N88 Xingming Observatory #3, Nanshan
Graphs
Yearly Breakdown of MPEC Types
Term definition:Editorial - Editorial MPECs associated with this station.
Discovery - MPECs associated with discovery made by this station.
OrbitUpdate - MPECs associated with orbit updates involving observations made by this station. Typically, these are recoveries of single-opposition objects.
DOU - Daily Orbit Update MPECs involving observations made by this station.
ListUpdate - MPECs associated with list updates involving observations made by this station. This category has largely been retired since 2012.
Retraction - Retracted MPECs involving observations made by this station.
Followup - MPECs associated with follow-up observations made by this station to an object discovered elsewhere.
FirstFollowup - MPECs associated with follow-up observations made by this station to an object discovered elsewhere, with this station being the first station to follow-up.
Other - MPECs that do not fit into categories listed above and involve observations made by this station.
Yearly Breakdown of Discovery Object Types
Yearly Breakdown of Orbit Update Object Types
Breakdown by Observers
Breakdown by Measurers
Breakdown by Facilities
Breakdown by Objects
Annual Breakdown
Weekly Breakdown
Hourly Breakdown
Tables
Yearly Breakdown of MPEC Types
| Year | Total MPECs | Editorial | Discovery | P/R/FU | DOU | List Update | Retraction | Other | Follow-Up | First Follow-Up |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 11 | 0 | 0 | 4 | 6 | 0 | 0 | 0 | 1 | 0 |
| 2024 | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 0 |
| 2023 | 9 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 5 | 1 |
| 2022 | 16 | 0 | 0 | 3 | 2 | 0 | 0 | 0 | 8 | 3 |
| 2021 | 133 | 0 | 0 | 3 | 18 | 0 | 0 | 0 | 97 | 15 |
| 2020 | 148 | 0 | 0 | 5 | 12 | 0 | 0 | 0 | 108 | 23 |
| 2019 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2018 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2017 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2016 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2014 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2013 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2012 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2011 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2010 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2009 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2008 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2007 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2006 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2005 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2004 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2003 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2002 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2001 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1999 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1998 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1997 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1996 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1995 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1994 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1993 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
List of Individual MPECs
| Index | Name | Date/Time | Discoverer | First-responding Confirmer | Object Type | Search Archival Image |
|---|---|---|---|---|---|---|
| 1 | MPEC 2020-G69 2020 GY1 | 2020-04-07 00:43:00 | NEA (H>22) | CATCH | 2 | MPEC 2020-G71 2020 FB7 | 2020-04-07 07:39:00 | NEA (H>22) | CATCH | 3 | MPEC 2020-H212 2020 HS7 | 2020-04-28 12:47:00 | ✓ | NEA (H>22) | CATCH | 4 | MPEC 2020-J16 COMET C/2019 Y4 (ATLAS) | 2020-05-01 22:19:00 | Comet | CATCH | 5 | MPEC 2020-J46 2020 JR | 2020-05-07 14:50:00 | NEA (H>22) | CATCH | 6 | MPEC 2020-J63 2020 JB1 | 2020-05-14 13:26:00 | ✓ | NEA (H>22) | CATCH | 7 | MPEC 2020-J64 2020 JC1 | 2020-05-14 13:28:00 | ✓ | NEA (H>22) | CATCH | 8 | MPEC 2020-J70 2020 JF1 | 2020-05-14 22:20:00 | NEA (H>22) | CATCH | 9 | MPEC 2020-J74 2020 JK1 | 2020-05-15 00:47:00 | NEA (H>22) | CATCH | 10 | MPEC 2020-J75 2020 JL1 | 2020-05-15 00:49:00 | NEA (H>22) | CATCH | 11 | MPEC 2020-J86 2020 JT1 | 2020-05-15 21:13:00 | NEA (H>22) | CATCH | 12 | MPEC 2020-K119 2020 KU2 | 2020-05-22 06:08:00 | NEA (H>22) | CATCH | 13 | MPEC 2020-K131 Comet C/2019 Y4 (ATLAS) | 2020-05-22 20:52:00 | Comet | CATCH | 14 | MPEC 2020-K133 2020 KJ3 | 2020-05-22 23:15:00 | NEA (H>22) | CATCH | 15 | MPEC 2020-K155 COMET C/2020 K2 (PANSTARRS) | 2020-05-24 20:54:00 | Comet | CATCH | 16 | MPEC 2020-K159 COMET C/2020 K3 (Leonard) | 2020-05-25 03:51:00 | Comet | CATCH | 17 | MPEC 2020-K166 2020 KJ4 | 2020-05-25 22:08:00 | NEA (H>22) | CATCH | 18 | MPEC 2020-K172 2020 KN4 | 2020-05-26 02:14:00 | NEA (18>H>22) | CATCH | 19 | MPEC 2020-K194 2020 KQ5 | 2020-05-27 06:33:00 | ✓ | NEA (18>H>22) | CATCH | 20 | MPEC 2020-K198 DAILY ORBIT UPDATE (2020 May 27) | 2020-05-27 12:06:00 | 21 | MPEC 2020-K226 2020 KV6 | 2020-05-30 15:41:00 | NEA (H>22) | CATCH | 22 | MPEC 2020-L10 2019 VS7 | 2020-06-03 11:27:00 | NEA (18>H>22) | CATCH | 23 | MPEC 2020-L34 2020 LC | 2020-06-08 21:31:00 | NEA (H>22) | CATCH | 24 | MPEC 2020-L35 2020 LD | 2020-06-09 06:09:00 | NEA (H>22) | CATCH | 25 | MPEC 2020-L37 2020 LE | 2020-06-09 16:50:00 | NEA (18>H>22) | CATCH | 26 | MPEC 2020-L62 2020 LV | 2020-06-15 22:27:00 | NEA (H>22) | CATCH | 27 | MPEC 2020-M06 2020 LD1 | 2020-06-16 22:12:00 | NEA (H>22) | CATCH | 28 | MPEC 2020-M19 2020 LM1 | 2020-06-18 11:29:00 | ✓ | PHAg18 | CATCH | 29 | MPEC 2020-M62 2020 MZ | 2020-06-21 22:36:00 | PHAg18 | CATCH | 30 | MPEC 2020-M67 DAILY ORBIT UPDATE (2020 June 22) | 2020-06-22 12:02:00 | 31 | MPEC 2020-M75 2020 MP1 | 2020-06-23 00:25:00 | ✓ | NEA (H>22) | CATCH | 32 | MPEC 2020-M78 2020 MS1 | 2020-06-23 03:20:00 | ✓ | NEA (H>22) | CATCH | 33 | MPEC 2020-M82 DAILY ORBIT UPDATE (2020 June 23) | 2020-06-23 12:03:00 | 34 | MPEC 2020-M126 2020 MH3 | 2020-06-28 01:16:00 | ✓ | NEA (H>22) | CATCH | 35 | MPEC 2020-N18 2020 NA | 2020-07-05 19:05:00 | NEA (18>H>22) | CATCH | 36 | MPEC 2020-N35 2020 NE | 2020-07-10 19:02:00 | ✓ | NEA (18>H>22) | CATCH | 37 | MPEC 2020-N41 2020 NJ | 2020-07-11 20:14:00 | ✓ | NEA (H>22) | CATCH | 38 | MPEC 2020-O21 2020 OD | 2020-07-18 19:17:00 | ✓ | NEA (H>22) | CATCH | 39 | MPEC 2020-O24 2020 NM1 | 2020-07-19 00:09:00 | NEA (18>H>22) | CATCH | 40 | MPEC 2020-O66 2020 OV1 | 2020-07-22 03:19:00 | NEA (18>H>22) | CATCH | 41 | MPEC 2020-O71 DAILY ORBIT UPDATE (2020 July 23) | 2020-07-23 12:20:00 | 42 | MPEC 2020-O113 DAILY ORBIT UPDATE (2020 July 26) | 2020-07-26 12:24:00 | 43 | MPEC 2020-O122 2020 OR4 | 2020-07-26 22:31:00 | NEA (H>22) | CATCH | 44 | MPEC 2020-O124 2020 OT4 | 2020-07-27 01:27:00 | ✓ | NEA (H>22) | CATCH | 45 | MPEC 2020-O125 2020 OU4 | 2020-07-27 01:29:00 | ✓ | NEA (H>22) | CATCH | 46 | MPEC 2020-O175 2020 OA6 | 2020-07-30 23:25:00 | NEA (H>22) | CATCH | 47 | MPEC 2020-P05 2020 OT6 | 2020-08-02 01:10:00 | PHAg18 | CATCH | 48 | MPEC 2020-P08 2020 OV6 | 2020-08-02 09:29:00 | NEA (18>H>22) | CATCH | 49 | MPEC 2020-P12 2020 PA | 2020-08-02 23:19:00 | NEA (H>22) | CATCH | 50 | MPEC 2020-P13 2018 GO4 | 2020-08-02 23:39:00 | NEA (H>22) | CATCH | 51 | MPEC 2020-P19 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2020-08-04 23:06:00 | Comet | CATCH | 52 | MPEC 2020-P27 2020 PF | 2020-08-08 11:18:00 | NEA (H>22) | CATCH | 53 | MPEC 2020-P31 2020 PG | 2020-08-08 22:40:00 | ✓ | NEA (H>22) | CATCH | 54 | MPEC 2020-P33 2020 PH | 2020-08-09 06:05:00 | NEA (18>H>22) | CATCH | 55 | MPEC 2020-P36 2020 PK | 2020-08-09 21:53:00 | NEA (18>H>22) | CATCH | 56 | MPEC 2020-P44 2020 PT | 2020-08-11 22:18:00 | NEA (H>22) | CATCH | 57 | MPEC 2020-P47 2020 PV | 2020-08-11 23:32:00 | NEA (H>22) | CATCH | 58 | MPEC 2020-P50 2009 PQ1 | 2020-08-12 00:36:00 | NEA (H>22) | CATCH | 59 | MPEC 2020-P63 2020 PK1 | 2020-08-12 22:39:00 | NEA (H>22) | CATCH | 60 | MPEC 2020-P66 2020 PN1 | 2020-08-13 10:41:00 | ✓ | NEA (H>22) | CATCH | 61 | MPEC 2020-P69 DAILY ORBIT UPDATE (2020 August 13) | 2020-08-13 12:03:00 | 62 | MPEC 2020-Q23 2020 PM4 | 2020-08-16 18:10:00 | PHAg18 | CATCH | 63 | MPEC 2020-Q30 2020 PV4 | 2020-08-17 00:06:00 | ✓ | NEA (H>22) | CATCH | 64 | MPEC 2020-Q44 2020 QC | 2020-08-17 11:47:00 | ✓ | PHAg18 | CATCH | 65 | MPEC 2020-Q55 2020 QH | 2020-08-18 03:24:00 | PHAg18 | CATCH | 66 | MPEC 2020-Q56 2020 QJ | 2020-08-18 03:26:00 | NEA (H>22) | CATCH | 67 | MPEC 2020-Q65 2020 QQ | 2020-08-18 11:59:00 | ✓ | PHAg18 | CATCH | 68 | MPEC 2020-Q81 2020 QW | 2020-08-19 01:06:00 | ✓ | NEA (H>22) | CATCH | 69 | MPEC 2020-Q162 DAILY ORBIT UPDATE (2020 August 23) | 2020-08-23 12:14:00 | 70 | MPEC 2020-Q168 2020 QQ4 | 2020-08-23 22:25:00 | NEA (H>22) | CATCH | 71 | MPEC 2020-Q171 2020 QT4 | 2020-08-23 22:38:00 | NEA (H>22) | CATCH | 72 | MPEC 2020-Q175 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2020-08-24 17:36:00 | Comet | CATCH | 73 | MPEC 2020-Q197 2020 QS5 | 2020-08-26 02:22:00 | NEA (H>22) | CATCH | 74 | MPEC 2020-Q212 2020 QJ6 | 2020-08-28 08:54:00 | NEA (H>22) | CATCH | 75 | MPEC 2020-R104 2020 RX2 | 2020-09-13 11:29:00 | ✓ | NEA (H>22) | CATCH | 76 | MPEC 2020-R112 2020 RF3 | 2020-09-13 19:28:00 | ✓ | NEA (H>22) | CATCH | 77 | MPEC 2020-S57 2020 SC | 2020-09-18 03:05:00 | NEA (H>22) | CATCH | 78 | MPEC 2020-S113 2020 SZ1 | 2020-09-20 11:47:00 | NEA (H>22) | CATCH | 79 | MPEC 2020-S114 2020 SA2 | 2020-09-20 11:51:00 | NEA (H>22) | CATCH | 80 | MPEC 2020-S116 DAILY ORBIT UPDATE (2020 September 20) | 2020-09-20 12:08:00 | 81 | MPEC 2020-S150 2020 SE3 | 2020-09-22 11:20:00 | PHAg18 | CATCH | 82 | MPEC 2020-U170 COMET C/2020 T2 (Palomar) | 2020-10-22 03:59:00 | Comet | CATCH | 83 | MPEC 2020-U256 DAILY ORBIT UPDATE (2020 October 28) | 2020-10-28 12:08:00 | 84 | MPEC 2020-U257 2020 UO6 | 2020-10-28 13:13:00 | NEA (H>22) | CATCH | 85 | MPEC 2020-U259 2020 UQ6 | 2020-10-28 19:39:00 | NEA (H>22) | CATCH | 86 | MPEC 2020-V07 2020 UW6 | 2020-11-03 06:00:00 | PHAg18 | CATCH | 87 | MPEC 2020-V27 2020 VO | 2020-11-06 03:42:00 | NEA (H>22) | CATCH | 88 | MPEC 2020-V42 2020 VA1 | 2020-11-07 22:25:00 | NEA (H>22) | CATCH | 89 | MPEC 2020-V65 2020 VN1 | 2020-11-10 22:45:00 | NEA (H>22) | CATCH | 90 | MPEC 2020-V67 2020 VP1 | 2020-11-10 23:29:00 | NEA (H>22) | CATCH | 91 | MPEC 2020-V70 DAILY ORBIT UPDATE (2020 November 11) | 2020-11-11 12:07:00 | 92 | MPEC 2020-V74 2020 VS1 | 2020-11-12 01:15:00 | NEA (H>22) | CATCH | 93 | MPEC 2020-V76 2020 VU1 | 2020-11-12 01:17:00 | NEA (H>22) | CATCH | 94 | MPEC 2020-V79 2020 VW1 | 2020-11-12 02:05:00 | NEA (H>22) | CATCH | 95 | MPEC 2020-V85 2020 VC2 | 2020-11-12 09:43:00 | NEA (H>22) | CATCH | 96 | MPEC 2020-V109 2020 VC3 | 2020-11-12 23:26:00 | NEA (H>22) | CATCH | 97 | MPEC 2020-V112 2020 VF3 | 2020-11-12 23:30:00 | NEA (18>H>22) | CATCH | 98 | MPEC 2020-V113 2020 VG3 | 2020-11-12 23:31:00 | NEA (H>22) | CATCH | 99 | MPEC 2020-V115 2020 VJ3 | 2020-11-12 23:34:00 | NEA (H>22) | CATCH | 100 | MPEC 2020-V135 2020 VE4 | 2020-11-13 20:44:00 | NEA (H>22) | CATCH | 101 | MPEC 2020-W92 2020 WE2 | 2020-11-21 00:12:00 | NEA (18>H>22) | CATCH | 102 | MPEC 2020-W94 2020 WG2 | 2020-11-21 00:24:00 | NEA (H>22) | CATCH | 103 | MPEC 2020-W114 2020 WZ2 | 2020-11-23 01:24:00 | NEA (H>22) | CATCH | 104 | MPEC 2020-W115 2020 WA3 | 2020-11-23 01:25:00 | NEA (H>22) | CATCH | 105 | MPEC 2020-W131 2020 WO3 | 2020-11-23 20:39:00 | NEA (H>22) | CATCH | 106 | MPEC 2020-W151 DAILY ORBIT UPDATE (2020 November 25) | 2020-11-25 12:08:00 | 107 | MPEC 2020-W155 2020 WP4 | 2020-11-25 19:30:00 | NEA (18>H>22) | CATCH | 108 | MPEC 2020-W156 2020 AV2 | 2020-11-25 20:42:00 | NEAl18 | CATCH | 109 | MPEC 2020-X16 2020 XD | 2020-12-05 19:51:00 | PHAg18 | CATCH | 110 | MPEC 2020-X22 2020 XH | 2020-12-05 23:14:00 | NEA (H>22) | CATCH | 111 | MPEC 2020-X87 2020 XN2 | 2020-12-09 17:09:00 | NEA (H>22) | CATCH | 112 | MPEC 2020-X88 2020 XO2 | 2020-12-09 17:11:00 | NEA (H>22) | CATCH | 113 | MPEC 2020-X90 2020 XQ2 | 2020-12-09 19:24:00 | NEA (H>22) | CATCH | 114 | MPEC 2020-X91 2015 XY169 | 2020-12-10 00:33:00 | NEA (H>22) | CATCH | 115 | MPEC 2020-X112 2020 XC3 | 2020-12-11 16:30:00 | NEA (H>22) | CATCH | 116 | MPEC 2020-X119 2020 XK3 | 2020-12-11 19:02:00 | NEA (18>H>22) | CATCH | 117 | MPEC 2020-X120 2020 XL3 | 2020-12-11 19:05:00 | PHAg18 | CATCH | 118 | MPEC 2020-X132 2020 XX3 | 2020-12-12 14:14:00 | ✓ | NEA (H>22) | CATCH | 119 | MPEC 2020-X154 2020 XV4 | 2020-12-14 00:33:00 | NEA (H>22) | CATCH | 120 | MPEC 2020-Y24 DAILY ORBIT UPDATE (2020 December 17) | 2020-12-17 12:27:00 | 121 | MPEC 2020-Y25 2020 YB | 2020-12-17 19:16:00 | NEA (H>22) | CATCH | 122 | MPEC 2020-Y31 2020 YF | 2020-12-17 23:30:00 | NEA (H>22) | CATCH | 123 | MPEC 2020-Y47 2020 YU | 2020-12-18 23:33:00 | NEA (H>22) | CATCH | 124 | MPEC 2020-Y49 2020 YW | 2020-12-19 02:29:00 | ✓ | NEA (H>22) | CATCH | 125 | MPEC 2020-Y155 2020 YA5 | 2020-12-30 01:53:00 | NEA (H>22) | CATCH | 126 | MPEC 2021-A14 DAILY ORBIT UPDATE (2021 January 4) | 2021-01-04 12:02:00 | 127 | MPEC 2021-A19 2021 AH | 2021-01-04 17:26:00 | NEA (H>22) | CATCH | 128 | MPEC 2021-A33 2021 AU | 2021-01-05 18:34:00 | NEA (H>22) | CATCH | 129 | MPEC 2021-A35 2021 AW | 2021-01-05 22:43:00 | NEA (H>22) | CATCH | 130 | MPEC 2021-A37 2021 AY | 2021-01-06 01:47:00 | NEA (H>22) | CATCH | 131 | MPEC 2021-A38 2021 AZ | 2021-01-06 01:48:00 | NEA (H>22) | CATCH | 132 | MPEC 2021-A48 2021 AK1 | 2021-01-06 13:46:00 | NEA (H>22) | CATCH | 133 | MPEC 2021-A55 2021 AQ1 | 2021-01-06 19:36:00 | NEA (H>22) | CATCH | 134 | MPEC 2021-A58 2021 AT1 | 2021-01-06 22:33:00 | NEA (H>22) | CATCH | 135 | MPEC 2021-A67 2021 AC2 | 2021-01-08 00:31:00 | NEA (H>22) | CATCH | 136 | MPEC 2021-A70 2021 AF2 | 2021-01-08 11:57:00 | ✓ | NEA (H>22) | CATCH | 137 | MPEC 2021-A71 DAILY ORBIT UPDATE (2021 January 8) | 2021-01-08 12:13:00 | 138 | MPEC 2021-A75 2021 AM2 | 2021-01-08 13:00:00 | NEA (H>22) | CATCH | 139 | MPEC 2021-A87 2018 AE12 | 2021-01-09 15:50:00 | NEA (H>22) | CATCH | 140 | MPEC 2021-A122 2021 AB4 | 2021-01-11 01:18:00 | NEA (H>22) | CATCH | 141 | MPEC 2021-A123 2021 AC4 | 2021-01-11 01:19:00 | NEA (H>22) | CATCH | 142 | MPEC 2021-B18 2021 BC | 2021-01-17 01:33:00 | ✓ | NEA (H>22) | CATCH | 143 | MPEC 2021-B40 2021 BO | 2021-01-18 00:18:00 | NEA (H>22) | CATCH | 144 | MPEC 2021-B41 2021 BP | 2021-01-18 02:15:00 | NEA (H>22) | CATCH | 145 | MPEC 2021-B42 2021 BQ | 2021-01-18 02:16:00 | NEA (H>22) | CATCH | 146 | MPEC 2021-B44 2021 BS | 2021-01-18 06:07:00 | NEA (H>22) | CATCH | 147 | MPEC 2021-B55 DAILY ORBIT UPDATE (2021 January 18) | 2021-01-18 12:23:00 | 148 | MPEC 2021-B58 2021 BB1 | 2021-01-18 18:43:00 | NEA (H>22) | CATCH | 149 | MPEC 2021-B63 2021 BJ1 | 2021-01-19 01:29:00 | NEA (H>22) | CATCH | 150 | MPEC 2021-B64 2021 BK1 | 2021-01-19 01:31:00 | NEA (H>22) | CATCH | 151 | MPEC 2021-B69 DAILY ORBIT UPDATE (2021 January 19) | 2021-01-19 12:02:00 | 152 | MPEC 2021-B71 2021 BQ1 | 2021-01-19 14:40:00 | NEA (H>22) | CATCH | 153 | MPEC 2021-C03 2021 BK3 | 2021-02-01 14:31:00 | NEA (H>22) | CATCH | 154 | MPEC 2021-C08 2021 CC | 2021-02-02 23:36:00 | NEA (H>22) | CATCH | 155 | MPEC 2021-C09 2021 BM3 | 2021-02-02 23:37:00 | PHAg18 | CATCH | 156 | MPEC 2021-C37 2021 CR | 2021-02-06 21:53:00 | NEA (H>22) | CATCH | 157 | MPEC 2021-C38 2021 CS | 2021-02-06 23:28:00 | NEA (H>22) | CATCH | 158 | MPEC 2021-C39 2021 CT | 2021-02-06 23:29:00 | NEA (H>22) | CATCH | 159 | MPEC 2021-C40 2021 CU | 2021-02-06 23:30:00 | NEA (H>22) | CATCH | 160 | MPEC 2021-C71 2021 CB2 | 2021-02-07 10:56:00 | NEA (H>22) | CATCH | 161 | MPEC 2021-C72 2021 CC2 | 2021-02-07 10:56:00 | NEA (H>22) | CATCH | 162 | MPEC 2021-C77 DAILY ORBIT UPDATE (2021 February 7) | 2021-02-07 12:05:00 | 163 | MPEC 2021-C93 2021 CR2 | 2021-02-08 20:28:00 | ✓ | NEA (H>22) | CATCH | 164 | MPEC 2021-C96 2021 CU2 | 2021-02-08 21:32:00 | ✓ | NEA (H>22) | CATCH | 165 | MPEC 2021-C155 2021 CS3 | 2021-02-09 19:51:00 | NEA (H>22) | CATCH | 166 | MPEC 2021-C167 2021 CZ3 | 2021-02-09 23:09:00 | NEA (H>22) | CATCH | 167 | MPEC 2021-C186 2021 CV4 | 2021-02-10 14:02:00 | NEA (H>22) | CATCH | 168 | MPEC 2021-C190 2021 CY4 | 2021-02-10 20:47:00 | NEA (H>22) | CATCH | 169 | MPEC 2021-C308 2021 CG8 | 2021-02-14 07:15:00 | NEA (H>22) | CATCH | 170 | MPEC 2021-C332 2021 CG9 | 2021-02-15 18:54:00 | NEA (H>22) | CATCH | 171 | MPEC 2021-D24 2021 DF | 2021-02-18 09:42:00 | NEA (H>22) | CATCH | 172 | MPEC 2021-D39 2021 DR | 2021-02-19 01:27:00 | NEA (H>22) | CATCH | 173 | MPEC 2021-D49 2021 DB1 | 2021-02-19 10:09:00 | NEA (H>22) | CATCH | 174 | MPEC 2021-D54 DAILY ORBIT UPDATE (2021 February 19) | 2021-02-19 12:23:00 | 175 | MPEC 2021-D59 2021 DK1 | 2021-02-19 15:51:00 | NEA (H>22) | CATCH | 176 | MPEC 2021-E19 COMET C/2021 D1 (SWAN) | 2021-03-04 21:12:00 | Comet | CATCH | 177 | MPEC 2021-E23 2021 EO | 2021-03-05 10:00:00 | NEA (H>22) | CATCH | 178 | MPEC 2021-E24 DAILY ORBIT UPDATE (2021 March 5) | 2021-03-05 12:35:00 | 179 | MPEC 2021-E37 DAILY ORBIT UPDATE (2021 March 6) | 2021-03-06 12:36:00 | 180 | MPEC 2021-E49 DAILY ORBIT UPDATE (2021 March 7) | 2021-03-07 12:37:00 | 181 | MPEC 2021-E53 2021 EL1 | 2021-03-07 21:49:00 | NEA (H>22) | CATCH | 182 | MPEC 2021-E54 2021 EM1 | 2021-03-07 21:50:00 | NEA (H>22) | CATCH | 183 | MPEC 2021-E55 2021 EN1 | 2021-03-07 21:51:00 | NEA (H>22) | CATCH | 184 | MPEC 2021-E61 2021 ET1 | 2021-03-08 02:47:00 | NEA (H>22) | CATCH | 185 | MPEC 2021-E101 2021 ED3 | 2021-03-10 22:51:00 | NEA (H>22) | CATCH | 186 | MPEC 2021-E102 2021 EE3 | 2021-03-10 22:53:00 | NEA (H>22) | CATCH | 187 | MPEC 2021-E105 2021 EH3 | 2021-03-10 23:00:00 | NEA (H>22) | CATCH | 188 | MPEC 2021-E106 2021 EJ3 | 2021-03-11 02:25:00 | NEA (H>22) | CATCH | 189 | MPEC 2021-E119 2021 ES3 | 2021-03-11 22:18:00 | NEA (H>22) | CATCH | 190 | MPEC 2021-F28 2021 FG | 2021-03-18 23:04:00 | PHAg18 | CATCH | 191 | MPEC 2021-F33 2021 FK | 2021-03-19 22:06:00 | NEA (H>22) | CATCH | 192 | MPEC 2021-F35 2021 FM | 2021-03-19 23:14:00 | NEA (H>22) | CATCH | 193 | MPEC 2021-F72 2021 FT1 | 2021-03-22 14:35:00 | NEA (H>22) | CATCH | 194 | MPEC 2021-F84 2021 FF2 | 2021-03-23 00:31:00 | NEA (H>22) | CATCH | 195 | MPEC 2021-G39 2021 GJ1 | 2021-04-04 22:51:00 | NEA (H>22) | CATCH | 196 | MPEC 2021-G48 DAILY ORBIT UPDATE (2021 April 5) | 2021-04-05 12:06:00 | 197 | MPEC 2021-G61 2021 GH2 | 2021-04-06 02:16:00 | NEA (H>22) | CATCH | 198 | MPEC 2021-G62 2021 GK2 | 2021-04-06 04:57:00 | NEA (H>22) | CATCH | 199 | MPEC 2021-G74 2021 GU2 | 2021-04-06 19:58:00 | NEA (H>22) | CATCH | 200 | MPEC 2021-G83 2021 GE3 | 2021-04-07 11:00:00 | NEA (H>22) | CATCH | 201 | MPEC 2021-G149 2021 GN6 | 2021-04-11 08:33:00 | NEA (H>22) | CATCH | 202 | MPEC 2021-G157 2021 GV6 | 2021-04-11 14:00:00 | ✓ | NEA (H>22) | CATCH | 203 | MPEC 2021-G187 DAILY ORBIT UPDATE (2021 April 13) | 2021-04-13 12:14:00 | 204 | MPEC 2021-G219 DAILY ORBIT UPDATE (2021 April 15) | 2021-04-15 12:16:00 | 205 | MPEC 2021-J49 2021 JX | 2021-05-04 14:32:00 | NEA (H>22) | CATCH | 206 | MPEC 2021-J52 2021 JA1 | 2021-05-05 01:47:00 | NEA (H>22) | CATCH | 207 | MPEC 2021-J145 2021 JS3 | 2021-05-10 10:53:00 | NEA (H>22) | CATCH | 208 | MPEC 2021-K82 2021 KH2 | 2021-05-25 07:09:00 | NEA (H>22) | CATCH | 209 | MPEC 2021-L43 2021 LQ | 2021-06-04 00:41:00 | ✓ | NEA (H>22) | CATCH | 210 | MPEC 2021-L169 DAILY ORBIT UPDATE (2021 June 15) | 2021-06-15 12:19:00 | 211 | MPEC 2021-P07 2021 OO1 | 2021-08-02 06:27:00 | NEA (H>22) | CATCH | 212 | MPEC 2021-P22 2021 PG | 2021-08-04 06:17:00 | ✓ | NEA (H>22) | CATCH | 213 | MPEC 2021-P66 2021 PZ1 | 2021-08-07 06:41:00 | NEA (H>22) | CATCH | 214 | MPEC 2021-P86 2021 PO2 | 2021-08-08 12:55:00 | ✓ | NEA (18>H>22) | CATCH | 215 | MPEC 2021-P89 2021 PR2 | 2021-08-08 13:14:00 | ✓ | NEA (H>22) | CATCH | 216 | MPEC 2021-R116 2021 RT1 | 2021-09-06 21:04:00 | NEA (H>22) | CATCH | 217 | MPEC 2021-R129 2021 RG2 | 2021-09-07 11:10:00 | NEA (H>22) | CATCH | 218 | MPEC 2021-R130 2021 RH2 | 2021-09-07 11:10:00 | ✓ | NEA (H>22) | CATCH | 219 | MPEC 2021-R141 2021 RS2 | 2021-09-07 21:16:00 | NEA (H>22) | CATCH | 220 | MPEC 2021-R147 2021 RW2 | 2021-09-08 00:33:00 | ✓ | NEA (18>H>22) | CATCH | 221 | MPEC 2021-R248 2021 RU7 | 2021-09-11 21:40:00 | NEA (H>22) | CATCH | 222 | MPEC 2021-R254 2021 RA8 | 2021-09-11 21:49:00 | NEA (H>22) | CATCH | 223 | MPEC 2021-R258 DAILY ORBIT UPDATE (2021 September 12) | 2021-09-12 12:09:00 | 224 | MPEC 2021-S24 2021 SG | 2021-09-17 22:07:00 | NEA (H>22) | CATCH | 225 | MPEC 2021-S31 2021 SH | 2021-09-18 11:38:00 | ✓ | NEA (H>22) | CATCH | 226 | MPEC 2021-S33 2021 SJ | 2021-09-18 11:41:00 | NEA (H>22) | CATCH | 227 | MPEC 2021-S93 2021 SU | 2021-09-27 11:12:00 | ✓ | NEA (H>22) | CATCH | 228 | MPEC 2021-T278 2021 TO14 | 2021-10-15 03:35:00 | ✓ | NEA (H>22) | CATCH | 229 | MPEC 2021-U03 2021 TL20 | 2021-10-16 11:56:00 | NEA (H>22) | CATCH | 230 | MPEC 2021-U08 2021 TC21 | 2021-10-16 18:25:00 | NEA (H>22) | CATCH | 231 | MPEC 2021-U199 2021 UQ3 | 2021-10-29 22:51:00 | NEA (H>22) | CATCH | 232 | MPEC 2021-U202 DAILY ORBIT UPDATE (2021 October 30) | 2021-10-30 12:06:00 | 233 | MPEC 2021-U222 2021 UN4 | 2021-10-30 17:53:00 | NEA (18>H>22) | CATCH | 234 | MPEC 2021-V200 DAILY ORBIT UPDATE (2021 November 10) | 2021-11-10 12:25:00 | 235 | MPEC 2021-V203 2021 VF5 | 2021-11-10 13:18:00 | NEA (H>22) | CATCH | 236 | MPEC 2021-V209 2021 VM5 | 2021-11-10 13:23:00 | NEA (H>22) | CATCH | 237 | MPEC 2021-V215 2021 VU5 | 2021-11-10 13:29:00 | NEA (H>22) | CATCH | 238 | MPEC 2021-V271 2021 VA9 | 2021-11-12 11:21:00 | ✓ | NEA (H>22) | CATCH | 239 | MPEC 2021-V274 DAILY ORBIT UPDATE (2021 November 12) | 2021-11-12 12:29:00 | 240 | MPEC 2021-V276 2018 HV1 | 2021-11-12 14:24:00 | NEA (H>22) | CATCH | 241 | MPEC 2021-V302 DAILY ORBIT UPDATE (2021 November 13) | 2021-11-13 12:02:00 | 242 | MPEC 2021-Y65 2021 YN | 2021-12-28 22:39:00 | NEA (18>H>22) | CATCH | 243 | MPEC 2021-Y79 2021 YS | 2021-12-31 18:59:00 | NEA (18>H>22) | CATCH | 244 | MPEC 2022-A05 2022 AA | 2022-01-02 21:12:00 | PHAg18 | CATCH | 245 | MPEC 2022-C204 DAILY ORBIT UPDATE (2022 February 11) | 2022-02-11 12:02:00 | 246 | MPEC 2022-F19 DAILY ORBIT UPDATE (2022 March 23) | 2022-03-23 12:14:00 | 247 | MPEC 2022-O60 2022 ON1 | 2022-07-27 02:33:00 | NEA (H>22) | CATCH | 248 | MPEC 2022-O65 2022 OS1 | 2022-07-27 17:17:00 | NEA (18>H>22) | CATCH | 249 | MPEC 2022-P70 2007 BT7 | 2022-08-05 05:19:00 | NEA (18>H>22) | CATCH | 250 | MPEC 2022-R110 2022 RP2 | 2022-09-06 03:41:00 | NEA (18>H>22) | CATCH | 251 | MPEC 2022-R134 2022 RX3 | 2022-09-08 11:00:00 | ✓ | PHAl18 | CATCH | 252 | MPEC 2022-T23 NEW FRAGMENT OF COMET 157P/TRITTON | 2022-10-02 07:20:00 | Comet | CATCH | 253 | MPEC 2022-U09 2022 UA | 2022-10-17 01:35:00 | NEA (H>22) | CATCH | 254 | MPEC 2022-U17 2022 UG | 2022-10-17 20:43:00 | ✓ | NEA (H>22) | CATCH | 255 | MPEC 2022-U33 2022 UT | 2022-10-18 16:28:00 | ✓ | PHAg18 | CATCH | 256 | MPEC 2022-U146 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2022-10-21 06:57:00 | Comet | CATCH | 257 | MPEC 2023-B118 COMET P/2023 B1 (PANSTARRS) | 2023-01-25 22:47:00 | Comet | CATCH | 258 | MPEC 2023-D67 2023 DU | 2023-02-27 04:08:00 | ✓ | NEA (H>22) | CATCH | 259 | MPEC 2023-D77 COMET C/2023 A3 (Tsuchinshan-ATLAS) | 2023-02-28 23:54:00 | Comet | CATCH | 260 | MPEC 2023-E20 2023 DB2 | 2023-03-02 11:35:00 | NEA (18>H>22) | CATCH | 261 | MPEC 2023-E25 2023 DG2 | 2023-03-02 11:39:00 | NEA (H>22) | CATCH | 262 | MPEC 2023-E39 DAILY ORBIT UPDATE (2023 March 4) | 2023-03-04 12:40:00 | 263 | MPEC 2023-W101 DAILY ORBIT UPDATE (2023 November 23) | 2023-11-23 12:06:00 | 264 | MPEC 2023-Y46 DAILY ORBIT UPDATE (2023 December 18) | 2023-12-18 12:19:00 | 265 | MPEC 2024-P125 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2024-08-11 06:50:00 | Comet | CATCH | 266 | MPEC 2024-R266 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2024-09-11 20:19:00 | Comet | CATCH | 267 | MPEC 2024-X68 2024 XA1 | 2024-12-03 18:15:00 | NEA (H>22) | CATCH | 268 | MPEC 2025-A40 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2025-01-03 03:22:00 | Comet | CATCH | 269 | MPEC 2025-A61 DAILY ORBIT UPDATE (2025 January 4) | 2025-01-04 13:08:00 | 270 | MPEC 2025-B02 DAILY ORBIT UPDATE (2025 January 17) | 2025-01-17 12:02:00 | 271 | MPEC 2025-B154 DAILY ORBIT UPDATE (2025 January 28) | 2025-01-28 12:20:00 | 272 | MPEC 2025-C50 DAILY ORBIT UPDATE (2025 February 5) | 2025-02-05 12:40:00 | 273 | MPEC 2025-C64 DAILY ORBIT UPDATE (2025 February 6) | 2025-02-06 12:39:00 | 274 | MPEC 2025-C143 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2025-02-08 19:17:00 | Comet | CATCH | 275 | MPEC 2025-G119 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2025-04-11 19:21:00 | Comet | CATCH | 276 | MPEC 2025-O159 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2025-07-31 18:52:00 | Comet | CATCH | 277 | MPEC 2025-R60 DAILY ORBIT UPDATE (2025 September 7) | 2025-09-07 12:42:00 | 278 | MPEC 2025-R69 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2025-09-09 19:18:00 | Comet | CATCH |
List of Observers
| Observer Group | Total MPECs |
|---|---|
| X.Gao | 880 |
| X.Gao, Z.-J.Xu | 27 |
| H.-J.Tan, X.Gao | 19 |
| X.Gao, X.Liao | 17 |
| M.Zhang, X.Gao | 9 |
| G.Sun, H.Tan, J.Ruan, J.Zhao, M.Zhang, Q.Ye, W.Zhou, X.Gao | 4 |
| Q.Ye, X.Gao | 3 |
| G.-Y.Sun, J.-L.Xu, L.-M.Tang, M.Zhang, P.-Y.Sun, X.Liao, Z.-J.Xu | 3 |
| Individual Observer | Total MPECs |
|---|---|
| X.Gao | 959 |
| Z.-J.Xu | 30 |
| X.Liao | 20 |
| H.-J.Tan | 19 |
| M.Zhang | 16 |
| Q.Ye | 7 |
| G.Sun | 4 |
| H.Tan | 4 |
| J.Ruan | 4 |
| J.Zhao | 4 |
| W.Zhou | 4 |
| G.-Y.Sun | 3 |
| J.-L.Xu | 3 |
| L.-M.Tang | 3 |
| P.-Y.Sun | 3 |
List of Measurers
| Measurer Group | Total MPECs |
|---|---|
| Q.-Z.Ye | 848 |
| Z.-J.Xu | 27 |
| M.Zhang, Q.-Z.Ye, Z.Xu | 22 |
| H.-J.Tan | 19 |
| X.Liao | 17 |
| M.Zhang, Q.-Z.Ye | 10 |
| M.Zhang | 9 |
| H.Tan, J.Zhao, M.Zhang | 4 |
| M.Zhang, Z.Chen | 3 |
| Individual Measurer | Total MPECs |
|---|---|
| Q.-Z.Ye | 880 |
| M.Zhang | 48 |
| Z.-J.Xu | 27 |
| Z.Xu | 22 |
| H.-J.Tan | 19 |
| X.Liao | 17 |
| H.Tan | 4 |
| J.Zhao | 4 |
| Z.Chen | 3 |
List of Facilities
| Facilities | Count |
|---|---|
| 0.6-m f/8 Ritchey-Chretien + CCD, 0.3-m f/3.6 reflector + CCD | 22 |
| 0.6-m f/8 Ritchey-Chretien + CCD | 886 |
| 0.3-m f/3.6 reflector + CCD | 2 |
| 0.3-m f/3.6 reflector | 4 |
| 0.5-m f/4 reflector + CCD | 19 |
| 0.60-m f/2.2 reflector + CCD | 3 |
| 0.28-m f/2.2 Rowe-Ackermann Schmidt Astrograph + CCD | 26 |