V11 Saguaro Observatory, Tucson

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	Orbit Update	DOU	List Update	Retraction	Other	Follow-Up	First Follow-Up
2025	6	0	0	4	2	0	0	0	0	0
2024	12	0	2	1	8	0	0	0	1	0
2023	6	0	0	1	5	0	0	0	0	0
2022	17	0	0	7	10	0	0	0	0	0
2021	7	0	0	3	3	0	0	0	1	0
2020	3	0	0	0	2	0	0	0	1	0
2019	1	0	0	1	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 2019-Y38 2017 XQ60	2019-12-21 06:19:00			NEA (H>22)	CATCH
2	MPEC 2020-A109 COMET P/2019 Y3 (Catalina)	2020-01-09 19:48:00			Comet	CATCH
3	MPEC 2020-O170 DAILY ORBIT UPDATE (2020 July 30)	2020-07-30 12:02:00
4	MPEC 2020-O177 DAILY ORBIT UPDATE (2020 July 31)	2020-07-31 12:03:00
5	MPEC 2021-F130 2021 FP3	2021-03-31 11:08:00			NEA (H>22)	CATCH
6	MPEC 2021-J158 DAILY ORBIT UPDATE (2021 May 11)	2021-05-11 12:07:00
7	MPEC 2021-L04 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2021-06-01 05:18:00			Comet	CATCH
8	MPEC 2021-U31 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2021-10-19 05:12:00			Comet	CATCH
9	MPEC 2021-W85 DAILY ORBIT UPDATE (2021 November 28)	2021-11-28 12:07:00
10	MPEC 2021-W138 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2021-11-30 05:18:00			Comet	CATCH
11	MPEC 2021-W139 DAILY ORBIT UPDATE (2021 November 30)	2021-11-30 12:09:00
12	MPEC 2022-A40 DAILY ORBIT UPDATE (2022 January 6)	2022-01-06 12:05:00
13	MPEC 2022-A65 DAILY ORBIT UPDATE (2022 January 7)	2022-01-07 12:07:00
14	MPEC 2022-B40 DAILY ORBIT UPDATE (2022 January 26)	2022-01-26 12:21:00
15	MPEC 2022-C56 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2022-02-04 04:24:00			Comet	CATCH
16	MPEC 2022-G100 DAILY ORBIT UPDATE (2022 April 7)	2022-04-07 12:10:00
17	MPEC 2022-G166 DAILY ORBIT UPDATE (2022 April 11)	2022-04-11 12:14:00
18	MPEC 2022-H30 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2022-04-23 08:53:00			Comet	CATCH
19	MPEC 2022-J69 DAILY ORBIT UPDATE (2022 May 9)	2022-05-09 12:08:00
20	MPEC 2022-J89 DAILY ORBIT UPDATE (2022 May 11)	2022-05-11 12:09:00
21	MPEC 2022-J99 DAILY ORBIT UPDATE (2022 May 12)	2022-05-12 12:21:00
22	MPEC 2022-K19 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2022-05-20 03:39:00			Comet	CATCH
23	MPEC 2022-L66 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2022-06-08 04:25:00			Comet	CATCH
24	MPEC 2022-P43 DAILY ORBIT UPDATE (2022 August 3)	2022-08-03 12:09:00
25	MPEC 2022-T133 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2022-10-13 04:45:00			Comet	CATCH
26	MPEC 2022-U177 DAILY ORBIT UPDATE (2022 October 22)	2022-10-22 12:06:00
27	MPEC 2022-V95 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2022-11-05 03:31:00			Comet	CATCH
28	MPEC 2022-V125 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2022-11-11 05:30:00			Comet	CATCH
29	MPEC 2023-B58 DAILY ORBIT UPDATE (2023 January 21)	2023-01-21 12:02:00
30	MPEC 2023-C144 DAILY ORBIT UPDATE (2023 February 14)	2023-02-14 12:13:00
31	MPEC 2023-E39 DAILY ORBIT UPDATE (2023 March 4)	2023-03-04 12:40:00
32	MPEC 2023-R32 DAILY ORBIT UPDATE (2023 September 7)	2023-09-07 12:05:00
33	MPEC 2023-V65 DAILY ORBIT UPDATE (2023 November 6)	2023-11-06 12:09:00
34	MPEC 2023-V225 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2023-11-13 04:13:00			Comet	CATCH
35	MPEC 2024-F34 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2024-03-19 18:48:00			Comet	CATCH
36	MPEC 2024-G51 DAILY ORBIT UPDATE (2024 April 5)	2024-04-05 12:11:00
37	MPEC 2024-J296 DAILY ORBIT UPDATE (2024 May 13)	2024-05-13 12:03:00
38	MPEC 2024-R36 DAILY ORBIT UPDATE (2024 September 3)	2024-09-03 12:06:00
39	MPEC 2024-R222 DAILY ORBIT UPDATE (2024 September 9)	2024-09-09 12:18:00
40	MPEC 2024-R345 2024 RB22	2024-09-14 05:55:00	✓		NEA (H>22)	CATCH
41	MPEC 2024-S44 DAILY ORBIT UPDATE (2024 September 24)	2024-09-24 12:10:00
42	MPEC 2024-S59 DAILY ORBIT UPDATE (2024 September 25)	2024-09-25 12:15:00
43	MPEC 2024-T259 COMET P/2024 S2 (Rankin)	2024-10-12 03:13:00	✓		Comet	CATCH
44	MPEC 2024-U12 2024 UB	2024-10-17 19:16:00			NEA (H>22)	CATCH
45	MPEC 2024-V179 DAILY ORBIT UPDATE (2024 November 13)	2024-11-13 12:22:00
46	MPEC 2024-X94 DAILY ORBIT UPDATE (2024 December 4)	2024-12-04 12:32:00
47	MPEC 2025-D28 DAILY ORBIT UPDATE (2025 February 19)	2025-02-19 12:09:00
48	MPEC 2025-M18 DAILY ORBIT UPDATE (2025 June 18)	2025-06-18 12:36:00
49	MPEC 2025-M120 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2025-06-26 16:33:00			Comet	CATCH
50	MPEC 2025-N12 3I/ATLAS = C/2025 N1 (ATLAS)	2025-07-02 21:31:00			Comet	CATCH
51	MPEC 2025-O84 Comet 3I/ATLAS	2025-07-25 19:31:00			Comet	CATCH
52	MPEC 2025-S298 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS	2025-09-30 17:23:00			Comet	CATCH

Objects Observed by This Station (51 total)

Object	Observations	Discoveries	First Obs	Last Obs	Magnitude	MPECs
K24R22B	210	30	2024-09-12	2024-09-25	22.1	30
PK24S020	12	4	2024-09-30	2024-09-30	18.9	4
01036	12591	0	2020-07-29	2022-01-25	15.3	1399
00433	6804	0	2020-07-30	2020-07-30	10.0	1134
01627	4485	0	2022-01-04	2022-01-04	16.7	1495
54789	2337	0	2022-05-11	2022-05-11	18.9	779
03691	2265	0	2023-11-05	2023-11-06	17.8	755
11405	2067	0	2022-01-05	2022-01-05	N/A	689
90075	1674	0	2023-02-12	2023-02-12	20.3	558
03752	1608	0	2022-08-02	2022-08-02	18.2	536
n5615	1505	0	2022-05-09	2025-06-18	19.0	301
05693	1242	0	2022-05-08	2022-05-08	18.9	414
88263	1041	0	2024-09-24	2024-09-24	18.2	347
02329	1038	0	2021-05-07	2021-05-07	19.8	346
17511	1014	0	2022-01-04	2022-01-04	19.4	338
18882	951	0	2022-01-24	2022-01-24	19.3	317
F9857	774	0	2021-11-27	2021-11-27	20.0	258
0004P	762	0	2021-10-11	2021-11-29	21.6	127
A0756	750	0	2022-04-08	2022-04-08	20.4	250
n2143	582	0	2022-10-18	2022-10-18	20.6	194
CK20H060	474	0	2021-04-08	2022-04-21	N/A	79
R6049	471	0	2024-09-02	2024-09-02	20.2	157
0119P	468	0	2022-11-08	2022-11-08	N/A	156
CK22E030	450	0	2022-05-07	2022-05-23	11.7	75
f7581	435	0	2025-02-18	2025-02-18	19.3	145
G2149	402	0	2021-11-29	2021-11-29	20.6	134
i2243	390	0	2023-11-06	2023-11-06	20.5	130
K15R36G	333	0	2024-12-03	2024-12-03	21.7	111
K24P03N	303	0	2024-11-13	2024-11-13	16.0	101
N4341	285	0	2024-04-04	2024-04-04	19.1	95
CK21T040	246	0	2022-10-12	2022-10-12	22.0	82
0070P	240	0	2022-01-24	2022-01-24	16.5	80
K19C00V	225	0	2023-01-19	2023-01-19	20.0	75
CK20S040	222	0	2022-10-31	2022-10-31	N/A	74
CK21S040	222	0	2023-11-06	2023-11-06	19.0	74
CK20J010	186	0	2022-01-24	2022-01-24	18.5	62
CK23H050	159	0	2024-03-14	2024-03-14	16.9	53
CK20T020	156	0	2021-03-31	2021-03-31	18.9	39
z3403	150	0	2022-04-06	2022-04-06	N/A	50
K24O00Y	96	0	2024-09-09	2024-09-09	22.7	32
K23Q07L	66	0	2023-09-06	2023-09-06	N/A	22
0003I	54	0	2025-07-24	2025-07-24	11.4	27
CK23V010	54	0	2025-06-10	2025-06-11	18.7	27
0024P	48	0	2025-09-24	2025-09-24	16.3	16
K23C00Z	44	0	2023-03-03	2023-03-03	19.4	22
z2970	42	0	2024-05-13	2024-05-13	19.9	14
K17X60Q	39	0	2019-12-20	2019-12-20	22.2	13
K21F03P	26	0	2021-03-31	2021-03-31	21.0	13
K24U00B	16	0	2024-10-16	2024-10-16	21.4	8
PK19Y030	14	0	2019-12-20	2019-12-20	18.2	7
0003IK25N010	2	0	2025-07-01	2025-07-02	17.8	1

List of Observers

Observer Group	Total MPECs
Unknown	30
D.Rankin	22

Individual Observer	Total MPECs
Unknown	30
D.Rankin	22

List of Measurers

Measurer Group	Total MPECs
Unknown	48
D.Parrott, D.Rankin	4

Individual Measurer	Total MPECs
Unknown	48
D.Parrott	4
D.Rankin	4

List of Facilities

Facilities	Count
0.2-m f/2 reflector + CCD	1
0.2-m reflector + CCD	1
0.20-m reflector + CCD	4
0.28-m f/2.2 reflector + CCD	9
0.30-m reflector + CCD	2
Unknown	35