – 2021 37 Steward Observatory, Kitt Peak-Spacewatch
4 F52 1722831 224121 7.69 2014 – 2021 8 Pan-STARRS 2, Haleakala
5 703 607368 72758 8.35 1998 – 2021 24 Catalina Sky Survey
6 D29 240677 55974 4.30 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
7 291 204405 47791 4.28 2001 – 2021 21 LPL/Spacewatch II
8 I41 556482 45665 12.19 2002 – 2021 20 Palomar Mountain--ZTF
9 W84 641496 37677 17.03 2012 – 2021 10 Cerro Tololo-DECam
10 C51 354025 33078 10.70 2010 – 2021 12 WISE
11 645 81517 28007 2.91 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
12 644 160377 26935 5.95 2001 – 2007 7 Palomar Mountain/NEAT
13 807 107700 22417 4.80 1988 – 2021 34 Cerro Tololo Observatory, La Serena
14 568 151653 21208 7.15 1989 – 2021 33 Mauna Kea
15 J04 71528 20846 3.43 2009 – 2021 13 ESA Optical Ground Station, Tenerife
Sum 1107 30279629 702033 43.13 1873 – 2021 149 1107 names

UNNOBS - Observations of unnumbered minor planets

Sorted by observations per object

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

Part of observations per object of top 15 stations at Minor Planet Center for UNNOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 217 320 1 320.00 2021 – 2021 1 Assah
2 L50 296 1 296.00 2019 – 2019 1 GenShtab Observatory, Nauchnij
3 A84 1286 11 116.91 2002 – 2013 12 TUBITAK National Observatory
4 Z73 349 3 116.33 2015 – 2017 3 Observatorio Nuevos Horizontes, Camas
5 E09 177 2 88.50 2008 – 2009 2 Oakley Southern Sky Observatory, Coonabarabran
6 I27 1274 16 79.63 2010 – 2015 6 Barred Owl Observatory, Carp
7 H78 463 6 77.17 2010 – 2017 8 University of Narino Observatory, Pasto
8 C40 656 9 72.89 2012 – 2021 10 Kuban State University Astrophysical Observatory
9 B30 236 4 59.00 2007 – 2007 1 Szamotuly-Galowo
10 W08 46 1 46.00 2017 – 2017 1 Jimginny Observatory, Naperville
11 B92 41 1 41.00 2017 – 2017 1 Chinon
12 H25 41 1 41.00 2009 – 2009 1 Harvest Moon Observatory, Northfield
13 258 3654 90 40.60 2018 – 2020 3 Gaia
14 I23 80 2 40.00 2010 – 2010 1 Frosty Cold Observatory, Mash Harbor
15 A38 115 3 38.33 2003 – 2006 4 Campocatino Automated Telescope, Collepardo
Sum 1107 30279629 702033 43.13 1873 – 2021 149 1107 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 1301 756 1.72 1891 – 2013 123 Heidelberg-Konigstuhl
6 007 1 1 1.00 1892 – 1892 1 Paris
7 537 1 1 1.00 1898 – 1898 1 Urania Observatory, Berlin
8 800 20 20 1.00 1899 – 1922 24 Harvard Observatory, Arequipa
9 786 6 4 1.50 1903 – 1996 94 U.S. Naval Obs., Washington (since 1893)
10 690 66 49 1.35 1906 – 1961 56 Lowell Observatory, Flagstaff
11 803 25 22 1.14 1906 – 1910 5 Taunton
12 084 1281 108 11.86 1906 – 2010 105 Pulkovo
13 078 178 166 1.07 1911 – 1954 44 Johannesburg
14 662 68 29 2.34 1911 – 2004 94 Lick Observatory, Mount Hamilton
15 094 511 221 2.31 1912 – 2020 109 Crimea-Simeis
Sum 1107 30279629 702033 43.13 1873 – 2021 149 1107 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 1301 756 1.72 1891 – 2013 123 Heidelberg-Konigstuhl
2 094 511 221 2.31 1912 – 2020 109 Crimea-Simeis
3 084 1281 108 11.86 1906 – 2010 105 Pulkovo
4 006 251 34 7.38 1914 – 2018 105 Fabra Observatory, Barcelona
5 754 687 155 4.43 1924 – 2018 95 Yerkes Observatory, Williams Bay
6 662 68 29 2.34 1911 – 2004 94 Lick Observatory, Mount Hamilton
7 786 6 4 1.50 1903 – 1996 94 U.S. Naval Obs., Washington (since 1893)
8 012 1617 553 2.92 1924 – 2014 91 Uccle
9 119 98 53 1.85 1938 – 2021 84 Abastuman
10 186 239 32 7.47 1942 – 2021 80 Kitab
11 672 7 4 1.75 1926 – 2003 78 Mount Wilson
12 073 196 26 7.54 1943 – 2020 78 Bucharest
13 711 9469 2330 4.06 1950 – 2021 72 McDonald Observatory, Fort Davis
14 675 1835 500 3.67 1952 – 2021 70 Palomar Mountain
15 057 71 40 1.77 1937 – 2004 68 Belgrade
Sum 1107 30279629 702033 43.13 1873 – 2021 149 1107 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 4668918 1366787 3.42 2009 – 2021 13 Pan-STARRS 1, Haleakala
2 G96 2528486 657397 3.85 2004 – 2021 18 Mt. Lemmon Survey
3 W84 643500 75913 8.48 2012 – 2021 10 Cerro Tololo-DECam
4 691 485112 161302 3.01 1990 – 2021 32 Steward Observatory, Kitt Peak-Spacewatch
5 703 244713 102092 2.40 1998 – 2021 24 Catalina Sky Survey
6 F52 198203 59248 3.35 2014 – 2021 8 Pan-STARRS 2, Haleakala
7 644 107807 35981 3.00 2001 – 2010 10 Palomar Mountain/NEAT
8 699 92571 28710 3.22 1998 – 2008 11 Lowell Observatory-LONEOS
9 695 87609 40779 2.15 1995 – 2021 27 Kitt Peak
10 807 81113 39264 2.07 1995 – 2021 27 Cerro Tololo Observatory, La Serena
11 568 79860 19539 4.09 1993 – 2021 29 Mauna Kea
12 309 63676 7384 8.62 2000 – 2021 22 Cerro Paranal
13 T05 62853 28298 2.22 2015 – 2021 7 ATLAS-HKO, Haleakala
14 T08 54936 31709 1.73 2014 – 2021 8 ATLAS-MLO, Mauna Loa
15 V00 48873 12622 3.87 2019 – 2021 3 Kitt Peak-Bok
Sum 715 9803972 2785982 3.52 1950 – 2021 72 715 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 4668918 1366787 3.42 2009 – 2021 13 Pan-STARRS 1, Haleakala
2 G96 2528486 657397 3.85 2004 – 2021 18 Mt. Lemmon Survey
3 691 485112 161302 3.01 1990 – 2021 32 Steward Observatory, Kitt Peak-Spacewatch
4 703 244713 102092 2.40 1998 – 2021 24 Catalina Sky Survey
5 W84 643500 75913 8.48 2012 – 2021 10 Cerro Tololo-DECam
6 F52 198203 59248 3.35 2014 – 2021 8 Pan-STARRS 2, Haleakala
7 695 87609 40779 2.15 1995 – 2021 27 Kitt Peak
8 807 81113 39264 2.07 1995 – 2021 27 Cerro Tololo Observatory, La Serena
9 644 107807 35981 3.00 2001 – 2010 10 Palomar Mountain/NEAT
10 T08 54936 31709 1.73 2014 – 2021 8 ATLAS-MLO, Mauna Loa
11 699 92571 28710 3.22 1998 – 2008 11 Lowell Observatory-LONEOS
12 T05 62853 28298 2.22 2015 – 2021 7 ATLAS-HKO, Haleakala
13 645 43261 21313 2.03 1998 – 2009 12 Apache Point-Sloan Digital Sky Survey
14 568 79860 19539 4.09 1993 – 2021 29 Mauna Kea
15 291 41790 14024 2.98 2001 – 2021 21 LPL/Spacewatch II
Sum 715 9803972 2785982 3.52 1950 – 2021 72 715 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  
1 258 1161 40 29.02 2018 – 2020 3 Gaia
2 L32 52 2 26.00 2016 – 2016 1 Korea Microlensing Telescope Network-SAAO
3 O49 21 1 21.00 2020 – 2020 1 Purple Mountain Observatory, Yaoan Station
4 Z57 20 1 20.00 2021 – 2021 1 Observatorio Zuben, Alhaurin de la Torre
5 B41 18 1 18.00 2018 – 2018 1 Zlin Observatory
6 115 16 1 16.00 1998 – 1998 1 Zelenchukskaya
7 169 16 1 16.00 2012 – 2012 1 Airali Observatory
8 C35 15 1 15.00 2021 – 2021 1 Terrassa
9 J13 1833 130 14.10 2011 – 2020 10 La Palma-Liverpool Telescope
10 740 66 5 13.20 2004 – 2004 1 SFA Observatory, Nacogdoches
11 181 52 4 13.00 2018 – 2018 1 Observatoire des Makes, Saint-Louis
12 J70 13 1 13.00 2007 – 2008 2 Obs. Astronomico Vega del Thader, El Palmar
13 D89 12 1 12.00 2011 – 2011 1 Yamagata
14 Z37 12 1 12.00 2020 – 2020 1 Northolt Branch Observatory 3, Blandford Forum
15 I47 23 2 11.50 2014 – 2018 5 Pierre Auger Observatory, Malargue
Sum 715 9803972 2785982 3.52 1950 – 2021 72 715 names

ITF - Observations of tracklets (1-night objects)

Sorted by first year of observation

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

First year of observation of top 15 stations at Minor Planet Center for ITF class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 675 166 49 3.39 1950 – 2014 65 Palomar Mountain
2 261 51 26 1.96 1950 – 1998 49 Palomar Mountain-DSS
3 260 66 34 1.94 1974 – 1995 22 Siding Spring Observatory-DSS
4 413 364 183 1.99 1977 – 2007 31 Siding Spring Observatory
5 046 24 5 4.80 1982 – 2017 36 Klet Observatory, Ceske Budejovice
6 098 64 34 1.88 1983 – 1998 16 Asiago Observatory, Cima Ekar
7 071 470 111 4.23 1988 – 2020 33 NAO Rozhen, Smolyan
8 809 5670 1903 2.98 1988 – 2013 26 European Southern Observatory, La Silla
9 691 485112 161302 3.01 1990 – 2021 32 Steward Observatory, Kitt Peak-Spacewatch
10 511 75 21 3.57 1991 – 2020 30 Haute Provence
11 095 759 569 1.33 1991 – 2021 31 Crimea-Nauchnij
12 503 1 1 1.00 1991 – 1991 1 Cambridge
13 877 6 3 2.00 1992 – 1993 2 Okutama
14 399 66 33 2.00 1992 – 1995 4 Kushiro
15 364 4 2 2.00 1992 – 1992 1 YCPM Kagoshima Station
Sum 715 9803972 2785982 3.52 1950 – 2021 72 715 names

ITF - Observations of tracklets (1-night objects)

Sorted by years span of observations

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

Year range of observations of top 15 stations at Minor Planet Center for ITF class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 675 166 49 3.39 1950 – 2014 65 Palomar Mountain
2 261 51 26 1.96 1950 – 1998 49 Palomar Mountain-DSS
3 046 24 5 4.80 1982 – 2017 36 Klet Observatory, Ceske Budejovice
4 071 470 111 4.23 1988 – 2020 33 NAO Rozhen, Smolyan
5 691 485112 161302 3.01 1990 – 2021 32 Steward Observatory, Kitt Peak-Spacewatch
6 413 364 183 1.99 1977 – 2007 31 Siding Spring Observatory
7 095 759 569 1.33 1991 – 2021 31 Crimea-Nauchnij
8 511 75 21 3.57 1991 – 2020 30 Haute Provence
9 033 175 62 2.82 1992 – 2021 30 Karl Schwarzschild Observatory, Tautenburg
10 381 94 13 7.23 1993 – 2021 29 Tokyo-Kiso
11 568 79860 19539 4.09 1993 – 2021 29 Mauna Kea
12 010 215 77 2.79 1992 – 2019 28 Caussols
13 950 14687 3009 4.88 1994 – 2020 27 La Palma
14 807 81113 39264 2.07 1995 – 2021 27 Cerro Tololo Observatory, La Serena
15 695 87609 40779 2.15 1995 – 2021 27 Kitt Peak
Sum 715 9803972 2785982 3.52 1950 – 2021 72 715 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 41989832 565939 74.19 2004 – 2021 18 Mt. Lemmon Survey
2 F51 38865124 566552 68.60 2008 – 2021 14 Pan-STARRS 1, Haleakala
3 704 32652544 358934 90.97 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
4 703 30170098 440723 68.46 1998 – 2021 24 Catalina Sky Survey
5 T08 16698765 251569 66.38 2014 – 2021 8 ATLAS-MLO, Mauna Loa
6 T05 16054568 246120 65.23 2015 – 2021 7 ATLAS-HKO, Haleakala
7 G45 13907514 337171 41.25 2011 – 2017 7 Space Surveillance Telescope, Atom Site
8 691 12343402 534272 23.10 1984 – 2021 38 Steward Observatory, Kitt Peak-Spacewatch
9 I41 11353942 326054 34.82 2002 – 2021 20 Palomar Mountain--ZTF
10 D29 8379452 428540 19.55 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
11 F52 7794424 469341 16.61 2014 – 2021 8 Pan-STARRS 2, Haleakala
12 699 5350232 258512 20.70 1998 – 2008 11 Lowell Observatory-LONEOS
13 644 3849647 294531 13.07 1990 – 2010 21 Palomar Mountain/NEAT
14 C51 3222250 161696 19.93 2010 – 2021 12 WISE
15 E12 2220943 167968 13.22 2003 – 2013 11 Siding Spring Survey
Sum 2118 266099864 567132 469.20 1801 – 2021 221 2118 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 38865124 566552 68.60 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 41989832 565939 74.19 2004 – 2021 18 Mt. Lemmon Survey
3 691 12343402 534272 23.10 1984 – 2021 38 Steward Observatory, Kitt Peak-Spacewatch
4 F52 7794424 469341 16.61 2014 – 2021 8 Pan-STARRS 2, Haleakala
5 703 30170098 440723 68.46 1998 – 2021 24 Catalina Sky Survey
6 D29 8379452 428540 19.55 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
7 704 32652544 358934 90.97 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
8 G45 13907514 337171 41.25 2011 – 2017 7 Space Surveillance Telescope, Atom Site
9 I41 11353942 326054 34.82 2002 – 2021 20 Palomar Mountain--ZTF
10 644 3849647 294531 13.07 1990 – 2010 21 Palomar Mountain/NEAT
11 699 5350232 258512 20.70 1998 – 2008 11 Lowell Observatory-LONEOS
12 T08 16698765 251569 66.38 2014 – 2021 8 ATLAS-MLO, Mauna Loa
13 T05 16054568 246120 65.23 2015 – 2021 7 ATLAS-HKO, Haleakala
14 J43 2147125 220522 9.74 2007 – 2021 15 Oukaimeden Observatory, Marrakech
15 E12 2220943 167968 13.22 2003 – 2013 11 Siding Spring Survey
Sum 2118 266099864 567132 469.20 1801 – 2021 221 2118 names

NUMOBS - Observations of numbered objects

Sorted by observations per object

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

Part of observations per object of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 874 4420 2 2210.00 1995 – 2013 19 Observatorio do Pico dos Dias, Itajuba
2 O44 453 2 226.50 2012 – 2013 2 Lijiang Station, Yunnan Observatories
3 C40 12633 64 197.39 2010 – 2021 12 Kuban State University Astrophysical Observatory
4 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
5 217 367 2 183.50 2021 – 2021 1 Assah
6 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 C57 601735 3940 152.72 2018 – 2021 4 TESS
9 Y28 2965 21 141.19 2011 – 2016 6 OASI, Nova Itacuruba
10 O49 242 2 121.00 2019 – 2019 1 Purple Mountain Observatory, Yaoan Station
11 C55 355 3 118.33 2016 – 2016 1 Kepler
12 248 5641 48 117.52 1989 – 1993 5 Hipparcos
13 778 1981 17 116.53 1935 – 1990 56 Allegheny Observatory, Pittsburgh
14 780 111 1 111.00 1931 – 1931 1 Leander McCormick Observatory, Charlottesville
15 193 1021 10 102.10 2013 – 2020 8 Sanglok
Sum 2118 266099864 567132 469.20 1801 – 2021 221 2118 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
8 548 499 63 7.92 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 8585 1800 4.77 1830 – 1957 128 Turku
14 961 4 1 4.00 1830 – 1830 1 City Observatory, Calton Hill, Edinburgh
15 503 134 16 8.38 1830 – 1989 160 Cambridge
Sum 2118 266099864 567132 469.20 1801 – 2021 221 2118 names

NUMOBS - Observations of numbered objects

Sorted by years span of observations

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

Year range of observations of top 15 stations at Minor Planet Center for NUMOBS class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 500 2880 56 51.43 1802 – 2021 220 Geocentric
2 541 165 33 5.00 1804 – 2000 197 Prague
3 528 164 18 9.11 1804 – 1983 180 Gottingen
4 084 23593 1067 22.11 1846 – 2013 168 Pulkovo
5 503 134 16 8.38 1830 – 1989 160 Cambridge
6 027 127 33 3.85 1804 – 1942 139 Milan
7 784 355 60 5.92 1866 – 2002 137 Stull Observatory, Alfred University
8 035 2862 71 40.31 1835 – 1970 136 Copenhagen
9 822 1651 226 7.31 1885 – 2020 136 Cordoba
10 062 8585 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 17187 2683 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 2118 266099864 567132 469.20 1801 – 2021 221 2118 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 55651873 2492061 22.33 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 53727508 1735145 30.96 2004 – 2021 18 Mt. Lemmon Survey
3 704 32851240 377007 87.14 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
4 703 31044111 616421 50.36 1998 – 2021 24 Catalina Sky Survey
5 T08 16870846 293433 57.49 2014 – 2021 8 ATLAS-MLO, Mauna Loa
6 T05 16216588 283091 57.28 2015 – 2021 7 ATLAS-HKO, Haleakala
7 691 14470793 963301 15.02 1984 – 2021 38 Steward Observatory, Kitt Peak-Spacewatch
8 G45 14170183 356507 39.75 2011 – 2017 7 Space Surveillance Telescope, Atom Site
9 I41 11939765 381176 31.32 2002 – 2021 20 Palomar Mountain--ZTF
10 F52 9718428 752987 12.91 2014 – 2021 8 Pan-STARRS 2, Haleakala
11 D29 8641089 490718 17.61 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
12 699 5484737 295188 18.58 1998 – 2009 12 Lowell Observatory-LONEOS
13 644 4120227 357677 11.52 1990 – 2010 21 Palomar Mountain/NEAT
14 C51 3582034 195198 18.35 2010 – 2021 12 WISE
15 W84 2920396 219041 13.33 2012 – 2021 10 Cerro Tololo-DECam
Sum 2253 307384499 4059494 75.72 1661 – 2021 361 2253 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 55651873 2492061 22.33 2008 – 2021 14 Pan-STARRS 1, Haleakala
2 G96 53727508 1735145 30.96 2004 – 2021 18 Mt. Lemmon Survey
3 691 14470793 963301 15.02 1984 – 2021 38 Steward Observatory, Kitt Peak-Spacewatch
4 F52 9718428 752987 12.91 2014 – 2021 8 Pan-STARRS 2, Haleakala
5 703 31044111 616421 50.36 1998 – 2021 24 Catalina Sky Survey
6 D29 8641089 490718 17.61 2006 – 2021 16 Purple Mountain Observatory, XuYi Station
7 I41 11939765 381176 31.32 2002 – 2021 20 Palomar Mountain--ZTF
8 704 32851240 377007 87.14 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
9 644 4120227 357677 11.52 1990 – 2010 21 Palomar Mountain/NEAT
10 G45 14170183 356507 39.75 2011 – 2017 7 Space Surveillance Telescope, Atom Site
11 699 5484737 295188 18.58 1998 – 2009 12 Lowell Observatory-LONEOS
12 T08 16870846 293433 57.49 2014 – 2021 8 ATLAS-MLO, Mauna Loa
13 T05 16216588 283091 57.28 2015 – 2021 7 ATLAS-HKO, Haleakala
14 J43 2258854 240627 9.39 2007 – 2021 15 Oukaimeden Observatory, Marrakech
15 291 947616 219777 4.31 1992 – 2021 30 LPL/Spacewatch II
Sum 2253 307384499 4059494 75.72 1661 – 2021 361 2253 names

ALL - Observations of all objects together

Sorted by observations per object

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

Part of observations per object of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 874 4857 12 404.75 1983 – 2013 31 Observatorio do Pico dos Dias, Itajuba
2 C40 25118 101 248.69 2010 – 2021 12 Kuban State University Astrophysical Observatory
3 Z42 572 3 190.67 2017 – 2017 1 Rushay Farm Observatory, Sturminster Newton
4 217 715 4 178.75 1984 – 2021 38 Assah
5 W78 331 2 165.50 2017 – 2018 2 Clay Telescope, Harvard University
6 L98 5201 32 162.53 2017 – 2018 2 La Sagra Observatory, Puebla de Don Fadrique
7 C57 603099 4011 150.36 2018 – 2021 4 TESS
8 G39 5036 42 119.90 2012 – 2021 10 ROAD, San Pedro de Atacama
9 248 5641 48 117.52 1989 – 1993 5 Hipparcos
10 778 1995 18 110.83 1910 – 1990 81 Allegheny Observatory, Pittsburgh
11 O44 471 5 94.20 2012 – 2017 6 Lijiang Station, Yunnan Observatories
12 A46 9181 98 93.68 2002 – 2006 5 Lelekovice
13 C55 371 4 92.75 2015 – 2016 2 Kepler
14 708 355 4 88.75 1900 – 1911 12 Chamberlin Observatory, Denver
15 704 32851240 377007 87.14 1979 – 2013 35 Lincoln Laboratory ETS, New Mexico
Sum 2253 307384499 4059494 75.72 1661 – 2021 361 2253 names

ALL - Observations of all objects together

Sorted by first year of observation

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

First year of observation of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 A51 35 1 35.00 1661 – 1661 1 Danzig
2 324 22 5 4.40 1737 – 1985 249 Peking Observatory, Shaho Station
3 535 52 7 7.43 1801 – 1903 103 Palermo
4 500 3118 101 30.87 1802 – 2021 220 Geocentric
5 541 206 40 5.15 1804 – 2017 214 Prague
6 528 243 28 8.68 1804 – 1986 183 Gottingen
7 027 166 39 4.26 1804 – 1942 139 Milan
8 283 4 1 4.00 1804 – 1804 1 Bremen
9 007 660 135 4.89 1819 – 1950 132 Paris
10 281 2 1 2.00 1819 – 1819 1 Bologna
11 058 547 79 6.92 1820 – 1939 120 Kaliningrad
12 548 575 73 7.88 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 2253 307384499 4059494 75.72 1661 – 2021 361 2253 names

ALL - Observations of all objects together

Sorted by years span of observations

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

Year range of observations of top 15 stations at Minor Planet Center for ALL class
Rank Station Observations Objects Observation per object Years of observation Years Station name
No. Code Number Number   Range span  
1 324 22 5 4.40 1737 – 1985 249 Peking Observatory, Shaho Station
2 500 3118 101 30.87 1802 – 2021 220 Geocentric
3 541 206 40 5.15 1804 – 2017 214 Prague
4 528 243 28 8.68 1804 – 1986 183 Gottingen
5 084 27105 1231 22.02 1846 – 2013 168 Pulkovo
6 503 357 57 6.26 1830 – 1993 164 Cambridge
7 189 258 48 5.38 1861 – 2019 159 Geneva (before 1967)
8 051 1080 45 24.00 1836 – 1987 152 Royal Observatory, Cape of Good Hope
9 075 841 275 3.06 1835 – 1985 151 Tartu
10 995 124 14 8.86 1850 – 1997 148 Durham
11 784 515 89 5.79 1866 – 2012 147 Stull Observatory, Alfred University
12 062 8795 1853 4.75 1830 – 1973 144 Turku
13 524 49 7 7.00 1827 – 1969 143 Mannheim
14 027 166 39 4.26 1804 – 1942 139 Milan
15 089 19827 733 27.05 1882 – 2020 139 Nikolaev
Sum 2253 307384499 4059494 75.72 1661 – 2021 361 2253 names