W87 Cerro Tololo-LCO C

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 11 0 0 6 2 0 0 0 3 0
2024 6 0 0 1 1 0 0 0 3 1
2023 7 0 0 2 3 0 0 0 2 0
2022 6 0 0 1 3 0 0 0 2 0
2021 19 0 0 4 11 0 0 0 4 0
2020 13 0 0 1 5 0 0 0 7 0
2019 43 0 0 2 20 0 0 0 17 4
2018 33 0 1 4 18 0 0 0 7 3
2017 38 0 0 7 27 0 0 0 3 1
2016 9 0 0 2 7 0 0 0 0 0
2015 28 0 0 1 14 0 0 0 7 6
2014 62 0 0 6 16 0 0 0 26 14
2013 30 0 0 1 10 0 0 0 15 4
2012 3 0 0 0 2 0 0 0 1 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 2012-W55 DAILY ORBIT UPDATE (2012 NOV. 28 UT) 2012-11-28 06:05:00
2 MPEC 2012-X21 DAILY ORBIT UPDATE (2012 DEC. 6 UT) 2012-12-06 06:02:00
3 MPEC 2012-X25 2012 XG16 2012-12-07 21:30:00 NEA (18>H>22) CATCH
4 MPEC 2013-B96 DAILY ORBIT UPDATE (2013 JAN. 31 UT) 2013-01-31 06:02:00
5 MPEC 2013-C10 2013 CY 2013-02-02 22:58:00 NEA (H>22) CATCH
6 MPEC 2013-C15 DAILY ORBIT UPDATE (2013 FEB. 5 UT) 2013-02-05 06:02:00
7 MPEC 2013-G09 2013 GH 2013-04-03 18:15:00 PHAg18 CATCH
8 MPEC 2013-G15 2013 GM3 2013-04-05 13:34:00 NEA (H>22) CATCH
9 MPEC 2013-G19 DAILY ORBIT UPDATE (2013 APR. 6 UT) 2013-04-06 06:02:00
10 MPEC 2013-G20 2013 GY7 2013-04-06 15:31:00 PHAg18 CATCH
11 MPEC 2013-G22 DAILY ORBIT UPDATE (2013 APR. 7 UT) 2013-04-07 06:03:00
12 MPEC 2013-G30 2013 GH23 2013-04-08 21:47:00 ✓ NEA (H>22) CATCH
13 MPEC 2013-G34 2013 GD34 2013-04-09 20:52:00 NEA (H>22) CATCH
14 MPEC 2013-G36 2013 GJ35 2013-04-10 12:17:00 NEAl18 CATCH
15 MPEC 2013-G43 2013 GU38 2013-04-10 23:16:00 NEA (18>H>22) CATCH
16 MPEC 2013-G47 2013 GY54 2013-04-11 17:59:00 Unusual CATCH
17 MPEC 2013-G54 DAILY ORBIT UPDATE (2013 APR. 12 UT) 2013-04-12 06:03:00
18 MPEC 2013-H16 DAILY ORBIT UPDATE (2013 APR. 18 UT) 2013-04-18 06:03:00
19 MPEC 2013-H19 2013 HR 2013-04-18 17:07:00 ✓ NEA (H>22) CATCH
20 MPEC 2013-K09 2013 JE34 2013-05-17 22:31:00 NEA (H>22) CATCH
21 MPEC 2013-K35 DAILY ORBIT UPDATE (2013 MAY 23 UT) 2013-05-23 06:04:00
22 MPEC 2013-O24 2013 OO2 2013-07-19 13:14:00 NEA (H>22) CATCH
23 MPEC 2013-O27 2013 OW2 2013-07-19 22:36:00 ✓ NEA (18>H>22) CATCH
24 MPEC 2013-O50 2013 OU3 2013-07-27 12:28:00 NEA (H>22) CATCH
25 MPEC 2013-O63 DAILY ORBIT UPDATE (2013 JULY 30 UT) 2013-07-30 06:02:00
26 MPEC 2013-P66 2013 PF26 2013-08-12 21:43:00 ✓ NEA (H>22) CATCH
27 MPEC 2013-Q01 DAILY ORBIT UPDATE (2013 AUG. 16 UT) 2013-08-16 06:04:00
28 MPEC 2013-Q37 COMET P/2013 P5 (PANSTARRS) 2013-08-27 14:27:00 Comet CATCH
29 MPEC 2013-X53 DAILY ORBIT UPDATE (2013 DEC. 11 UT) 2013-12-11 14:03:00
30 MPEC 2014-K72 DAILY ORBIT UPDATE (2014 MAY 29 UT) 2014-05-29 12:02:00
31 MPEC 2014-L02 DAILY ORBIT UPDATE (2014 JUNE 1 UT) 2014-06-01 12:03:00
32 MPEC 2014-L31 2014 LO14 2014-06-06 02:47:00 ✓ NEA (18>H>22) CATCH
33 MPEC 2014-L49 DAILY ORBIT UPDATE (2014 JUNE 10 UT) 2014-06-10 12:02:00
34 MPEC 2014-M12 DAILY ORBIT UPDATE (2014 JUNE 19 UT) 2014-06-19 12:01:00
35 MPEC 2014-M42 2014 MK6 2014-06-25 15:07:00 ✓ NEA (18>H>22) CATCH
36 MPEC 2014-M67 2014 MX26 2014-06-30 01:50:00 ✓ Unusual CATCH
37 MPEC 2014-N22 DAILY ORBIT UPDATE (2014 JULY 4 UT) 2014-07-04 12:02:00
38 MPEC 2014-N72 COMET C/2014 N3 (NEOWISE) 2014-07-13 02:54:00 Comet CATCH
39 MPEC 2014-O08 2014 NC64 2014-07-18 20:14:00 ✓ NEA (18>H>22) CATCH
40 MPEC 2014-O19 2014 NH64 2014-07-21 16:01:00 ✓ NEA (18>H>22) CATCH
41 MPEC 2014-O30 2014 OY1 2014-07-25 02:27:00 PHAg18 CATCH
42 MPEC 2014-O41 2014 OR2 2014-07-26 21:21:00 Unusual CATCH
43 MPEC 2014-O54 OBSERVATIONS AND ORBITS OF COMETS 2014-07-28 19:45:00 Comet CATCH
44 MPEC 2014-P07 DAILY ORBIT UPDATE (2014 AUG. 2 UT) 2014-08-02 12:02:00
45 MPEC 2014-P09 2014 OZ337 2014-08-03 01:41:00 NEA (H>22) CATCH
46 MPEC 2014-P22 2014 OM339 2014-08-04 14:02:00 ✓ PHAg18 CATCH
47 MPEC 2014-P28 DAILY ORBIT UPDATE (2014 AUG. 5 UT) 2014-08-05 12:02:00
48 MPEC 2014-P30 2014 OQ344 2014-08-05 14:14:00 ✓ Unusual CATCH
49 MPEC 2014-P32 DAILY ORBIT UPDATE (2014 AUG. 6 UT) 2014-08-06 12:03:00
50 MPEC 2014-P39 2014 PC58 2014-08-07 14:11:00 ✓ NEA (18>H>22) CATCH
51 MPEC 2014-P41 OBSERVATIONS AND ORBITS OF COMETS 2014-08-07 20:51:00 Comet CATCH
52 MPEC 2014-P48 DAILY ORBIT UPDATE (2014 AUG. 9 UT) 2014-08-09 12:03:00
53 MPEC 2014-P51 DAILY ORBIT UPDATE (2014 AUG. 11 UT) 2014-08-11 12:01:00
54 MPEC 2014-P52 DAILY ORBIT UPDATE (2014 AUG. 12 UT) 2014-08-12 12:01:00
55 MPEC 2014-P58 2014 OT392 2014-08-13 22:08:00 NEA (H>22) CATCH
56 MPEC 2014-P60 DAILY ORBIT UPDATE (2014 AUG. 14 UT) 2014-08-14 12:01:00
57 MPEC 2014-Q13 2014 QU2 2014-08-20 14:10:00 Unusual CATCH
58 MPEC 2014-Q51 DAILY ORBIT UPDATE (2014 AUG. 26 UT) 2014-08-26 12:02:00
59 MPEC 2014-Q52 2014 PP69 2014-08-26 13:20:00 NEA (18>H>22) CATCH
60 MPEC 2014-Q100 2014 QR362 2014-08-30 14:58:00 ✓ NEA (18>H>22) CATCH
61 MPEC 2014-R103 2014 RW22 2014-09-15 20:51:00 NEA (H>22) CATCH
62 MPEC 2014-S01 2014 RX22 2014-09-16 00:07:00 NEA (H>22) CATCH
63 MPEC 2014-S10 COMET C/2014 QU2 (PANSTARRS) 2014-09-17 20:03:00 Comet CATCH
64 MPEC 2014-S16 DAILY ORBIT UPDATE (2014 SEPT. 19 UT) 2014-09-19 12:03:00
65 MPEC 2014-S21 DAILY ORBIT UPDATE (2014 SEPT. 20 UT) 2014-09-20 12:43:00
66 MPEC 2014-S24 2014 SN1 2014-09-20 14:21:00 ✓ NEA (H>22) CATCH
67 MPEC 2014-S38 2014 SU141 2014-09-22 23:06:00 ✓ NEA (18>H>22) CATCH
68 MPEC 2014-S56 2014 SM143 2014-09-23 16:19:00 PHAg18 CATCH
69 MPEC 2014-S88 2009 WD 2014-09-25 04:28:00 NEA (18>H>22) CATCH
70 MPEC 2014-S125 OBSERVATIONS AND ORBITS OF COMETS 2014-09-30 15:50:00 Comet CATCH
71 MPEC 2014-T57 2014 TJ33 2014-10-11 14:09:00 ✓ NEA (H>22) CATCH
72 MPEC 2014-T63 2014 TK34 2014-10-13 14:06:00 ✓ Unusual CATCH
73 MPEC 2014-U136 DAILY ORBIT UPDATE (2014 OCT. 31 UT) 2014-10-31 12:06:00
74 MPEC 2014-V19 2014 UU192 2014-11-03 14:19:00 ✓ NEA (18>H>22) CATCH
75 MPEC 2014-V45 2014 VH2 2014-11-12 18:08:00 NEA (18>H>22) CATCH
76 MPEC 2014-V49 2014 VL6 2014-11-13 18:50:00 PHAg18 CATCH
77 MPEC 2014-V72 2014 VC10 2014-11-15 14:04:00 NEA (18>H>22) CATCH
78 MPEC 2015-A38 DAILY ORBIT UPDATE (2015 JAN. 15 UT) 2015-01-15 12:04:00
79 MPEC 2015-B56 2015 AB246 2015-01-19 15:00:00 ✓ NEA (H>22) CATCH
80 MPEC 2015-B141 DAILY ORBIT UPDATE (2015 JAN. 27 UT) 2015-01-27 12:06:00
81 MPEC 2015-D36 DAILY ORBIT UPDATE (2015 FEB. 20 UT) 2015-02-20 12:10:00
82 MPEC 2015-D82 2015 DG198 2015-02-25 15:07:00 ✓ NEA (H>22) CATCH
83 MPEC 2015-D86 DAILY ORBIT UPDATE (2015 FEB. 26 UT) 2015-02-26 12:06:00
84 MPEC 2015-D90 2015 DV198 2015-02-26 15:13:00 ✓ NEA (18>H>22) CATCH
85 MPEC 2015-G04 DAILY ORBIT UPDATE (2015 APR. 2 UT) 2015-04-02 12:11:00
86 MPEC 2015-G54 DAILY ORBIT UPDATE (2015 APR. 14 UT) 2015-04-14 12:03:00
87 MPEC 2015-M15 DAILY ORBIT UPDATE (2015 JUNE 17 UT) 2015-06-17 12:03:00
88 MPEC 2015-M30 2015 MO11 2015-06-20 17:09:00 ✓ NEA (18>H>22) CATCH
89 MPEC 2015-M47 2015 MS59 2015-06-23 14:52:00 ✓ NEA (18>H>22) CATCH
90 MPEC 2015-M66 DAILY ORBIT UPDATE (2015 JUNE 27 UT) 2015-06-27 12:04:00
91 MPEC 2015-O17 DAILY ORBIT UPDATE (2015 JULY 18 UT) 2015-07-18 12:02:00
92 MPEC 2015-O19 DAILY ORBIT UPDATE (2015 JULY 19 UT) 2015-07-19 12:02:00
93 MPEC 2015-O46 DAILY ORBIT UPDATE (2015 JULY 23 UT) 2015-07-23 12:02:00
94 MPEC 2015-O47 DAILY ORBIT UPDATE (2015 JULY 24 UT) 2015-07-24 12:03:00
95 MPEC 2015-Q38 DAILY ORBIT UPDATE (2015 AUG. 21 UT) 2015-08-21 12:03:00
96 MPEC 2015-Q47 2015 QQ3 2015-08-22 14:09:00 NEA (18>H>22) CATCH
97 MPEC 2015-Q62 2015 QE9 2015-08-24 14:48:00 ✓ NEA (18>H>22) CATCH
98 MPEC 2015-Q70 DAILY ORBIT UPDATE (2015 AUG. 27 UT) 2015-08-27 12:02:00
99 MPEC 2015-R02 COMET P/2015 Q2 (PIMENTEL) 2015-09-01 22:50:00 Comet CATCH
100 MPEC 2016-B83 DAILY ORBIT UPDATE (2016 JAN. 29 UT) 2016-01-29 13:04:00
101 MPEC 2016-D32 OBSERVATIONS AND ORBITS OF COMETS 2016-02-20 14:42:00 Comet CATCH
102 MPEC 2016-F43 OBSERVATIONS AND ORBITS OF COMETS 2016-03-21 10:45:00 Comet CATCH
103 MPEC 2016-R135 DAILY ORBIT UPDATE (2016 SEPT. 11 UT) 2016-09-11 12:03:00
104 MPEC 2016-R142 DAILY ORBIT UPDATE (2016 SEPT. 12 UT) 2016-09-12 12:03:00
105 MPEC 2016-Y07 DAILY ORBIT UPDATE (2016 DEC. 17 UT) 2016-12-17 13:05:00
106 MPEC 2016-Y21 DAILY ORBIT UPDATE (2016 DEC. 20 UT) 2016-12-20 13:05:00
107 MPEC 2016-Y31 DAILY ORBIT UPDATE (2016 DEC. 21 UT) 2016-12-21 13:05:00
108 MPEC 2016-Y35 DAILY ORBIT UPDATE (2016 DEC. 22 UT) 2016-12-22 13:04:00
109 MPEC 2017-A76 DAILY ORBIT UPDATE (2017 JAN. 11 UT) 2017-01-11 13:06:00
110 MPEC 2017-B06 DAILY ORBIT UPDATE (2017 JAN. 17 UT) 2017-01-17 13:02:00
111 MPEC 2017-B25 DAILY ORBIT UPDATE (2017 JAN. 20 UT) 2017-01-20 13:02:00
112 MPEC 2017-B54 DAILY ORBIT UPDATE (2017 JAN. 24 UT) 2017-01-24 13:03:00
113 MPEC 2017-B62 DAILY ORBIT UPDATE (2017 JAN. 25 UT) 2017-01-25 13:02:00
114 MPEC 2017-B70 DAILY ORBIT UPDATE (2017 JAN. 27 UT) 2017-01-27 13:04:00
115 MPEC 2017-B102 DAILY ORBIT UPDATE (2017 JAN. 28 UT) 2017-01-28 13:56:00
116 MPEC 2017-B110 DAILY ORBIT UPDATE (2017 JAN. 29 UT) 2017-01-29 13:04:00
117 MPEC 2017-B160 DAILY ORBIT UPDATE (2017 JAN. 31 UT) 2017-01-31 13:04:00
118 MPEC 2017-C14 DAILY ORBIT UPDATE (2017 FEB. 1 UT) 2017-02-01 13:05:00
119 MPEC 2017-C16 DAILY ORBIT UPDATE (2017 FEB. 2 UT) 2017-02-02 13:06:00
120 MPEC 2017-C33 DAILY ORBIT UPDATE (2017 FEB. 3 UT) 2017-02-03 13:07:00
121 MPEC 2017-D12 DAILY ORBIT UPDATE (2017 FEB. 17 UT) 2017-02-17 13:04:00
122 MPEC 2017-E56 DAILY ORBIT UPDATE (2017 MAR. 7 UT) 2017-03-07 13:17:00
123 MPEC 2017-H18 DAILY ORBIT UPDATE (2017 APR. 19 UT) 2017-04-19 12:00:00
124 MPEC 2017-H76 DAILY ORBIT UPDATE (2017 APR. 28 UT) 2017-04-28 11:59:00
125 MPEC 2017-L56 DAILY ORBIT UPDATE (2017 JUNE 10 UT) 2017-06-10 12:35:00
126 MPEC 2017-L66 DAILY ORBIT UPDATE (2017 JUNE 13 UT) 2017-06-13 11:59:00
127 MPEC 2017-Q52 2017 QQ1 2017-08-20 02:21:00 ✓ NEA (H>22) CATCH
128 MPEC 2017-R52 DAILY ORBIT UPDATE (2017 SEPT. 13 UT) 2017-09-13 12:03:00
129 MPEC 2017-T14 OBSERVATIONS AND ORBITS OF COMETS 2017-10-03 16:54:00 Comet CATCH
130 MPEC 2017-T43 DAILY ORBIT UPDATE (2017 OCT. 11 UT) 2017-10-11 12:03:00
131 MPEC 2017-U180 COMET C/2017 T2 (PANSTARRS) 2017-10-25 03:16:00 Comet CATCH
132 MPEC 2017-U184 DAILY ORBIT UPDATE (2017 OCT. 26 UT) 2017-10-26 12:07:00
133 MPEC 2017-U233 DAILY ORBIT UPDATE (2017 OCT. 27 UT) 2017-10-27 12:06:00
134 MPEC 2017-V13 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2017-11-03 22:26:00 Comet CATCH
135 MPEC 2017-V26 DAILY ORBIT UPDATE (2017 NOV. 8 UT) 2017-11-08 13:04:00
136 MPEC 2017-V29 DAILY ORBIT UPDATE (2017 NOV. 10 UT) 2017-11-10 13:04:00
137 MPEC 2017-V78 DAILY ORBIT UPDATE (2017 NOV. 15 UT) 2017-11-15 13:05:00
138 MPEC 2017-X06 COMET C/2017 U5 (PANSTARRS) 2017-12-02 04:19:00 Comet CATCH
139 MPEC 2017-X08 OBSERVATIONS AND ORBITS OF COMETS 2017-12-03 00:40:00 Comet CATCH
140 MPEC 2017-X77 DAILY ORBIT UPDATE (2017 DEC. 8 UT) 2017-12-08 13:03:00
141 MPEC 2017-X82 DAILY ORBIT UPDATE (2017 DEC. 9 UT) 2017-12-09 13:03:00
142 MPEC 2017-X89 2017 XB1 2017-12-11 01:55:00 NEA (H>22) CATCH
143 MPEC 2017-Y31 2017 XB62 2017-12-19 14:16:00 NEA (18>H>22) CATCH
144 MPEC 2017-Y44 COMET P/2017 W3 (Gibbs) 2017-12-19 18:46:00 Comet CATCH
145 MPEC 2017-Y45 COMET C/2017 X1 (PANSTARRS) 2017-12-19 19:40:00 Comet CATCH
146 MPEC 2018-B113 DAILY ORBIT UPDATE (2018 JAN. 24 UT) 2018-01-24 13:06:00
147 MPEC 2018-C45 2017 UR52 2018-02-09 01:50:00 NEA (18>H>22) CATCH
148 MPEC 2018-E02 DAILY ORBIT UPDATE (2018 MAR. 1 UT) 2018-03-01 13:05:00
149 MPEC 2018-E04 DAILY ORBIT UPDATE (2018 MAR. 3 UT) 2018-03-03 13:01:00
150 MPEC 2018-E17 A/2017 U7 2018-03-04 22:15:00 Comet CATCH
151 MPEC 2018-E23 DAILY ORBIT UPDATE (2018 MAR. 7 UT) 2018-03-07 13:02:00
152 MPEC 2018-E51 2018 ER1 2018-03-10 19:44:00 ✓ NEA (H>22) CATCH
153 MPEC 2018-E110 DAILY ORBIT UPDATE (2018 MAR. 15 UT) 2018-03-15 12:02:00
154 MPEC 2018-F47 DAILY ORBIT UPDATE (2018 MAR. 20 UT) 2018-03-20 12:04:00
155 MPEC 2018-F79 2018 FA3 2018-03-21 17:04:00 ✓ NEA (H>22) CATCH
156 MPEC 2018-F82 2018 FW2 2018-03-21 17:21:00 NEA (H>22) CATCH
157 MPEC 2018-F110 DAILY ORBIT UPDATE (2018 MAR. 23 UT) 2018-03-23 12:04:00
158 MPEC 2018-G74 DAILY ORBIT UPDATE (2018 APR. 13 UT) 2018-04-13 12:02:00
159 MPEC 2018-H29 DAILY ORBIT UPDATE (2018 APR. 18 UT) 2018-04-18 12:03:00
160 MPEC 2018-H42 DAILY ORBIT UPDATE (2018 APR. 20 UT) 2018-04-20 12:03:00
161 MPEC 2018-H69 DAILY ORBIT UPDATE (2018 APR. 23 UT) 2018-04-23 12:04:00
162 MPEC 2018-H71 DAILY ORBIT UPDATE (2018 APR. 24 UT) 2018-04-24 12:05:00
163 MPEC 2018-L29 DAILY ORBIT UPDATE (2018 JUNE 8 UT) 2018-06-08 12:03:00
164 MPEC 2018-L39 DAILY ORBIT UPDATE (2018 JUNE 9 UT) 2018-06-09 12:03:00
165 MPEC 2018-N92 2018 NC4 2018-07-15 19:32:00 ✓ Unusual CATCH
166 MPEC 2018-O01 COMET C/2018 N2 (ASASSN) 2018-07-16 00:57:00 ✓ Comet CATCH
167 MPEC 2018-P41 2018 PF9 2018-08-10 15:03:00 NEA (H>22) CATCH
168 MPEC 2018-R39 DAILY ORBIT UPDATE (2018 SEPT. 7 UT) 2018-09-07 12:05:00
169 MPEC 2018-S50 OBSERVATIONS AND ORBITS OF COMETS 2018-09-21 00:29:00 Comet CATCH
170 MPEC 2018-U88 DAILY ORBIT UPDATE (2018 OCT. 30 UT) 2018-10-30 12:04:00
171 MPEC 2018-W04 COMET 46P/Wirtanen 2018-11-16 22:36:00 Comet CATCH
172 MPEC 2018-W59 COMET 46P/Wirtanen 2018-11-27 18:12:00 Comet CATCH
173 MPEC 2018-X42 DAILY ORBIT UPDATE (2018 DEC. 5 UT) 2018-12-05 13:05:00
174 MPEC 2018-Y54 DAILY ORBIT UPDATE (2018 DEC. 21 UT) 2018-12-21 13:07:00
175 MPEC 2018-Y74 COMET 46P/Wirtanen 2018-12-26 17:43:00 Comet CATCH
176 MPEC 2019-A160 2019 AU7 2019-01-10 15:44:00 ✓ NEA (H>22) CATCH
177 MPEC 2019-A194 2019 AS9 2019-01-12 23:15:00 NEA (18>H>22) CATCH
178 MPEC 2019-A218 2019 AY9 2019-01-13 16:27:00 ✓ NEA (18>H>22) CATCH
179 MPEC 2019-B23 2011 BM45 2019-01-17 11:50:00 PHAg18 CATCH
180 MPEC 2019-B39 2019 AS13 2019-01-17 16:40:00 NEA (18>H>22) CATCH
181 MPEC 2019-B49 DAILY ORBIT UPDATE (2019 JAN. 18 UT) 2019-01-18 13:09:00
182 MPEC 2019-B88 DAILY ORBIT UPDATE (2019 JAN. 26 UT) 2019-01-26 13:12:00
183 MPEC 2019-B115 DAILY ORBIT UPDATE (2019 JAN. 27 UT) 2019-01-27 13:16:00
184 MPEC 2019-C13 COMET P/2019 A2 (ATLAS) 2019-02-03 03:45:00 Comet CATCH
185 MPEC 2019-C115 DAILY ORBIT UPDATE (2019 FEB. 11 UT) 2019-02-11 13:08:00
186 MPEC 2019-D42 A/2019 C1 2019-02-27 22:47:00 Comet CATCH
187 MPEC 2019-E43 DAILY ORBIT UPDATE (2019 MAR. 5 UT) 2019-03-05 13:04:00
188 MPEC 2019-E76 DAILY ORBIT UPDATE (2019 MAR. 9 UT) 2019-03-09 13:12:00
189 MPEC 2019-E86 DAILY ORBIT UPDATE (2019 MAR. 12 UT) 2019-03-12 13:05:00
190 MPEC 2019-E97 DAILY ORBIT UPDATE (2019 MAR. 15 UT) 2019-03-15 12:11:00
191 MPEC 2019-F54 COMET C/2019 E3 (ATLAS) 2019-03-21 19:12:00 Comet CATCH
192 MPEC 2019-F106 DAILY ORBIT UPDATE (2019 MAR. 27 UT) 2019-03-27 12:05:00
193 MPEC 2019-F127 2019 FY 2019-03-29 15:50:00 NEA (H>22) CATCH
194 MPEC 2019-H04 DAILY ORBIT UPDATE (2019 APR. 16 UT) 2019-04-16 12:07:00
195 MPEC 2019-J92 DAILY ORBIT UPDATE (2019 MAY 11 UT) 2019-05-11 12:05:00
196 MPEC 2019-J93 DAILY ORBIT UPDATE (2019 MAY 12 UT) 2019-05-12 12:05:00
197 MPEC 2019-J142 OBSERVATIONS AND ORBITS OF COMETS 2019-05-15 14:22:00 Comet CATCH
198 MPEC 2019-K06 DAILY ORBIT UPDATE (2019 MAY 18 UT) 2019-05-18 12:27:00
199 MPEC 2019-O106 2019 OP1 2019-07-29 12:41:00 NEA (H>22) CATCH
200 MPEC 2019-O141 2019 OQ3 2019-07-31 12:34:00 NEA (H>22) CATCH
201 MPEC 2019-Q77 2019 QZ1 2019-08-26 12:26:00 ✓ NEA (H>22) CATCH
202 MPEC 2019-Q147 2019 QD6 2019-08-31 12:19:00 PHAg18 CATCH
203 MPEC 2019-R19 2019 QW7 2019-09-03 15:26:00 Unusual CATCH
204 MPEC 2019-R74 2019 QK8 2019-09-08 21:38:00 Unusual CATCH
205 MPEC 2019-S71 DAILY ORBIT UPDATE (2019 September 24) 2019-09-24 12:00:00
206 MPEC 2019-T117 DAILY ORBIT UPDATE (2019 October 7) 2019-10-07 12:22:00
207 MPEC 2019-T166 DAILY ORBIT UPDATE (2019 October 9) 2019-10-09 12:00:00
208 MPEC 2019-T193 DAILY ORBIT UPDATE (2019 October 10) 2019-10-10 12:01:00
209 MPEC 2019-U275 2019 UF12 2019-10-30 16:06:00 NEA (H>22) CATCH
210 MPEC 2019-V63 DAILY ORBIT UPDATE (2019 November 5) 2019-11-05 12:04:00
211 MPEC 2019-V110 2019 VB4 2019-11-07 03:32:00 ✓ NEA (H>22) CATCH
212 MPEC 2019-V142 DAILY ORBIT UPDATE (2019 November 10) 2019-11-10 12:03:00
213 MPEC 2019-W153 2019 WR2 2019-11-27 02:30:00 NEA (18>H>22) CATCH
214 MPEC 2019-Y01 DAILY ORBIT UPDATE (2019 December 16) 2019-12-16 12:08:00
215 MPEC 2020-B11 DAILY ORBIT UPDATE (2020 January 19) 2020-01-19 12:03:00
216 MPEC 2020-C108 2020 CU1 2020-02-06 14:56:00 NEA (H>22) CATCH
217 MPEC 2020-C111 COMET C/2020 B3 (Rankin) 2020-02-06 20:06:00 Comet CATCH
218 MPEC 2020-C127 2020 CD2 2020-02-10 08:20:00 NEA (18>H>22) CATCH
219 MPEC 2020-C133 DAILY ORBIT UPDATE (2020 February 13) 2020-02-13 12:05:00
220 MPEC 2020-D62 DAILY ORBIT UPDATE (2020 February 19) 2020-02-19 15:01:00
221 MPEC 2020-D130 2020 DZ3 2020-02-28 21:04:00 NEA (H>22) CATCH
222 MPEC 2020-E13 2016 RF40 2020-03-04 15:00:00 NEA (18>H>22) CATCH
223 MPEC 2020-E29 2020 EH 2020-03-07 13:47:00 NEA (18>H>22) CATCH
224 MPEC 2020-E30 2020 EJ 2020-03-07 13:51:00 NEA (H>22) CATCH
225 MPEC 2020-F58 COMET C/2017 U7 (PANSTARRS) 2020-03-19 02:30:00 Comet CATCH
226 MPEC 2020-V70 DAILY ORBIT UPDATE (2020 November 11) 2020-11-11 12:07:00
227 MPEC 2020-Y51 DAILY ORBIT UPDATE (2020 December 19) 2020-12-19 12:30:00
228 MPEC 2021-C200 DAILY ORBIT UPDATE (2021 February 11) 2021-02-11 12:12:00
229 MPEC 2021-D26 DAILY ORBIT UPDATE (2021 February 18) 2021-02-18 12:22:00
230 MPEC 2021-E133 DAILY ORBIT UPDATE (2021 March 13) 2021-03-13 12:04:00
231 MPEC 2021-F20 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-03-18 05:58:00 Comet CATCH
232 MPEC 2021-G08 DAILY ORBIT UPDATE (2021 April 2) 2021-04-02 12:03:00
233 MPEC 2021-H100 DAILY ORBIT UPDATE (2021 April 20) 2021-04-20 12:21:00
234 MPEC 2021-L113 DAILY ORBIT UPDATE (2021 June 10) 2021-06-10 12:06:00
235 MPEC 2021-N06 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2021-07-02 04:55:00 Comet CATCH
236 MPEC 2021-N72 2021 ND2 2021-07-09 21:30:00 NEA (18>H>22) CATCH
237 MPEC 2021-N112 2012 UU68 2021-07-13 14:00:00 NEA (H>22) CATCH
238 MPEC 2021-N120 2021 NR5 2021-07-14 13:19:00 NEA (H>22) CATCH
239 MPEC 2021-N121 2021 NS5 2021-07-14 13:34:00 NEA (18>H>22) CATCH
240 MPEC 2021-N128 DAILY ORBIT UPDATE (2021 July 15) 2021-07-15 12:06:00
241 MPEC 2021-N130 2006 LA 2021-07-15 14:06:00 NEA (18>H>22) CATCH
242 MPEC 2021-O29 DAILY ORBIT UPDATE (2021 July 20) 2021-07-20 12:09:00
243 MPEC 2021-Q41 2021 PH27 2021-08-21 04:38:00 NEAl18 CATCH
244 MPEC 2021-R54 DAILY ORBIT UPDATE (2021 September 4) 2021-09-04 12:18:00
245 MPEC 2021-R195 DAILY ORBIT UPDATE (2021 September 10) 2021-09-10 12:05:00
246 MPEC 2021-Y47 DAILY ORBIT UPDATE (2021 December 21) 2021-12-21 12:03:00
247 MPEC 2022-C56 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2022-02-04 04:24:00 Comet CATCH
248 MPEC 2022-F48 2022 FD1 2022-03-25 11:24:00 NEA (H>22) CATCH
249 MPEC 2022-M111 DAILY ORBIT UPDATE (2022 June 30) 2022-06-30 12:01:00
250 MPEC 2022-O17 DAILY ORBIT UPDATE (2022 July 21) 2022-07-21 12:01:00
251 MPEC 2022-U218 COMET C/2022 QE78 (ATLAS) 2022-10-24 05:13:00 Comet CATCH
252 MPEC 2022-W171 DAILY ORBIT UPDATE (2022 November 25) 2022-11-25 12:19:00
253 MPEC 2023-C44 COMET C/2023 B2 (ATLAS) 2023-02-07 00:32:00 Comet CATCH
254 MPEC 2023-L13 DAILY ORBIT UPDATE (2023 June 3) 2023-06-03 12:06:00
255 MPEC 2023-L19 COMET C/2023 K1 (ATLAS) 2023-06-05 19:31:00 Comet CATCH
256 MPEC 2023-O40 DAILY ORBIT UPDATE (2023 July 20) 2023-07-20 12:07:00
257 MPEC 2023-T226 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2023-10-14 00:34:00 Comet CATCH
258 MPEC 2023-U59 DAILY ORBIT UPDATE (2023 October 18) 2023-10-18 12:34:00
259 MPEC 2023-U276 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2023-10-29 08:53:00 Comet CATCH
260 MPEC 2024-D102 COMET C/2023 X7 (PANSTARRS) 2024-02-22 00:20:00 Comet CATCH
261 MPEC 2024-R67 DAILY ORBIT UPDATE (2024 September 4) 2024-09-04 12:08:00
262 MPEC 2024-R83 2024 OZ14 2024-09-05 16:50:00 ✓ Unusual CATCH
263 MPEC 2024-R266 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2024-09-11 20:19:00 Comet CATCH
264 MPEC 2024-V97 COMET C/2024 T5 (ATLAS) 2024-11-07 19:13:00 Comet CATCH
265 MPEC 2025-B186 DAILY ORBIT UPDATE (2025 January 31) 2025-01-31 12:25:00
266 MPEC 2025-C158 COMET P/2025 C1 (ATLAS) 2025-02-10 16:56:00 Comet CATCH
267 MPEC 2025-F22 COMET C/2025 D6 (ATLAS) 2025-03-20 17:15:00 Comet CATCH
268 MPEC 2025-M120 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-06-26 16:33:00 Comet CATCH
269 MPEC 2025-M132 COMET C/2025 M1 (PANSTARRS) 2025-06-27 14:27:00 Comet CATCH
270 MPEC 2025-N22 Comet 3I/ATLAS 2025-07-03 15:33:00 Comet CATCH
271 MPEC 2025-O40 Comet 3I/ATLAS 2025-07-21 17:46:00 Comet CATCH
272 MPEC 2025-R69 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-09-09 19:18:00 Comet CATCH
273 MPEC 2025-S35 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-09-16 19:04:00 Comet CATCH
274 MPEC 2025-S53 DAILY ORBIT UPDATE (2025 September 17) 2025-09-17 12:13:00
275 MPEC 2025-S173 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2025-09-22 20:03:00 Comet CATCH

List of Observers

Observer Group Total MPECs
T.Lister 241
E.Gomez, J.Chatelain, S.Greenstreet, T.Lister 82
J.D.Armstrong 53
C.Holt, E.Gomez, J.Chatelain, S.Greenstreet, T.Lister 39
D.Bodewits, J.D.Armstrong, J.O.Teagarden, M.Micheli, T.Farnham, T.Lister 25
P.-J.Dekelver, W.Cuppens 24
P.Breitenstein 24
C.Holt, E.Gomez, J.Chatelain, M.Bannister, M.Knight, M.S.P.Kelley, M.Schwamb, Q.Ye, R.Kokotanekova, S.Greenstreet, T.Lister 17
D.Bodewits, T.Farnham, T.Lister 15
J.D.Armstrong, J.O.Teagarden 12
L.Conversi, M.Micheli, T.Santana-Ros 12
E.J.Christensen, S.M.Larson, T.Lister 10
A.Hale, C.Holt, E.Gomez, J.Chatelain, S.Greenstreet, T.Lister 10
A.Tedeschi, E.Gomez, J.Chatelain, S.Greenstreet, T.Lister 9
J.D.Armstrong, S.W.Ryden, Z.N.Teagarden 8
J.D.Armstrong, S.R.Moss 8
D.Bodewits, M.Micheli, T.Farnham, T.Lister 8
E.Gomez, I.Kosic, J.Chatelain, S.Greenstreet, T.Lister 8
W.Cuppens 6
D.Souami, F.Spoto, R.Mendez, S.Bouquillon, W.Thuillot 6
F.Ocana, L.Conversi, M.Micheli, T.Santana-Ros 6
A.Hale 4
J.D.Armstrong, L.J.Faber, S.M.Gilbertson 4
M.E.Devlin, M.S.Devlin 3
E.Gomez, J.MacFarlane, S.Greenstreet, T.Lister 3
E.Gomez, L.Buzzi, P.Miller, R.Holmes, R.Miles, S.Foglia, T.Linder 2
Individual Observer Total MPECs
T.Lister 467
E.Gomez 170
S.Greenstreet 168
J.Chatelain 165
J.D.Armstrong 110
C.Holt 66
M.Micheli 51
D.Bodewits 48
T.Farnham 48
J.O.Teagarden 37
W.Cuppens 30
P.-J.Dekelver 24
P.Breitenstein 24
L.Conversi 18
T.Santana-Ros 18
M.Bannister 17
M.Knight 17
M.S.P.Kelley 17
M.Schwamb 17
Q.Ye 17
R.Kokotanekova 17
A.Hale 14
E.J.Christensen 10
S.M.Larson 10
A.Tedeschi 9
S.W.Ryden 8
Z.N.Teagarden 8
S.R.Moss 8
I.Kosic 8
D.Souami 6
F.Spoto 6
R.Mendez 6
S.Bouquillon 6
W.Thuillot 6
F.Ocana 6
L.J.Faber 4
S.M.Gilbertson 4
M.E.Devlin 3
M.S.Devlin 3
J.MacFarlane 3
L.Buzzi 2
P.Miller 2
R.Holmes 2
R.Miles 2
S.Foglia 2
T.Linder 2

List of Measurers

Measurer Group Total MPECs
T.Lister 173
M.Micheli 27
J.D.Armstrong, J.O.Teagarden, T.Lister 25
P.-J.Dekelver 24
A.Hale, T.Lister 10
B.Shappee, J.Prieto, K.Stanek 9
C.Barache, F.Taris, S.Bouquillon, T.Carlucci, W.Thuillot 6
A.Tedeschi, T.Lister 5
J.D.Armstrong, S.W.Ryden, Z.N.Teagarden 4
A.Tedeschi 4
A.C.Sumerlin, L.E.Probst 4
D.J.Asher 3
L.Buzzi, S.Foglia 2
Individual Measurer Total MPECs
T.Lister 213
J.D.Armstrong 29
M.Micheli 27
J.O.Teagarden 25
P.-J.Dekelver 24
A.Hale 10
A.Tedeschi 9
B.Shappee 9
J.Prieto 9
K.Stanek 9
C.Barache 6
F.Taris 6
S.Bouquillon 6
T.Carlucci 6
W.Thuillot 6
S.W.Ryden 4
Z.N.Teagarden 4
A.C.Sumerlin 4
L.E.Probst 4
D.J.Asher 3
L.Buzzi 2
S.Foglia 2

List of Facilities

Facilities Count
1.0-m f/8 Ritchey-Chretien + CCD 375
1.0-m reflector + CCD 9
1.0-m f/8.0 Ritchey-Chretien + CCD 110
0.14-m refractor + CCD 9
1.0-m Ritchey-Chretien + CCD 24
1.0-m f/8 reflector + CCD 4
1.0-m f/8 modified Ritchey-Chretien + CCD 40
1.0-m f/8 Schmidt-Cassegrain + CCD 4
1.0-m f/8.0 Ritchey-Chretien + 4096x4096 CCD, 1.0-m f/8 Schmidt-Cassegrain + CCD 10
4096x4096 CCD 39