463 Sommers-Bausch Observatory, Boulder
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 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2024 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2023 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
| 2022 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2021 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2020 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
| 2019 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2018 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2017 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2016 | 2 | 0 | 0 | 0 | 2 | 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 2016-O412 DAILY ORBIT UPDATE (2016 JULY 31 UT) | 2016-07-31 12:03:00 | ||||
| 2 | MPEC 2016-P110 DAILY ORBIT UPDATE (2016 AUG. 13 UT) | 2016-08-13 12:05:00 | ||||
| 3 | MPEC 2017-P08 DAILY ORBIT UPDATE (2017 AUG. 2 UT) | 2017-08-02 12:03:00 | ||||
| 4 | MPEC 2018-O46 DAILY ORBIT UPDATE (2018 JULY 26 UT) | 2018-07-26 12:03:00 | ||||
| 5 | MPEC 2020-O85 DAILY ORBIT UPDATE (2020 July 24) | 2020-07-24 12:22:00 | ||||
| 6 | MPEC 2020-O113 DAILY ORBIT UPDATE (2020 July 26) | 2020-07-26 12:24:00 | ||||
| 7 | MPEC 2021-J210 DAILY ORBIT UPDATE (2021 May 14) | 2021-05-14 12:10:00 | ||||
| 8 | MPEC 2022-O17 DAILY ORBIT UPDATE (2022 July 21) | 2022-07-21 12:01:00 | ||||
| 9 | MPEC 2023-O40 DAILY ORBIT UPDATE (2023 July 20) | 2023-07-20 12:07:00 | ||||
| 10 | MPEC 2023-O48 DAILY ORBIT UPDATE (2023 July 21) | 2023-07-21 12:08:00 | ||||
| 11 | MPEC 2024-O09 DAILY ORBIT UPDATE (2024 July 17) | 2024-07-17 12:03:00 | ||||
| 12 | MPEC 2025-O82 DAILY ORBIT UPDATE (2025 July 25) | 2025-07-25 12:14:00 |
Objects Observed by This Station (34 total)
| Object | Observations | Discoveries | First Obs | Last Obs | Magnitude | MPECs |
|---|---|---|---|---|---|---|
| 01627 | 40365 | 0 | 2018-07-01 | 2023-07-12 | 16.7 | 1495 |
| 01866 | 39725 | 0 | 2016-07-08 | 2024-07-11 | 17.9 | 1135 |
| 07889 | 18073 | 0 | 2015-07-16 | 2025-07-11 | 17.8 | 583 |
| 01980 | 11349 | 0 | 2017-07-01 | 2017-07-24 | 18.6 | 873 |
| F4244 | 8487 | 0 | 2016-07-07 | 2023-07-10 | 22.5 | 369 |
| 03102 | 6840 | 0 | 2022-06-28 | 2022-07-17 | 18.2 | 456 |
| 04183 | 6810 | 0 | 2015-07-12 | 2015-07-28 | 16.7 | 681 |
| 16960 | 6426 | 0 | 2025-06-30 | 2025-07-13 | 19.6 | 459 |
| 04055 | 5999 | 0 | 2015-07-19 | 2020-07-10 | 16.6 | 857 |
| 66251 | 5940 | 0 | 2022-06-28 | 2022-07-14 | 17.7 | 495 |
| 13553 | 5678 | 0 | 2018-07-01 | 2018-07-19 | 19.8 | 334 |
| J0166 | 5505 | 0 | 2017-07-01 | 2017-07-23 | 21.9 | 367 |
| 06569 | 5268 | 0 | 2022-06-22 | 2022-07-12 | 19.9 | 439 |
| 20460 | 3938 | 0 | 2017-06-29 | 2017-07-07 | 18.9 | 358 |
| K11E78D | 3380 | 0 | 2023-06-25 | 2023-07-17 | 21.0 | 169 |
| Q3976 | 3234 | 0 | 2025-06-27 | 2025-07-11 | 17.8 | 154 |
| H5189 | 2772 | 0 | 2023-06-21 | 2023-07-14 | 16.5 | 198 |
| 27031 | 2737 | 0 | 2023-06-21 | 2023-07-17 | 17.0 | 161 |
| b7732 | 2478 | 0 | 2022-06-22 | 2022-07-17 | 20.5 | 118 |
| m1032 | 2340 | 0 | 2024-06-24 | 2024-07-11 | 17.9 | 117 |
| D8846 | 2249 | 0 | 2017-07-05 | 2017-07-24 | 20.9 | 173 |
| 85275 | 2060 | 0 | 2020-07-10 | 2020-07-21 | 18.0 | 412 |
| 07482 | 1776 | 0 | 2022-06-23 | 2022-07-17 | 18.9 | 296 |
| P7838 | 1599 | 0 | 2016-07-14 | 2016-07-27 | 22.0 | 123 |
| E2561 | 1551 | 0 | 2017-07-05 | 2017-07-23 | 21.3 | 141 |
| N6716 | 1410 | 0 | 2023-06-21 | 2023-07-12 | 17.1 | 94 |
| 10150 | 1070 | 0 | 2016-07-12 | 2016-07-19 | 20.9 | 214 |
| 40329 | 840 | 0 | 2016-07-14 | 2016-07-28 | 19.3 | 105 |
| 06063 | 780 | 0 | 2017-07-14 | 2017-07-18 | 21.1 | 195 |
| u0563 | 576 | 0 | 2022-06-28 | 2022-07-12 | 21.5 | 64 |
| g0302 | 552 | 0 | 2020-07-10 | 2020-07-10 | 16.2 | 184 |
| l7885 | 237 | 0 | 2020-07-09 | 2020-07-10 | 21.8 | 79 |
| Y8400 | 212 | 0 | 2015-07-30 | 2015-07-30 | 17.7 | 212 |
| k8448 | 72 | 0 | 2016-07-18 | 2016-07-18 | 21.1 | 72 |
List of Observers
| Observer Group | Total MPECs |
|---|---|
| Unknown | 12 |
| Individual Observer | Total MPECs |
|---|---|
| Unknown | 12 |
List of Measurers
| Measurer Group | Total MPECs |
|---|---|
| Unknown | 12 |
| Individual Measurer | Total MPECs |
|---|---|
| Unknown | 12 |
List of Facilities
| Facilities | Count |
|---|---|
| Unknown | 12 |