689 U.S. Naval Observatory, Flagstaff

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 0 0 0 0 0 0 0 0 0 0
2024 0 0 0 0 0 0 0 0 0 0
2023 0 0 0 0 0 0 0 0 0 0
2022 0 0 0 0 0 0 0 0 0 0
2021 0 0 0 0 0 0 0 0 0 0
2020 0 0 0 0 0 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 2 0 0 0 2 0 0 0 0 0
2013 0 0 0 0 0 0 0 0 0 0
2012 2 0 0 1 1 0 0 0 0 0
2011 1 0 0 0 1 0 0 0 0 0
2010 0 0 0 0 0 0 0 0 0 0
2009 6 0 0 0 6 0 0 0 0 0
2008 1 0 0 0 1 0 0 0 0 0
2007 6 0 0 0 3 0 0 0 2 1
2006 0 0 0 0 0 0 0 0 0 0
2005 0 0 0 0 0 0 0 0 0 0
2004 1 0 0 0 1 0 0 0 0 0
2003 3 0 0 0 3 0 0 0 0 0
2002 3 0 0 0 3 0 0 0 0 0
2001 1 0 0 0 1 0 0 0 0 0
2000 1 0 0 0 1 0 0 0 0 0
1999 1 0 0 0 1 0 0 0 0 0
1998 4 0 0 0 4 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 2 0 0 0 0 0 0 0 1 1
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 1995-E11 1994 TB 1995-03-10 15:47:00 ✓ Unusual CATCH
2 MPEC 1998-O22 DAILY ORBIT UPDATE (1998 JULY 29 UT) 1998-07-29 06:07:00
3 MPEC 1998-R22 DAILY ORBIT UPDATE (1998 SEPT. 11 UT) 1998-09-11 06:00:00
4 MPEC 1998-U32 DAILY ORBIT UPDATE (1998 OCT. 31 UT) 1998-10-31 07:09:00
5 MPEC 1998-Y36 DAILY ORBIT UPDATE (1998 DEC. 29 UT) 1998-12-29 07:06:00
6 MPEC 1999-A12 DAILY ORBIT UPDATE (1999 JAN. 9 UT) 1999-01-09 06:59:00
7 MPEC 2000-F08 DAILY ORBIT UPDATE (2000 MAR. 17 UT) 2000-03-17 07:16:00
8 MPEC 2001-F27 DAILY ORBIT UPDATE (2001 MAR. 22 UT) 2001-03-22 07:18:00
9 MPEC 2002-B09 DAILY ORBIT UPDATE (2002 JAN. 18 UT) 2002-01-18 07:10:00
10 MPEC 2002-O36 DAILY ORBIT UPDATE (2002 JULY 23 UT) 2002-07-23 06:07:00
11 MPEC 2002-Q42 DAILY ORBIT UPDATE (2002 AUG. 29 UT) 2002-08-29 06:07:00
12 MPEC 2003-B04 DAILY ORBIT UPDATE (2003 JAN. 17 UT) 2003-01-17 07:10:00
13 MPEC 2003-E10 DAILY ORBIT UPDATE (2003 MAR. 4 UT) 2003-03-04 07:07:00
14 MPEC 2003-T08 DAILY ORBIT UPDATE (2003 OCT. 2 UT) 2003-10-02 06:07:00
15 MPEC 2004-T01 DAILY ORBIT UPDATE (2004 OCT. 1 UT) 2004-10-01 06:10:00
16 MPEC 2007-W18 DAILY ORBIT UPDATE (2007 NOV. 18 UT) 2007-11-18 07:15:00
17 MPEC 2007-W19 DAILY ORBIT UPDATE (2007 NOV. 19 UT) 2007-11-19 07:15:00
18 MPEC 2007-W21 2007 VW266 2007-11-19 12:13:00 Unusual CATCH
19 MPEC 2007-W41 2007 WY3 2007-11-19 18:12:00 ✓ NEAl18 CATCH
20 MPEC 2007-W42 DAILY ORBIT UPDATE (2007 NOV. 20 UT) 2007-11-20 07:10:00
21 MPEC 2008-M21 DAILY ORBIT UPDATE (2008 JUNE 20 UT) 2008-06-20 06:06:00
22 MPEC 2009-D34 DAILY ORBIT UPDATE (2009 FEB. 20 UT) 2009-02-20 07:07:00
23 MPEC 2009-P03 DAILY ORBIT UPDATE (2009 AUG. 1 UT) 2009-08-01 06:08:00
24 MPEC 2009-P49 DAILY ORBIT UPDATE (2009 AUG. 15 UT) 2009-08-15 06:06:00
25 MPEC 2009-R01 DAILY ORBIT UPDATE (2009 SEPT. 1 UT) 2009-09-01 06:08:00
26 MPEC 2009-T40 DAILY ORBIT UPDATE (2009 OCT. 13 UT) 2009-10-13 06:08:00
27 MPEC 2009-X20 DAILY ORBIT UPDATE (2009 DEC. 8 UT) 2009-12-08 07:08:00
28 MPEC 2011-K10 DAILY ORBIT UPDATE (2011 MAY 20 UT) 2011-05-20 07:06:00
29 MPEC 2012-O15 DAILY ORBIT UPDATE (2012 JULY 21 UT) 2012-07-21 06:02:00
30 MPEC 2012-O25 OBSERVATIONS AND ORBITS OF COMETS 2012-07-23 01:21:00 Comet CATCH
31 MPEC 2014-L37 DAILY ORBIT UPDATE (2014 JUNE 7 UT) 2014-06-07 12:02:00
32 MPEC 2014-M44 DAILY ORBIT UPDATE (2014 JUNE 26 UT) 2014-06-26 12:02:00

Objects Observed by This Station (51 total)

Object Observations Discoveries First Obs Last Obs Magnitude MPECs
01036 181480 0 2000-01-08 2012-02-01 10.8 1396
00433 170026 0 2000-06-06 2012-05-01 10.2 1126
01627 77740 0 2000-01-08 2004-01-23 16.7 1495
01620 28046 0 2000-12-20 2001-11-19 18.0 758
01866 21565 0 2002-01-11 2003-06-06 17.9 1135
0103P 20482 0 2010-03-25 2011-03-13 21.6 133
01685 19968 0 2000-02-01 2002-05-14 14.7 768
01916 16160 0 2001-07-28 2001-10-28 16.0 505
01980 15714 0 2001-04-01 2006-07-24 18.6 873
01943 13549 0 2001-12-18 2002-02-19 19.1 797
01864 7660 0 2001-12-18 2002-02-04 17.5 766
0009P 7524 0 2008-10-25 2010-06-10 22.3 198
01865 1456 0 2001-07-22 2001-08-25 17.2 364
01580 1384 0 2002-04-24 2002-05-29 18.5 346
0008P 990 0 2007-09-08 2007-10-19 16.9 66
0190P 902 0 2007-09-09 2007-12-04 19.9 41
A1955 658 0 2012-03-23 2012-03-25 21.2 47
J98P00G 166 0 1998-10-20 1998-11-06 18.8 83
J98K02U 162 0 1998-10-01 1998-10-08 19.3 81
K07VD7W 145 0 2007-11-18 2007-11-19 19.3 29
K07L19Q 144 0 2007-11-19 2007-11-19 21.3 48
K07VO3O 144 0 2007-11-17 2007-11-19 20.0 16
K07VI9G 132 0 2007-11-19 2007-11-19 N/A 66
K07W03Q 99 0 2007-11-19 2007-11-19 21.4 33
J98M05X 92 0 1998-08-04 1998-08-04 N/A 92
K07W00B 90 0 2007-11-18 2007-11-19 N/A 15
K07W03V 90 0 2007-11-19 2007-11-19 20.8 45
K05L39W 84 0 2007-11-19 2007-11-19 20.4 28
K07W03Y 84 0 2007-11-19 2007-11-19 17.8 28
K07VD8C 78 0 2007-11-18 2007-11-18 20.7 26
K00E14D 75 0 2000-03-14 2000-03-15 20.5 25
K07VI4K 72 0 2007-11-19 2007-11-19 21.9 24
J98M00Q 71 0 1998-11-19 1998-11-19 N/A 71
K07U01Y 67 0 2007-11-19 2007-11-19 18.7 67
K03Y94Q 63 0 2007-11-18 2007-11-18 20.7 21
K07T65R 58 0 2007-11-18 2007-11-18 18.6 29
K07S02V 56 0 2007-11-18 2007-11-18 21.6 28
K07S00J 54 0 2007-11-18 2007-11-18 19.0 27
K07U13Q 51 0 2007-11-19 2007-11-19 22.1 17
J98M03E 50 0 1998-07-13 1998-07-13 19.9 50
J98S49S 43 0 1998-11-01 1998-11-01 18.4 43
K05G00L 42 0 2007-11-18 2007-11-18 22.1 14
K07VO3P 42 0 2007-11-17 2007-11-18 N/A 14
K07W03M 36 0 2007-11-19 2007-11-19 19.3 12
K07V30Z 35 0 2007-11-18 2007-11-19 21.5 7
J94T00B 24 0 1994-10-13 1994-10-28 21.9 4
K07T18Z 22 0 2007-11-19 2007-11-19 21.0 22
K07VO3N 12 0 2007-11-18 2007-11-18 20.8 6
K07VJ1E 10 0 2007-11-19 2007-11-19 18.5 10
K07V03B 6 0 2007-11-19 2007-11-19 N/A 3
K07VQ6W 3 0 2007-11-18 2007-11-18 N/A 1

List of Observers

Observer Group Total MPECs
Unknown 28
C.E.Albert, J.Munn 2
C.Dahn 1
H.Harris, T.Tilleman 1
Individual Observer Total MPECs
Unknown 28
C.E.Albert 2
J.Munn 2
C.Dahn 1
H.Harris 1
T.Tilleman 1

List of Measurers

Measurer Group Total MPECs
Unknown 28
A.P.Haviland, A.Zarco, E.E.Arthur, J.A.Larsen, J.L.Carlson, J.N.Rosa, N.A.Bailey, W.C.Navarro 2
A.Monet, H.Harris 1
H.Harris 1
Individual Measurer Total MPECs
Unknown 28
H.Harris 2
A.P.Haviland 2
A.Zarco 2
E.E.Arthur 2
J.A.Larsen 2
J.L.Carlson 2
J.N.Rosa 2
N.A.Bailey 2
W.C.Navarro 2
A.Monet 1

List of Facilities

Facilities Count
1.5-m astrometric reflector 1
1.55-m f/10.0 reflector + CCD 1
1.55-m f/9.8 reflector + CCD 2
Unknown 28