926 Tenagra II Observatory, Nogales
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 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
| 2024 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 |
| 2023 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 |
| 2022 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2021 | 2 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2020 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2019 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
| 2018 | 71 | 0 | 0 | 11 | 18 | 0 | 0 | 0 | 38 | 4 |
| 2017 | 1176 | 0 | 0 | 87 | 167 | 0 | 0 | 0 | 772 | 150 |
| 2016 | 1151 | 0 | 0 | 106 | 213 | 0 | 0 | 0 | 670 | 162 |
| 2015 | 674 | 0 | 0 | 81 | 160 | 0 | 0 | 0 | 365 | 68 |
| 2014 | 300 | 0 | 1 | 34 | 99 | 0 | 0 | 0 | 138 | 28 |
| 2013 | 261 | 0 | 2 | 50 | 96 | 0 | 0 | 0 | 105 | 8 |
| 2012 | 79 | 0 | 7 | 15 | 40 | 0 | 0 | 0 | 15 | 2 |
| 2011 | 67 | 0 | 1 | 10 | 26 | 0 | 0 | 0 | 23 | 7 |
| 2010 | 326 | 0 | 2 | 64 | 94 | 0 | 0 | 0 | 146 | 20 |
| 2009 | 239 | 0 | 0 | 29 | 62 | 0 | 0 | 0 | 108 | 40 |
| 2008 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2007 | 9 | 0 | 0 | 2 | 4 | 0 | 0 | 0 | 2 | 1 |
| 2006 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 |
| 2005 | 8 | 0 | 0 | 3 | 3 | 0 | 0 | 0 | 2 | 0 |
| 2004 | 204 | 0 | 0 | 29 | 88 | 0 | 0 | 0 | 73 | 14 |
| 2003 | 262 | 0 | 0 | 33 | 57 | 0 | 0 | 0 | 154 | 18 |
| 2002 | 118 | 0 | 0 | 17 | 28 | 0 | 0 | 0 | 58 | 15 |
| 2001 | 82 | 0 | 0 | 7 | 28 | 0 | 0 | 0 | 41 | 6 |
| 2000 | 1 | 0 | 0 | 0 | 1 | 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 |
|---|
Index | Name | Date/Time | Discoverer | First-responding Confirmer | Object Type | Search Archival Image |
|---|---|---|---|---|---|---|
| 1 | MPEC 2025-B186 DAILY ORBIT UPDATE (2025 January 31) | 2025-01-31 12:25:00 | ||||
| 2 | MPEC 2025-B14 DAILY ORBIT UPDATE (2025 January 19) | 2025-01-19 12:04:00 | ||||
| 3 | MPEC 2024-N153 DAILY ORBIT UPDATE (2024 July 15) | 2024-07-15 12:01:00 | ||||
| 4 | MPEC 2024-A158 DAILY ORBIT UPDATE (2024 January 14) | 2024-01-14 12:21:00 | ||||
| 5 | MPEC 2024-A151 DAILY ORBIT UPDATE (2024 January 13) | 2024-01-13 12:19:00 | ||||
| 6 | MPEC 2024-A05 DAILY ORBIT UPDATE (2024 January 1) | 2024-01-01 12:09:00 | ||||
| 7 | MPEC 2023-Y82 DAILY ORBIT UPDATE (2023 December 25) | 2023-12-25 12:06:00 | ||||
| 8 | MPEC 2023-X102 DAILY ORBIT UPDATE (2023 December 6) | 2023-12-06 12:29:00 | ||||
| 9 | MPEC 2023-U222 DAILY ORBIT UPDATE (2023 October 24) | 2023-10-24 12:11:00 | ||||
| 10 | MPEC 2023-T183 DAILY ORBIT UPDATE (2023 October 12) | 2023-10-12 13:01:00 |
List of Observers
Observers | Count |
|---|---|
| M. Schwartz | 177 |
| P. R. Holvorcem, C. W. Juels, M. Schwartz | 43 |
| P. R. Holvorcem, M. Schwartz | 3004 |
| M. Schwartz, P. R. Holvorcem | 14889 |
| P. R. Holvorcem, | 16 |
| P. R. Holvorcem | 6 |
| M. Schwart, P. R. Holvorcem | 4 |
| G. Masi, F. Mallia | 13 |
| M. E. Brown, L. Malcolm | 2 |
| M. Ory | 6 |
List of Measurers
Measurers | Count |
|---|---|
| P. R. Holvorcem | 1989 |
| C. A. Trujillo | 8 |
| L. Elenin | 13 |
| P. R. Holvorcem, L. Elenin | 16 |
| S. Abe | 210 |
| I. Robbins | 21 |
| M. Schwartz | 13056 |
| G. Masi | 9 |
| G. Masi, P. Holvorcem, M. Schwartz | 84 |
| G. Masi, P. Holvorcem | 33 |
List of Facilities
Facilities | Count |
|---|---|
| 0.5-m f/10 Ritchey-Chretien + CCD | 273 |
| 0.36-m f/11 Schmidt-Cassegrain + CCD | 48 |
| 0.81-m f/7 Ritchey-Chretien + CCD | 12803 |
| 0.36-m f/11 Schmidt-Cassegrain + CCD, 0.81-m f/7 Ritchey-Chretien + CCD | 21 |
| 0.36-m Tenagra IV reflector + CCD | 2 |
| 0.41-m f/3.75 astrograph + CCD | 2096 |
| 0.41-m f/3.75 astrograph + CCD, 0.81-m f/7 Ritchey-Chretien + CCD | 3180 |
| 0.81-m Ritchey-Chretien + CCD | 8 |
| 0.41-m Ritchey-Chretien + CCD, 0.41-m f/3.75 astrograph + CCD | 21 |
| 0.41-m Ritchey-Chretien + CCD | 3 |