U63 Burnt Tree Hill Observatory, Cle Elum

Last update: UTC 2026-02-28 08:33:18

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
2026 0 0 0 0 0 0 0 0 0 0
2025 18 0 0 0 5 0 0 0 11 2
2024 5 0 0 0 3 0 0 0 2 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 13 0 2 1 8 0 0 0 2 0
2019 12 0 0 0 6 0 0 0 6 0
2018 13 0 0 1 9 0 0 0 3 0
2017 3 0 0 0 3 0 0 0 0 0
2016 1 0 0 0 1 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-X98 DAILY ORBIT UPDATE (2016 DEC. 15 UT) 2016-12-15 13:06:00
2 MPEC 2017-P44 DAILY ORBIT UPDATE (2017 AUG. 13 UT) 2017-08-13 12:04:00
3 MPEC 2017-V04 DAILY ORBIT UPDATE (2017 NOV. 1 UT) 2017-11-01 12:07:00
4 MPEC 2017-V07 DAILY ORBIT UPDATE (2017 NOV. 3 UT) 2017-11-03 12:07:00
5 MPEC 2018-F37 DAILY ORBIT UPDATE (2018 MAR. 19 UT) 2018-03-19 12:03:00
6 MPEC 2018-J76 DAILY ORBIT UPDATE (2018 MAY 14 UT) 2018-05-14 12:06:00
7 MPEC 2018-L07 DAILY ORBIT UPDATE (2018 JUNE 4 UT) 2018-06-04 12:02:00
8 MPEC 2018-M99 DAILY ORBIT UPDATE (2018 JUNE 26 UT) 2018-06-26 12:03:00
9 MPEC 2018-P10 DAILY ORBIT UPDATE (2018 AUG. 5 UT) 2018-08-05 12:03:00
10 MPEC 2018-Q38 DAILY ORBIT UPDATE (2018 AUG. 19 UT) 2018-08-19 12:04:00
11 MPEC 2018-R08 DAILY ORBIT UPDATE (2018 SEPT. 3 UT) 2018-09-03 12:11:00
12 MPEC 2018-S25 2018 RP8 2018-09-18 02:49:00 NEA (18>H>22) CATCH
13 MPEC 2018-S50 OBSERVATIONS AND ORBITS OF COMETS 2018-09-21 00:29:00 Comet CATCH
14 MPEC 2018-U37 2018 UA1 2018-10-20 21:57:00 PHAg18 CATCH
15 MPEC 2018-U53 2018 UQ1 2018-10-22 10:30:00 PHAg18 CATCH
16 MPEC 2018-V150 DAILY ORBIT UPDATE (2018 NOV. 11 UT) 2018-11-11 13:07:00
17 MPEC 2018-W52 DAILY ORBIT UPDATE (2018 NOV. 25 UT) 2018-11-25 13:05:00
18 MPEC 2019-A217 DAILY ORBIT UPDATE (2019 JAN. 13 UT) 2019-01-13 13:36:00
19 MPEC 2019-H29 COMET C/2019 F2 (ATLAS) 2019-04-22 01:49:00 Comet CATCH
20 MPEC 2019-H41 2019 HD 2019-04-22 04:14:00 NEA (18>H>22) CATCH
21 MPEC 2019-J117 2019 JU5 2019-05-12 18:45:00 NEA (H>22) CATCH
22 MPEC 2019-J142 OBSERVATIONS AND ORBITS OF COMETS 2019-05-15 14:22:00 Comet CATCH
23 MPEC 2019-N63 DAILY ORBIT UPDATE (2019 July 5) 2019-07-05 12:12:00
24 MPEC 2019-O75 DAILY ORBIT UPDATE (2019 July 27) 2019-07-27 20:04:00
25 MPEC 2019-O81 DAILY ORBIT UPDATE (2019 July 28) 2019-07-28 13:49:00
26 MPEC 2019-P37 2019 PA 2019-08-05 03:07:00 NEA (18>H>22) CATCH
27 MPEC 2019-Q95 DAILY ORBIT UPDATE (2019 August 28) 2019-08-28 12:01:00
28 MPEC 2019-Q135 OBSERVATIONS AND ORBITS OF COMETS 2019-08-30 13:34:00 Comet CATCH
29 MPEC 2019-S39 DAILY ORBIT UPDATE (2019 September 22) 2019-09-22 12:11:00
30 MPEC 2020-F83 DAILY ORBIT UPDATE (2020 March 23) 2020-03-23 12:06:00
31 MPEC 2020-L32 DAILY ORBIT UPDATE (2020 June 8) 2020-06-08 12:01:00
32 MPEC 2020-M29 2020 MK 2020-06-19 04:38:00 NEA (H>22) CATCH
33 MPEC 2020-O30 COMET C/2020 M5 (ATLAS) 2020-07-19 21:40:00 Comet CATCH
34 MPEC 2020-O103 DAILY ORBIT UPDATE (2020 July 25) 2020-07-25 12:23:00
35 MPEC 2020-S129 2020 SR2 2020-09-21 03:58:00 NEA (H>22) CATCH
36 MPEC 2020-S146 2020 SA3 2020-09-21 20:27:00 NEA (H>22) CATCH
37 MPEC 2020-S154 DAILY ORBIT UPDATE (2020 September 22) 2020-09-22 12:09:00
38 MPEC 2020-T01 DAILY ORBIT UPDATE (2020 October 1) 2020-10-01 12:19:00
39 MPEC 2020-T04 DAILY ORBIT UPDATE (2020 October 2) 2020-10-02 12:21:00
40 MPEC 2020-T05 DAILY ORBIT UPDATE (2020 October 3) 2020-10-03 12:19:00
41 MPEC 2020-T13 DAILY ORBIT UPDATE (2020 October 6) 2020-10-06 12:22:00
42 MPEC 2020-U96 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS 2020-10-19 00:30:00 Comet CATCH
43 MPEC 2024-N153 DAILY ORBIT UPDATE (2024 July 15) 2024-07-15 12:01:00
44 MPEC 2024-O99 DAILY ORBIT UPDATE (2024 July 30) 2024-07-30 12:09:00
45 MPEC 2024-P76 DAILY ORBIT UPDATE (2024 August 6) 2024-08-06 12:06:00
46 MPEC 2024-Q02 2024 PE6 2024-08-16 01:47:00 NEA (18>H>22) CATCH
47 MPEC 2024-Q70 2024 QD1 2024-08-29 13:38:00 NEA (18>H>22) CATCH
48 MPEC 2025-O88 DAILY ORBIT UPDATE (2025 July 26) 2025-07-26 12:17:00
49 MPEC 2025-O100 DAILY ORBIT UPDATE (2025 July 27) 2025-07-27 12:18:00
50 MPEC 2025-O132 DAILY ORBIT UPDATE (2025 July 29) 2025-07-29 12:23:00
51 MPEC 2025-O154 2025 OS7 2025-07-31 02:55:00 NEA (H>22) CATCH
52 MPEC 2025-P53 2025 PE 2025-08-02 13:59:00 NEA (H>22) CATCH
53 MPEC 2025-P56 2025 OS13 2025-08-02 16:19:00 NEA (H>22) CATCH
54 MPEC 2025-P142 2025 PS1 2025-08-13 18:13:00 NEA (H>22) CATCH
55 MPEC 2025-Q92 2025 QU2 2025-08-22 13:55:00 NEA (H>22) CATCH
56 MPEC 2025-R80 DAILY ORBIT UPDATE (2025 September 13) 2025-09-13 12:04:00
57 MPEC 2025-S08 2025 RL3 2025-09-16 06:07:00 NEA (18>H>22) CATCH
58 MPEC 2025-S39 2025 SA 2025-09-17 02:36:00 NEA (H>22) CATCH
59 MPEC 2025-S82 2025 ST 2025-09-18 10:55:00 PHAg18 CATCH
60 MPEC 2025-S134 2025 SM2 2025-09-20 13:30:00 NEA (H>22) CATCH
61 MPEC 2025-S149 2025 SY2 2025-09-21 01:32:00 NEA (H>22) CATCH
62 MPEC 2025-S150 2025 SZ2 2025-09-21 01:39:00 NEA (H>22) CATCH
63 MPEC 2025-X72 DAILY ORBIT UPDATE (2025 December 9) 2025-12-09 12:17:00

Objects Observed by This Station

Object Observations Discoveries First Obs Last Obs Magnitude MPECs
K20S03A 48 12 2020-09-20 2020-09-20 18.6 12
K20S02R 12 3 2020-09-20 2020-09-20 19.8 3
03122 4560 0 2017-10-27 2017-10-29 18.0 912
23187 1324 0 2020-08-11 2020-08-11 18.0 331
07977 1284 0 2020-06-22 2020-06-22 20.6 321
K18E04J 1065 0 2018-05-13 2018-06-03 21.1 71
G2173 780 0 2020-09-21 2020-09-21 19.5 195
K13C89K 754 0 2019-08-28 2019-08-28 21.6 58
N7805 732 0 2019-09-21 2019-09-22 N/A 183
K19G03D 728 0 2019-07-05 2019-07-28 N/A 104
K20P05C 672 0 2020-09-21 2020-09-21 N/A 84
E4332 597 0 2018-08-04 2018-08-04 18.5 199
D6900 464 0 2020-08-14 2020-08-14 19.6 116
K10ED5C 448 0 2020-06-07 2020-06-07 18.6 112
K24K03H 400 0 2024-07-14 2024-07-29 22.3 50
k8448 292 0 2016-08-06 2016-08-07 22.0 73
K20D04M 288 0 2020-03-22 2020-03-22 19.1 48
K18L02Q 275 0 2018-09-02 2018-09-02 20.8 55
K19G03T 265 0 2019-09-22 2019-09-22 21.9 53
CK20M050 264 0 2020-07-19 2020-07-19 18.9 44
K18U01Q 245 0 2018-10-20 2018-10-20 N/A 35
q3815 238 0 2018-11-11 2018-11-11 16.8 34
CK19F020 224 0 2019-04-21 2019-04-21 17.2 14
K05R00B 200 0 2018-08-18 2018-08-18 18.7 50
K19P00A 195 0 2019-08-03 2019-08-03 21.9 39
S5990 188 0 2020-09-21 2020-09-21 21.2 47
CK17M040 175 0 2018-09-02 2018-09-02 16.6 35
K11A37A 175 0 2018-11-08 2018-11-08 19.0 25
K18S03A 175 0 2018-11-10 2018-11-10 N/A 25
K18U01A 168 0 2018-10-20 2018-10-20 N/A 21
CK17Y020 148 0 2020-06-26 2020-06-26 16.3 37
n6018 144 0 2017-07-23 2017-07-23 21.2 72
K24P06E 132 0 2024-08-15 2024-08-15 20.2 33
K18R08P 128 0 2018-09-17 2018-09-17 22.3 32
n6005 126 0 2017-10-28 2017-10-28 21.9 63
68347 105 0 2018-06-24 2018-06-24 N/A 35
K07C15H 104 0 2020-07-25 2020-07-25 18.6 26
K19H00D 95 0 2019-04-21 2019-04-21 18.9 19
K18F00B 80 0 2018-03-17 2018-03-17 18.5 16
K25P01J 75 0 2025-09-13 2025-09-13 20.2 25
K18E01P 68 0 2018-03-11 2018-03-11 19.5 17
K20O02J 68 0 2020-08-14 2020-08-14 18.8 17
K25P01S 60 0 2025-08-13 2025-08-13 22.5 12
n9490 60 0 2017-10-28 2017-10-28 19.6 30
K19J05U 55 0 2019-05-12 2019-05-12 22.4 11
K20M00K 48 0 2020-06-18 2020-06-18 21.3 12
K25O01J 39 0 2025-07-26 2025-07-26 19.6 13
K25R03L 39 0 2025-09-15 2025-09-15 22.3 13
K25O00W 33 0 2025-07-25 2025-07-25 19.8 11
K20M00Z 32 0 2020-06-22 2020-06-22 19.2 8
K24Q01D 30 0 2024-08-29 2024-08-29 23.2 10
K25N01W 30 0 2025-07-26 2025-07-26 21.7 10
K25S00T 30 0 2025-09-17 2025-09-17 18.1 10
K25S02Z 30 0 2025-09-20 2025-09-20 19.3 5
~00yn 30 0 2024-08-05 2024-08-05 19.8 6
K25Q02U 28 0 2025-08-21 2025-08-21 22.8 7
K25O02N 24 0 2025-07-29 2025-07-29 N/A 8
K25S02Y 24 0 2025-09-19 2025-09-20 22.5 8
K25P00E 21 0 2025-08-02 2025-08-02 19.0 7
CK19J030 18 0 2019-07-28 2019-07-28 18.5 6
K25O01N 18 0 2025-07-26 2025-07-26 22.0 6
K25O13S 18 0 2025-08-02 2025-08-02 20.2 6
K24O00O 12 0 2024-07-29 2024-07-29 18.9 3
K25S02M 12 0 2025-09-20 2025-09-20 19.8 4
K25O07S 8 0 2025-07-29 2025-07-29 24.9 2
K25S00A 4 0 2025-09-16 2025-09-16 21.3 1

List of Observers

Observer Group Total MPECs
Unknown 35
B.Van Deventer 25
B.Vandeventer, C.Zhai, M.Shao, N.Saini, R.Morrison, R.Trahan 3
Individual Observer Total MPECs
Unknown 35
B.Van Deventer 25
B.Vandeventer 3
C.Zhai 3
M.Shao 3
N.Saini 3
R.Morrison 3
R.Trahan 3

List of Measurers

Measurer Group Total MPECs
Unknown 63
Individual Measurer Total MPECs
Unknown 63

List of Facilities

Facilities Count
0.25-m Schmidt-Cassegrain + CCD 2
0.28-m f/2.2 reflector + CCD 3
0.3-m Schmidt + CCD 1
0.4-m Schmidt-Cassegrain + CCD 4
0.4-m f/10 SCT + CCD 12
0.4-m f/10 Schmidt-Cassegrain + CCD 4
0.4m SCT + CCD 1
Unknown 36