U71 AHS Observatory, Castaic

Where is this observatory?

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
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
11 MPEC 2021-G201 DAILY ORBIT UPDATE (2021 April 14) 2021-04-14 15:15:00
12 MPEC 2021-G163 DAILY ORBIT UPDATE (2021 April 12) 2021-04-12 15:13:00
13 MPEC 2021-G03 DAILY ORBIT UPDATE (2021 April 1) 2021-04-01 15:02:00
14 MPEC 2021-F47 DAILY ORBIT UPDATE (2021 March 20) 2021-03-20 15:03:00
15 MPEC 2021-F20 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-03-18 08:58:00 Comet CATCH
16 MPEC 2021-E49 DAILY ORBIT UPDATE (2021 March 7) 2021-03-07 15:37:00
17 MPEC 2021-D90 DAILY ORBIT UPDATE (2021 February 23) 2021-02-23 12:26:00
18 MPEC 2021-D69 DAILY ORBIT UPDATE (2021 February 20) 2021-02-20 12:23:00
19 MPEC 2021-D54 DAILY ORBIT UPDATE (2021 February 19) 2021-02-19 12:23:00
20 MPEC 2021-C123 DAILY ORBIT UPDATE (2021 February 9) 2021-02-09 12:09:00
21 MPEC 2021-C17 DAILY ORBIT UPDATE (2021 February 4) 2021-02-04 12:02:00
22 MPEC 2021-C01 DAILY ORBIT UPDATE (2021 February 1) 2021-02-01 13:41:00
23 MPEC 2021-B143 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-01-31 04:56:00 Comet CATCH
24 MPEC 2021-B121 DAILY ORBIT UPDATE (2021 January 23) 2021-01-23 12:02:00
25 MPEC 2021-B110 DAILY ORBIT UPDATE (2021 January 22) 2021-01-22 12:02:00
26 MPEC 2021-B84 DAILY ORBIT UPDATE (2021 January 20) 2021-01-20 12:02:00
27 MPEC 2021-B69 DAILY ORBIT UPDATE (2021 January 19) 2021-01-19 12:02:00
28 MPEC 2021-B55 DAILY ORBIT UPDATE (2021 January 18) 2021-01-18 12:23:00
29 MPEC 2021-A190 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-01-15 00:38:00 Comet CATCH
30 MPEC 2021-A138 DAILY ORBIT UPDATE (2021 January 11) 2021-01-11 12:12:00
31 MPEC 2021-A71 DAILY ORBIT UPDATE (2021 January 8) 2021-01-08 12:13:00
32 MPEC 2021-A28 DAILY ORBIT UPDATE (2021 January 5) 2021-01-05 12:04:00
33 MPEC 2020-Y94 DAILY ORBIT UPDATE (2020 December 22) 2020-12-22 12:33:00
34 MPEC 2020-Y65 DAILY ORBIT UPDATE (2020 December 21) 2020-12-21 12:31:00
35 MPEC 2020-Y56 DAILY ORBIT UPDATE (2020 December 20) 2020-12-20 12:30:00
36 MPEC 2020-W190 DAILY ORBIT UPDATE (2020 November 30) 2020-11-30 12:11:00
37 MPEC 2020-W164 DAILY ORBIT UPDATE (2020 November 26) 2020-11-26 12:08:00
38 MPEC 2020-W135 DAILY ORBIT UPDATE (2020 November 24) 2020-11-24 12:07:00
39 MPEC 2020-W71 DAILY ORBIT UPDATE (2020 November 19) 2020-11-19 12:03:00
40 MPEC 2020-W62 DAILY ORBIT UPDATE (2020 November 18) 2020-11-18 12:02:00
41 MPEC 2020-W27 DAILY ORBIT UPDATE (2020 November 17) 2020-11-17 12:04:00
42 MPEC 2020-W26 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2020-11-17 07:41:00 Comet CATCH
43 MPEC 2020-V143 DAILY ORBIT UPDATE (2020 November 14) 2020-11-14 12:09:00
44 MPEC 2020-V92 DAILY ORBIT UPDATE (2020 November 12) 2020-11-12 12:08:00
45 MPEC 2020-U266 DAILY ORBIT UPDATE (2020 October 30) 2020-10-30 12:10:00
46 MPEC 2020-U132 DAILY ORBIT UPDATE (2020 October 20) 2020-10-20 12:46:00
47 MPEC 2020-U119 DAILY ORBIT UPDATE (2020 October 19) 2020-10-19 12:43:00
48 MPEC 2020-U37 DAILY ORBIT UPDATE (2020 October 17) 2020-10-17 12:40:00
49 MPEC 2020-S253 DAILY ORBIT UPDATE (2020 September 30) 2020-09-30 12:04:00
50 MPEC 2020-Q205 DAILY ORBIT UPDATE (2020 August 27) 2020-08-27 12:01:00
51 MPEC 2020-Q146 DAILY ORBIT UPDATE (2020 August 21) 2020-08-21 12:11:00
52 MPEC 2020-P21 DAILY ORBIT UPDATE (2020 August 6) 2020-08-06 12:05:00
53 MPEC 2020-P19 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2020-08-04 23:06:00 Comet CATCH
54 MPEC 2020-P14 DAILY ORBIT UPDATE (2020 August 3) 2020-08-03 12:05:00
55 MPEC 2020-P09 DAILY ORBIT UPDATE (2020 August 2) 2020-08-02 12:04:00
56 MPEC 2020-O151 DAILY ORBIT UPDATE (2020 July 29) 2020-07-29 12:01:00
57 MPEC 2020-O103 DAILY ORBIT UPDATE (2020 July 25) 2020-07-25 12:23:00
58 MPEC 2020-O85 DAILY ORBIT UPDATE (2020 July 24) 2020-07-24 12:22:00
59 MPEC 2020-O39 DAILY ORBIT UPDATE (2020 July 20) 2020-07-20 12:19:00
60 MPEC 2020-O34 2020 ON 2020-07-20 00:21:00 PHAg18 CATCH
61 MPEC 2020-O09 DAILY ORBIT UPDATE (2020 July 17) 2020-07-17 12:15:00
62 MPEC 2020-O05 DAILY ORBIT UPDATE (2020 July 16) 2020-07-16 12:15:00
63 MPEC 2020-N66 DAILY ORBIT UPDATE (2020 July 15) 2020-07-15 12:14:00
64 MPEC 2020-N54 DAILY ORBIT UPDATE (2020 July 13) 2020-07-13 12:10:00
65 MPEC 2020-N46 DAILY ORBIT UPDATE (2020 July 12) 2020-07-12 12:09:00
66 MPEC 2020-N32 DAILY ORBIT UPDATE (2020 July 10) 2020-07-10 12:06:00
67 MPEC 2020-N26 DAILY ORBIT UPDATE (2020 July 9) 2020-07-09 12:04:00
68 MPEC 2020-N25 DAILY ORBIT UPDATE (2020 July 8) 2020-07-08 12:03:00
69 MPEC 2020-L60 DAILY ORBIT UPDATE (2020 June 15) 2020-06-15 12:04:00
70 MPEC 2020-L37 2020 LE 2020-06-09 16:50:00 NEA (18>H>22) CATCH
71 MPEC 2020-K216 DAILY ORBIT UPDATE (2020 May 29) 2020-05-29 12:06:00
72 MPEC 2020-K159 COMET C/2020 K3 (Leonard) 2020-05-25 03:51:00 Comet CATCH
73 MPEC 2020-K105 DAILY ORBIT UPDATE (2020 May 21) 2020-05-21 12:15:00
74 MPEC 2020-K39 DAILY ORBIT UPDATE (2020 May 18) 2020-05-18 12:11:00
75 MPEC 2020-K21 DAILY ORBIT UPDATE (2020 May 17) 2020-05-17 12:10:00
76 MPEC 2020-K02 DAILY ORBIT UPDATE (2020 May 16) 2020-05-16 12:10:00
77 MPEC 2020-J82 DAILY ORBIT UPDATE (2020 May 15) 2020-05-15 12:08:00
78 MPEC 2020-J68 COMET P/2019 LM4 (Palomar) 2020-05-14 21:12:00 Comet CATCH
79 MPEC 2020-J59 DAILY ORBIT UPDATE (2020 May 14) 2020-05-14 12:07:00
80 MPEC 2020-H211 DAILY ORBIT UPDATE (2020 April 28) 2020-04-28 12:13:00
81 MPEC 2020-H138 DAILY ORBIT UPDATE (2020 April 24) 2020-04-24 12:08:00
82 MPEC 2020-H03 DAILY ORBIT UPDATE (2020 April 16) 2020-04-16 12:03:00
83 MPEC 2020-F184 DAILY ORBIT UPDATE (2020 March 31) 2020-03-31 12:10:00
84 MPEC 2020-F01 DAILY ORBIT UPDATE (2020 March 16) 2020-03-16 12:01:00
85 MPEC 2020-D111 DAILY ORBIT UPDATE (2020 February 26) 2020-02-26 12:19:00
86 MPEC 2020-D36 DAILY ORBIT UPDATE (2020 February 18) 2020-02-18 12:10:00
87 MPEC 2020-C34 DAILY ORBIT UPDATE (2020 February 2) 2020-02-02 12:26:00
88 MPEC 2020-B275 DAILY ORBIT UPDATE (2020 January 30) 2020-01-30 12:21:00
89 MPEC 2020-B213 DAILY ORBIT UPDATE (2020 January 27) 2020-01-27 12:18:00
90 MPEC 2020-B148 DAILY ORBIT UPDATE (2020 January 25) 2020-01-25 12:12:00
91 MPEC 2020-B94 DAILY ORBIT UPDATE (2020 January 23) 2020-01-23 15:33:00
92 MPEC 2020-B72 DAILY ORBIT UPDATE (2020 January 22) 2020-01-22 12:07:00

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