850 Cordell-Lorenz Observatory, Sewanee
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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2024 | 1 | 0 | 0 | 0 | 1 | 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 | 4 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2020 | 47 | 0 | 0 | 10 | 5 | 0 | 0 | 0 | 30 | 2 |
| 2019 | 99 | 0 | 0 | 16 | 9 | 0 | 0 | 0 | 72 | 2 |
| 2018 | 86 | 0 | 0 | 18 | 15 | 0 | 0 | 0 | 52 | 1 |
| 2017 | 67 | 0 | 0 | 20 | 11 | 0 | 0 | 0 | 36 | 0 |
| 2016 | 55 | 0 | 0 | 17 | 7 | 0 | 0 | 0 | 27 | 4 |
| 2015 | 40 | 0 | 0 | 13 | 7 | 0 | 0 | 0 | 18 | 2 |
| 2014 | 73 | 0 | 0 | 27 | 10 | 0 | 0 | 0 | 33 | 3 |
| 2013 | 55 | 0 | 0 | 25 | 14 | 0 | 0 | 0 | 15 | 1 |
| 2012 | 71 | 0 | 0 | 21 | 35 | 0 | 0 | 0 | 14 | 1 |
| 2011 | 39 | 0 | 0 | 18 | 7 | 0 | 0 | 0 | 12 | 2 |
| 2010 | 87 | 0 | 0 | 64 | 8 | 0 | 0 | 0 | 13 | 2 |
| 2009 | 126 | 0 | 0 | 81 | 20 | 0 | 0 | 0 | 20 | 5 |
| 2008 | 55 | 0 | 0 | 38 | 1 | 0 | 0 | 0 | 12 | 4 |
| 2007 | 144 | 0 | 0 | 112 | 12 | 0 | 0 | 0 | 16 | 4 |
| 2006 | 113 | 0 | 0 | 82 | 12 | 0 | 0 | 0 | 19 | 0 |
| 2005 | 50 | 0 | 0 | 30 | 10 | 0 | 0 | 0 | 10 | 0 |
| 2004 | 45 | 0 | 0 | 33 | 4 | 0 | 0 | 0 | 8 | 0 |
| 2003 | 45 | 0 | 0 | 35 | 3 | 0 | 0 | 0 | 7 | 0 |
| 2002 | 25 | 0 | 0 | 16 | 0 | 0 | 0 | 0 | 7 | 2 |
| 2001 | 17 | 0 | 0 | 9 | 2 | 0 | 0 | 0 | 6 | 0 |
| 2000 | 28 | 0 | 0 | 6 | 1 | 0 | 0 | 0 | 20 | 1 |
| 1999 | 10 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 3 | 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 2024-S84 DAILY ORBIT UPDATE (2024 September 26) | 2024-09-26 12:15:00 | ||||
| 2 | MPEC 2021-P47 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2021-08-06 07:05:00 | Comet | CATCH | ||
| 3 | MPEC 2021-L04 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2021-06-01 05:18:00 | Comet | CATCH | ||
| 4 | MPEC 2021-J28 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2021-05-03 06:02:00 | Comet | CATCH | ||
| 5 | MPEC 2021-A190 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2021-01-15 00:38:00 | Comet | CATCH | ||
| 6 | MPEC 2020-S188 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2020-09-25 02:49:00 | Comet | CATCH | ||
| 7 | MPEC 2020-R14 COMET C/2019 Q1 (Lemmon) | 2020-09-06 01:46:00 | Comet | CATCH | ||
| 8 | MPEC 2020-Q94 2020 QM1 | 2020-08-19 11:33:00 | NEA (18>H>22) | CATCH | ||
| 9 | MPEC 2020-Q23 2020 PM4 | 2020-08-16 18:10:00 | PHAg18 | CATCH | ||
| 10 | MPEC 2020-P19 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2020-08-04 23:06:00 | Comet | CATCH |
List of Observers
Observers | Count |
|---|---|
| D. T. Durig | 3097 |
| D. T. Durig, T. D. Polk | 4 |
| D. T. Durig, W. A. Beckelheimer | 4 |
| D. T. Durig, J. L. Wilson | 17 |
| D. T. Durig, R. F. Glass | 3 |
| D. T. Durig, A. D. McDermott | 2 |
| D. T. Durig, J. W. Barrett | 2 |
| D. T. Durig, J. A. K. Blackwood, K. R. Norfleet | 17 |
| D. T. Durig, J. A. K. Blackwood | 4 |
| D. T. Durig, W. C. Lewis | 3 |
List of Measurers
Measurers | Count |
|---|---|
| D. T. Durig, N. K. Smith | 3 |
| D. T. Durig, G. W. Hewitt | 3 |
| D. T. Durig | 305 |
| D. T. Durig, W. R. Sutherland | 3 |
| D. T. Durig, J. J. H. Hammond | 3 |
| D. T. Durig, T. Z. Flynn, R. A. Murray | 8 |
| D. T. Durig, A. B. Whitworth | 3 |
| D. T. Durig, B. J. Cade, D. N. Allen | 3 |
| D. T. Durig, J. C. Cockhren | 5 |
| D. T. Durig, S. L. Smith, E. F. Wolfe, F. B. Champion | 6 |
List of Facilities
Facilities | Count |
|---|---|
| 0.3-m f/5.7 Schmidt-Cassegrain + CCD | 8 |
| 0.3-m f/7 Schmidt-Cassegrain + CCD | 2 |
| 0.3-m f/5.75 Schmidt-Cassegrain + CCD | 501 |
| 0.3-m f/5.86 Schmidt-Cassegrain + CCD | 10 |
| 0.30-m f/5.86 Schmidt-Cassegrain + CCD | 234 |
| 0.35 m f/1.88 Schmidt + CCD | 4 |
| 0.30-m f/5.5 Schmidt-Cassegrain + CCD | 2 |
| 0.30-m f/5.9 Schmidt-Cassegrain + 1K CCD | 4 |
| 0.30-m f/5.89 Schmidt-Cassegrain + 1024 CCD | 7 |
| 0.30-m f/5.9 Schmidt-Cassegrain + CCD | 7 |