U71 AHS Observatory, Castaic
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 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2024 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2023 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2022 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2021 | 29 | 0 | 0 | 4 | 25 | 0 | 0 | 0 | 0 | 0 |
| 2020 | 60 | 0 | 0 | 1 | 54 | 0 | 0 | 0 | 5 | 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 |
|---|
Index | Name | Date/Time | Discoverer | First-responding Confirmer | Object Type | Search Archival Image |
|---|---|---|---|---|---|---|
| 1 | MPEC 2025-A159 DAILY ORBIT UPDATE (2025 January 10) | 2025-01-10 13:42:00 | ||||
| 2 | MPEC 2023-H227 COMET P/2010 OE101 = P/2021 LJ31 (WISE) | 2023-04-28 06:34:00 | Comet | CATCH | ||
| 3 | MPEC 2022-A179 DAILY ORBIT UPDATE (2022 January 14) | 2022-01-14 12:15:00 | ||||
| 4 | MPEC 2021-Y76 DAILY ORBIT UPDATE (2021 December 31) | 2021-12-31 12:01:00 | ||||
| 5 | MPEC 2021-S39 DAILY ORBIT UPDATE (2021 September 19) | 2021-09-19 12:17:00 | ||||
| 6 | MPEC 2021-S36 DAILY ORBIT UPDATE (2021 September 18) | 2021-09-18 12:16:00 | ||||
| 7 | MPEC 2021-M91 DAILY ORBIT UPDATE (2021 June 26) | 2021-06-26 12:21:00 | ||||
| 8 | MPEC 2021-J210 DAILY ORBIT UPDATE (2021 May 14) | 2021-05-14 12:10:00 | ||||
| 9 | MPEC 2021-J28 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2021-05-03 06:02:00 | Comet | CATCH | ||
| 10 | MPEC 2021-H73 DAILY ORBIT UPDATE (2021 April 19) | 2021-04-19 15:20:00 |
List of Observers
Observers | Count |
|---|---|
| M. Forslund, S. Deen | 18 |
| M. Forslund | 51 |
List of Measurers
Measurers | Count |
|---|---|
| S. Deen | 18 |
List of Facilities
Facilities | Count |
|---|---|
| 0.68-m f/2.0 reflector + CCD | 18 |
| 0.79-m reflector + CCD | 3 |
| 0.36-m f/2.2 reflector + CCD | 48 |