Q02 Sakai Observatory, Osaka

Last update: UTC 2026-03-02 07:55:23

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 Orbit Update DOU List Update Retraction Other Follow-Up First Follow-Up
2026 3 0 0 3 0 0 0 0 0 0
2025 15 0 0 14 0 0 0 0 1 0
2024 15 0 0 15 0 0 0 0 0 0
2023 6 0 0 5 0 0 0 0 1 0
2022 9 0 0 9 0 0 0 0 0 0
2021 6 0 0 6 0 0 0 0 0 0
2020 2 0 0 1 1 0 0 0 0 0
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-M03 DAILY ORBIT UPDATE (2020 June 16) 2020-06-16 12:05:00
2 MPEC 2020-M114 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2020-06-26 22:34:00 Comet CATCH
3 MPEC 2021-N06 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-07-02 04:55:00 Comet CATCH
4 MPEC 2021-R75 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-09-05 06:14:00 Comet CATCH
5 MPEC 2021-U31 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-10-19 05:12:00 Comet CATCH
6 MPEC 2021-U109 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-10-27 07:53:00 Comet CATCH
7 MPEC 2021-W138 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-11-30 05:18:00 Comet CATCH
8 MPEC 2021-Y10 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-12-17 09:49:00 Comet CATCH
9 MPEC 2022-C56 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-02-04 04:24:00 Comet CATCH
10 MPEC 2022-D36 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-02-23 06:10:00 Comet CATCH
11 MPEC 2022-H04 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-04-17 04:45:00 Comet CATCH
12 MPEC 2022-H122 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-04-30 09:05:00 Comet CATCH
13 MPEC 2022-L66 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-06-08 04:25:00 Comet CATCH
14 MPEC 2022-M21 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-06-21 05:43:00 Comet CATCH
15 MPEC 2022-N37 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-07-06 08:40:00 Comet CATCH
16 MPEC 2022-R68 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-09-04 06:11:00 Comet CATCH
17 MPEC 2022-T100 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-10-07 06:33:00 Comet CATCH
18 MPEC 2023-A16 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2023-01-07 08:16:00 Comet CATCH
19 MPEC 2023-N01 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2023-07-01 04:39:00 Comet CATCH
20 MPEC 2023-O106 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2023-07-29 01:50:00 Comet CATCH
21 MPEC 2023-W26 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2023-11-19 01:05:00 Comet CATCH
22 MPEC 2023-X98 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2023-12-06 08:53:00 Comet CATCH
23 MPEC 2023-X256 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2023-12-13 04:23:00 Comet CATCH
24 MPEC 2024-A43 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-01-05 07:20:00 Comet CATCH
25 MPEC 2024-B57 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-01-20 07:23:00 Comet CATCH
26 MPEC 2024-D33 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-02-17 09:36:00 Comet CATCH
27 MPEC 2024-F34 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-03-19 18:48:00 Comet CATCH
28 MPEC 2024-G193 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-04-13 23:03:00 Comet CATCH
29 MPEC 2024-H91 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-04-29 19:47:00 Comet CATCH
30 MPEC 2024-J122 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-05-07 20:00:00 Comet CATCH
31 MPEC 2024-J304 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-05-14 19:08:00 Comet CATCH
32 MPEC 2024-L77 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-06-07 05:57:00 Comet CATCH
33 MPEC 2024-M118 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-06-30 07:07:00 Comet CATCH
34 MPEC 2024-P125 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-08-11 06:50:00 Comet CATCH
35 MPEC 2024-U109 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-10-26 06:57:00 Comet CATCH
36 MPEC 2024-V192 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-11-14 19:46:00 Comet CATCH
37 MPEC 2024-X74 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-12-04 00:44:00 Comet CATCH
38 MPEC 2024-Y127 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-12-27 02:56:00 Comet CATCH
39 MPEC 2025-D44 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-02-20 21:36:00 Comet CATCH
40 MPEC 2025-E119 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-03-06 19:54:00 Comet CATCH
41 MPEC 2025-G119 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-04-11 19:21:00 Comet CATCH
42 MPEC 2025-H115 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-04-24 15:59:00 Comet CATCH
43 MPEC 2025-J92 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-05-15 18:19:00 Comet CATCH
44 MPEC 2025-O159 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-07-31 18:52:00 Comet CATCH
45 MPEC 2025-P138 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-08-12 16:13:00 Comet CATCH
46 MPEC 2025-R69 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-09-09 19:18:00 Comet CATCH
47 MPEC 2025-U263 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-10-28 22:33:00 Comet CATCH
48 MPEC 2025-V36 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-11-04 20:02:00 Comet CATCH
49 MPEC 2025-V132 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-11-13 19:55:00 Comet CATCH
50 MPEC 2025-W130 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-11-25 23:19:00 Comet CATCH
51 MPEC 2025-X35 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-12-02 22:33:00 Comet CATCH
52 MPEC 2025-X108 COMET C/2025 K1-D (ATLAS) 2025-12-11 20:01:00 Comet CATCH
53 MPEC 2025-Y151 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-12-23 19:57:00 Comet CATCH
54 MPEC 2026-A24 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2026-01-07 23:27:00 Comet CATCH
55 MPEC 2026-A90 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2026-01-12 22:05:00 Comet CATCH
56 MPEC 2026-C91 COMET 3I/ATLAS 2026-02-13 16:28:00 Comet CATCH

Objects Observed by This Station

Object Observations Discoveries First Obs Last Obs Magnitude MPECs
0029P 14625 0 2021-10-02 2025-03-20 16.6 585
CK17K020 4576 0 2022-05-24 2024-02-12 18.8 176
0067P 4350 0 2021-10-02 2022-02-10 N/A 174
52768 2584 0 2020-04-27 2020-04-28 21.4 323
CK23A030 2511 0 2024-04-01 2024-11-20 18.8 93
CK19L030 2457 0 2021-11-04 2022-04-22 18.4 117
CK22E020 2354 0 2024-01-11 2025-09-01 17.8 107
0004P 1464 0 2021-12-05 2022-01-08 14.6 122
CK21S030 1125 0 2024-06-18 2024-08-08 20.0 125
0240P 1056 0 2025-11-10 2025-12-16 15.8 88
0012P 1014 0 2023-11-22 2024-03-29 16.4 78
CK22N020 888 0 2025-11-10 2025-12-16 15.7 74
CK21G020 648 0 2025-04-18 2025-05-07 15.8 108
0019P 585 0 2022-03-08 2022-04-04 13.2 117
CK23C020 584 0 2025-08-19 2025-09-01 17.5 73
CK20V020 504 0 2023-01-03 2023-01-03 18.8 126
CK22E030 504 0 2022-08-28 2022-09-26 11.7 63
0237P 450 0 2023-06-19 2023-07-16 21.5 75
0144P 430 0 2024-02-12 2024-02-28 14.7 86
CK23R010 402 0 2025-07-25 2025-08-02 15.0 67
CK19T040 375 0 2022-04-22 2022-04-22 19.3 125
0013P 348 0 2024-03-29 2024-05-25 17.4 58
0062P 332 0 2024-03-08 2024-03-08 17.2 83
0003I 280 0 2026-01-09 2026-01-27 16.5 40
CK25K010 260 0 2025-07-25 2025-11-28 17.5 20
CK22Q78E 252 0 2026-01-09 2026-01-09 15.4 84
CK20T020 204 0 2021-06-10 2021-08-04 18.9 34
CK17T020 172 0 2020-06-07 2020-06-07 12.8 43
CK24E010 168 0 2025-08-02 2025-08-02 10.9 56
CK25A060 152 0 2025-10-23 2025-10-29 6.6 19
0333P 136 0 2024-12-19 2024-12-19 N/A 34
CK25R020 112 0 2025-10-23 2025-10-29 17.7 16
CK24M010 93 0 2024-11-21 2024-11-21 17.8 31
CK23H020 78 0 2023-11-08 2023-11-08 17.5 26
CK25T010 44 0 2025-12-18 2025-12-18 13.6 11
CK25K01d 12 0 2025-11-28 2025-11-28 20.9 3

List of Observers

Observer Group Total MPECs
Y.Yamaguchi 55
Unknown 1
Individual Observer Total MPECs
Y.Yamaguchi 55
Unknown 1

List of Measurers

Measurer Group Total MPECs
Unknown 56
Individual Measurer Total MPECs
Unknown 56

List of Facilities

Facilities Count
0.08-m f/5.5 refractor 19
0.08-m f/5.5 refractor + CCD 20
0.13-m f/3.3 hyperbolic astrogragh + CCD 14
0.13-m f/3.3 hyperbolic astrograph + CCD 1
0.13-m f/5.0 hyperbolic astrogragh + CCD 1
Unknown 1