Welcome to MPEC Watch!

Note: This site is still under active development.

MPEC Watch provides various statistical metrics and plots derived from Minor Planet Center's Minor Planet Electronic Circular service. This website is created and maintained by Quanzhi Ye and Taegon Hibbitts. Tables and plots are automatically updated at midnight US Eastern Time.

Last update: UTC 2023-03-20 04:03:52

At a glance

Year Total MPECs Editorial Discovery P/R/FU DOU List Update Retraction Other
1. P/R/FU - precovery/recovery/follow-up.
2. DOU - Daily Orbit Update.
2023 695 0 508 109 78 0 0 0
2022 4229 1 3250 615 358 0 0 5
2021 4477 3 3339 761 366 0 0 8
2020 4019 0 3160 474 367 0 0 18
2019 3728 0 2582 777 360 0 1 8
2018 2790 0 1967 453 362 0 3 5
2017 3000 0 2197 438 362 0 0 3
2016 3198 0 2286 547 363 0 1 1
2015 2486 1 1660 457 364 0 4 0
2014 2170 1 1447 360 361 0 1 0
2013 1797 1 1089 352 354 0 0 1
2012 1729 1 1043 319 361 0 3 2
2011 1629 1 919 297 361 51 0 0
2010 2027 1 967 631 361 65 1 1
2009 1899 1 829 629 365 72 0 3
2008 1883 1 858 590 366 66 0 2
2007 1747 1 669 628 362 87 0 0
2006 1698 2 713 554 357 70 0 2
2005 1708 0 686 594 358 70 0 0
2004 1659 1 581 634 361 81 0 1
2003 1618 1 512 682 358 65 0 0
2002 1616 6 549 629 348 84 0 0
2001 1303 3 515 368 331 84 0 2
2000 1134 0 418 354 290 70 0 2
1999 898 2 323 176 324 73 0 0
1998 742 1 270 85 339 46 0 1
1997 301 1 91 145 16 48 0 0
1996 207 0 61 94 0 52 0 0
1995 178 2 66 69 0 41 0 0
1994 180 0 65 97 0 16 0 2
1993 56 2 20 30 0 1 0 3

Top MPEC Contributors

Last 1 year (2022-03-20 to 2023-03-20)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 1944
2 G96 Mt. Lemmon Survey 1626
3 F52 Pan-STARRS 2, Haleakala 1599
4 H21 Astronomical Research Observatory, Westfield 1221
5 807 Cerro Tololo Observatory, La Serena 1139
6 F51 Pan-STARRS 1, Haleakala 1071
7 L01 Visnjan Observatory, Tican 916
8 033 Karl Schwarzschild Observatory, Tautenburg 699
9 I93 St Pardon de Conques 570
10 J95 Great Shefford 545

Last 5 years (2018-03-21 to 2023-03-20)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 9210
2 G96 Mt. Lemmon Survey 8315
3 F51 Pan-STARRS 1, Haleakala 8124
4 L01 Visnjan Observatory, Tican 5959
5 H21 Astronomical Research Observatory, Westfield 5493
6 F52 Pan-STARRS 2, Haleakala 5216
7 807 Cerro Tololo Observatory, La Serena 3657
8 033 Karl Schwarzschild Observatory, Tautenburg 3333
9 J95 Great Shefford 2864
10 703 Catalina Sky Survey 2492

All time (since 1993-09-19)

# Observatory Total MPECs
1 G96 Mt. Lemmon Survey 18181
2 F51 Pan-STARRS 1, Haleakala 15752
3 I52 Steward Observatory, Mt. Lemmon Station 11817
4 H21 Astronomical Research Observatory, Westfield 11721
5 291 LPL/Spacewatch II 10145
6 703 Catalina Sky Survey 9242
7 J95 Great Shefford 8672
8 568 Maunakea 7862
9 807 Cerro Tololo Observatory, La Serena 7418
10 704 Lincoln Laboratory ETS, New Mexico 7016

Top MPEC-ed Discoverers

Last 1 year (2022-03-20 to 2023-03-20)

# Observatory Total MPECs
1 G96 Mt. Lemmon Survey 1018
2 F52 Pan-STARRS 2, Haleakala 787
3 F51 Pan-STARRS 1, Haleakala 333
4 V00 Kitt Peak-Bok 196
5 703 Catalina Sky Survey 127
6 K88 GINOP-KHK, Piszkesteto 76
7 W94 MAP, San Pedro de Atacama 65
8 T08 ATLAS-MLO, Mauna Loa 57
9 M22 ATLAS South Africa, Sutherland 39
10 T05 ATLAS-HKO, Haleakala 30

Last 5 years (2018-03-21 to 2023-03-20)

# Observatory Total MPECs
1 G96 Mt. Lemmon Survey 5576
2 F51 Pan-STARRS 1, Haleakala 3646
3 F52 Pan-STARRS 2, Haleakala 1916
4 703 Catalina Sky Survey 763
5 T08 ATLAS-MLO, Mauna Loa 438
6 V00 Kitt Peak-Bok 405
7 T05 ATLAS-HKO, Haleakala 316
8 I41 Palomar Mountain--ZTF 261
9 568 Maunakea 162
10 W94 MAP, San Pedro de Atacama 141

All time (since 1993-09-19)

# Observatory Total MPECs
1 G96 Mt. Lemmon Survey 10816
2 F51 Pan-STARRS 1, Haleakala 8115
3 703 Catalina Sky Survey 3497
4 704 Lincoln Laboratory ETS, New Mexico 2641
5 F52 Pan-STARRS 2, Haleakala 1922
6 691 Steward Observatory, Kitt Peak-Spacewatch 893
7 568 Maunakea 675
8 E12 Siding Spring Survey 506
9 T08 ATLAS-MLO, Mauna Loa 505
10 C51 WISE 414

Top MPEC-ed Follow-up Observatories

Last 1 year (2022-03-20 to 2023-03-20)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 1580
2 H21 Astronomical Research Observatory, Westfield 1003
3 L01 Visnjan Observatory, Tican 861
4 807 Cerro Tololo Observatory, La Serena 845
5 033 Karl Schwarzschild Observatory, Tautenburg 556
6 I93 St Pardon de Conques 520
7 568 Maunakea 426
8 958 Observatoire de Dax 404
9 204 Schiaparelli Observatory 403
10 J95 Great Shefford 388

Last 5 years (2018-03-21 to 2023-03-20)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 7609
2 L01 Visnjan Observatory, Tican 5492
3 H21 Astronomical Research Observatory, Westfield 4326
4 033 Karl Schwarzschild Observatory, Tautenburg 2815
5 807 Cerro Tololo Observatory, La Serena 2563
6 J95 Great Shefford 2129
7 I93 St Pardon de Conques 1855
8 568 Maunakea 1803
9 F51 Pan-STARRS 1, Haleakala 1774
10 F52 Pan-STARRS 2, Haleakala 1633

All time (since 1993-09-19)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 9745
2 H21 Astronomical Research Observatory, Westfield 7976
3 L01 Visnjan Observatory, Tican 5607
4 J95 Great Shefford 5563
5 291 LPL/Spacewatch II 5488
6 H01 Magdalena Ridge Observatory, Socorro 5071
7 807 Cerro Tololo Observatory, La Serena 4346
8 568 Maunakea 3665
9 033 Karl Schwarzschild Observatory, Tautenburg 3466
10 H36 Sandlot Observatory, Scranton 3310

Top MPEC-ed First Follow-up Observatories

Last 1 year (2022-03-20 to 2023-03-20)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 994
2 807 Cerro Tololo Observatory, La Serena 215
3 568 Maunakea 157
4 F51 Pan-STARRS 1, Haleakala 140
5 L01 Visnjan Observatory, Tican 124
6 F52 Pan-STARRS 2, Haleakala 122
7 H21 Astronomical Research Observatory, Westfield 111
8 291 LPL/Spacewatch II 81
9 V06 Catalina Sky Survey-Kuiper 81
10 033 Karl Schwarzschild Observatory, Tautenburg 76

Last 5 years (2018-03-21 to 2023-03-20)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 4315
2 L01 Visnjan Observatory, Tican 986
3 807 Cerro Tololo Observatory, La Serena 852
4 H01 Magdalena Ridge Observatory, Socorro 814
5 568 Maunakea 772
6 V06 Catalina Sky Survey-Kuiper 643
7 H21 Astronomical Research Observatory, Westfield 628
8 033 Karl Schwarzschild Observatory, Tautenburg 548
9 F51 Pan-STARRS 1, Haleakala 467
10 F52 Pan-STARRS 2, Haleakala 425

All time (since 1993-09-19)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 5213
2 H01 Magdalena Ridge Observatory, Socorro 2492
3 291 LPL/Spacewatch II 2270
4 568 Maunakea 1688
5 H21 Astronomical Research Observatory, Westfield 1632
6 807 Cerro Tololo Observatory, La Serena 1448
7 J95 Great Shefford 1312
8 L01 Visnjan Observatory, Tican 988
9 033 Karl Schwarzschild Observatory, Tautenburg 712
10 G96 Mt. Lemmon Survey 707

Top MPEC-ed Precoverers

Last 1 year (2022-03-20 to 2023-03-20)

# Observatory Total MPECs
1 F52 Pan-STARRS 2, Haleakala 139
2 F51 Pan-STARRS 1, Haleakala 96
3 G96 Mt. Lemmon Survey 82
4 703 Catalina Sky Survey 54
5 I41 Palomar Mountain--ZTF 37
6 K88 GINOP-KHK, Piszkesteto 8
7 W68 ATLAS Chile, Rio Hurtado 8
8 568 Maunakea 8
9 V00 Kitt Peak-Bok 6
10 W84 Cerro Tololo-DECam 4

Last 5 years (2018-03-21 to 2023-03-20)

# Observatory Total MPECs
1 F51 Pan-STARRS 1, Haleakala 915
2 F52 Pan-STARRS 2, Haleakala 819
3 G96 Mt. Lemmon Survey 401
4 703 Catalina Sky Survey 199
5 I41 Palomar Mountain--ZTF 71
6 K88 GINOP-KHK, Piszkesteto 27
7 568 Maunakea 15
8 T08 ATLAS-MLO, Mauna Loa 13
9 W84 Cerro Tololo-DECam 12
10 T05 ATLAS-HKO, Haleakala 12

All time (since 1993-09-19)

# Observatory Total MPECs
1 F51 Pan-STARRS 1, Haleakala 1201
2 F52 Pan-STARRS 2, Haleakala 824
3 G96 Mt. Lemmon Survey 459
4 703 Catalina Sky Survey 247
5 704 Lincoln Laboratory ETS, New Mexico 75
6 I41 Palomar Mountain--ZTF 73
7 691 Steward Observatory, Kitt Peak-Spacewatch 47
8 699 Lowell Observatory-LONEOS 28
9 K88 GINOP-KHK, Piszkesteto 27
10 644 Palomar Mountain/NEAT 22