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 2023-09-24 04:01:11

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 2767 2 2052 443 267 0 3 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 (2022-09-24 to 2023-09-24)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 1915
2 G96 Mt. Lemmon Survey 1691
3 F51 Pan-STARRS 1, Haleakala 1600
4 F52 Pan-STARRS 2, Haleakala 1540
5 H21 Astronomical Research Observatory, Westfield 1325
6 L01 Visnjan Observatory, Tican 1079
7 807 Cerro Tololo Observatory, La Serena 1022
8 033 Karl Schwarzschild Observatory, Tautenburg 755
9 C95 SATINO Remote Observatory, Haute Provence 561
10 703 Catalina Sky Survey 539

Last 5 years (2018-09-25 to 2023-09-24)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 9271
2 F51 Pan-STARRS 1, Haleakala 8551
3 G96 Mt. Lemmon Survey 8487
4 L01 Visnjan Observatory, Tican 6026
5 F52 Pan-STARRS 2, Haleakala 5988
6 H21 Astronomical Research Observatory, Westfield 5772
7 807 Cerro Tololo Observatory, La Serena 3731
8 033 Karl Schwarzschild Observatory, Tautenburg 3575
9 J95 Great Shefford 2857
10 703 Catalina Sky Survey 2492

All time (since 1993-09-19)

# Observatory Total MPECs
1 G96 Mt. Lemmon Survey 18879
2 F51 Pan-STARRS 1, Haleakala 16665
3 I52 Steward Observatory, Mt. Lemmon Station 12572
4 H21 Astronomical Research Observatory, Westfield 12370
5 291 LPL/Spacewatch II 10325
6 703 Catalina Sky Survey 9490
7 J95 Great Shefford 8933
8 568 Maunakea 7934
9 807 Cerro Tololo Observatory, La Serena 7836
10 704 Lincoln Laboratory ETS, New Mexico 7019

Top MPEC-ed Discoverers

Last 1 year (2022-09-24 to 2023-09-24)

# Observatory Total MPECs
1 G96 Mt. Lemmon Survey 1071
2 F52 Pan-STARRS 2, Haleakala 618
3 F51 Pan-STARRS 1, Haleakala 563
4 V00 Kitt Peak-Bok 192
5 703 Catalina Sky Survey 144
6 K88 GINOP-KHK, Piszkesteto 87
7 W94 MAP, San Pedro de Atacama 84
8 568 Maunakea 66
9 M22 ATLAS South Africa, Sutherland 49
10 L51 MARGO, Nauchnyi 46

Last 5 years (2018-09-25 to 2023-09-24)

# Observatory Total MPECs
1 G96 Mt. Lemmon Survey 5603
2 F51 Pan-STARRS 1, Haleakala 3721
3 F52 Pan-STARRS 2, Haleakala 2230
4 703 Catalina Sky Survey 720
5 V00 Kitt Peak-Bok 457
6 T08 ATLAS-MLO, Mauna Loa 409
7 T05 ATLAS-HKO, Haleakala 300
8 I41 Palomar Mountain--ZTF 250
9 W94 MAP, San Pedro de Atacama 195
10 568 Maunakea 192

All time (since 1993-09-19)

# Observatory Total MPECs
1 G96 Mt. Lemmon Survey 11205
2 F51 Pan-STARRS 1, Haleakala 8458
3 703 Catalina Sky Survey 3560
4 704 Lincoln Laboratory ETS, New Mexico 2642
5 F52 Pan-STARRS 2, Haleakala 2254
6 691 Steward Observatory, Kitt Peak-Spacewatch 893
7 568 Maunakea 734
8 E12 Siding Spring Survey 506
9 T08 ATLAS-MLO, Mauna Loa 506
10 V00 Kitt Peak-Bok 457

Top MPEC-ed Follow-up Observatories

Last 1 year (2022-09-24 to 2023-09-24)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 1574
2 H21 Astronomical Research Observatory, Westfield 1095
3 L01 Visnjan Observatory, Tican 1020
4 807 Cerro Tololo Observatory, La Serena 750
5 033 Karl Schwarzschild Observatory, Tautenburg 606
6 F51 Pan-STARRS 1, Haleakala 493
7 F52 Pan-STARRS 2, Haleakala 433
8 I93 St Pardon de Conques 420
9 204 Schiaparelli Observatory 389
10 J95 Great Shefford 383

Last 5 years (2018-09-25 to 2023-09-24)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 7652
2 L01 Visnjan Observatory, Tican 5558
3 H21 Astronomical Research Observatory, Westfield 4615
4 033 Karl Schwarzschild Observatory, Tautenburg 3008
5 807 Cerro Tololo Observatory, La Serena 2657
6 J95 Great Shefford 2114
7 I93 St Pardon de Conques 2066
8 F51 Pan-STARRS 1, Haleakala 1946
9 F52 Pan-STARRS 2, Haleakala 1850
10 568 Maunakea 1712

All time (since 1993-09-19)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 10343
2 H21 Astronomical Research Observatory, Westfield 8502
3 L01 Visnjan Observatory, Tican 6024
4 J95 Great Shefford 5747
5 291 LPL/Spacewatch II 5574
6 H01 Magdalena Ridge Observatory, Socorro 5275
7 807 Cerro Tololo Observatory, La Serena 4657
8 033 Karl Schwarzschild Observatory, Tautenburg 3804
9 568 Maunakea 3670
10 H36 Sandlot Observatory, Scranton 3446

Top MPEC-ed First Follow-up Observatories

Last 1 year (2022-09-24 to 2023-09-24)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 941
2 F51 Pan-STARRS 1, Haleakala 217
3 807 Cerro Tololo Observatory, La Serena 209
4 F52 Pan-STARRS 2, Haleakala 173
5 L01 Visnjan Observatory, Tican 153
6 H01 Magdalena Ridge Observatory, Socorro 134
7 T14 Canada-France-Hawaii Telescope, Maunakea 128
8 033 Karl Schwarzschild Observatory, Tautenburg 107
9 V06 Catalina Sky Survey-Kuiper 104
10 H21 Astronomical Research Observatory, Westfield 92

Last 5 years (2018-09-25 to 2023-09-24)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 4310
2 L01 Visnjan Observatory, Tican 1002
3 807 Cerro Tololo Observatory, La Serena 873
4 H01 Magdalena Ridge Observatory, Socorro 826
5 568 Maunakea 742
6 V06 Catalina Sky Survey-Kuiper 671
7 033 Karl Schwarzschild Observatory, Tautenburg 611
8 H21 Astronomical Research Observatory, Westfield 607
9 F51 Pan-STARRS 1, Haleakala 577
10 F52 Pan-STARRS 2, Haleakala 514

All time (since 1993-09-19)

# Observatory Total MPECs
1 I52 Steward Observatory, Mt. Lemmon Station 5507
2 H01 Magdalena Ridge Observatory, Socorro 2590
3 291 LPL/Spacewatch II 2296
4 568 Maunakea 1688
5 H21 Astronomical Research Observatory, Westfield 1666
6 807 Cerro Tololo Observatory, La Serena 1550
7 J95 Great Shefford 1333
8 L01 Visnjan Observatory, Tican 1058
9 033 Karl Schwarzschild Observatory, Tautenburg 785
10 G96 Mt. Lemmon Survey 734

Top MPEC-ed Precoverers

Last 1 year (2022-09-24 to 2023-09-24)

# Observatory Total MPECs
1 F51 Pan-STARRS 1, Haleakala 164
2 F52 Pan-STARRS 2, Haleakala 157
3 G96 Mt. Lemmon Survey 108
4 703 Catalina Sky Survey 60
5 I41 Palomar Mountain--ZTF 43
6 K88 GINOP-KHK, Piszkesteto 10
7 W68 ATLAS Chile, Rio Hurtado 8
8 568 Maunakea 8
9 T05 ATLAS-HKO, Haleakala 7
10 W84 Cerro Tololo-DECam 7

Last 5 years (2018-09-25 to 2023-09-24)

# Observatory Total MPECs
1 F51 Pan-STARRS 1, Haleakala 954
2 F52 Pan-STARRS 2, Haleakala 898
3 G96 Mt. Lemmon Survey 461
4 703 Catalina Sky Survey 230
5 I41 Palomar Mountain--ZTF 72
6 K88 GINOP-KHK, Piszkesteto 30
7 W84 Cerro Tololo-DECam 17
8 T05 ATLAS-HKO, Haleakala 16
9 568 Maunakea 13
10 T08 ATLAS-MLO, Mauna Loa 13

All time (since 1993-09-19)

# Observatory Total MPECs
1 F51 Pan-STARRS 1, Haleakala 1286
2 F52 Pan-STARRS 2, Haleakala 909
3 G96 Mt. Lemmon Survey 523
4 703 Catalina Sky Survey 278
5 I41 Palomar Mountain--ZTF 82
6 704 Lincoln Laboratory ETS, New Mexico 75
7 691 Steward Observatory, Kitt Peak-Spacewatch 48
8 K88 GINOP-KHK, Piszkesteto 30
9 699 Lowell Observatory-LONEOS 28
10 644 Palomar Mountain/NEAT 22