MPEC 2021-B83 : 2020 WL1
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M.P.E.C. 2021-B83 Issued 2021 January 20, 03:41 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2020 WL1
Revision to MPEC 2020-W72
Additional Observations:
K20W01L C2008 01 11.28576 07 14 59.20 +17 40 31.8 19.0 VrEB083G96
K20W01L C2008 01 11.29182 07 14 58.88 +17 40 38.8 19.0 VrEB083G96
K20W01L C2008 01 11.29788 07 14 58.56 +17 40 45.3 18.8 VrEB083G96
K20W01L C2008 01 11.30398 07 14 58.27 +17 40 52.6 19.0 VrEB083G96
K20W01L C2008 02 09.11121 07 08 24.56 +24 19 30.9 20.5 VoEB083691
K20W01L C2008 02 09.13001 07 08 24.88 +24 19 40.7 20.8 VoEB083691
K20W01L C2008 02 09.14881 07 08 25.24 +24 19 50.1 20.6 VoEB083691
Observer details:
691 Steward Observatory, Kitt Peak-Spacewatch. Observer M. T. Read. 0.9-m
f/3 reflector + CCD.
G96 Mt. Lemmon Survey. Observer S. M. Larson. Measurers E. C. Beshore, A.
Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill, R. A.
Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector + CCD.
Orbital elements:
2020 WL1 Earth MOID = 0.2782 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 24.83731 (2000.0) P Q
n 0.38060859 Peri. 294.44142 +0.56122057 -0.82165061
a 1.8857480 Node 121.05135 +0.79523782 +0.50195487
e 0.3417516 Incl. 6.67680 +0.22940855 +0.27005847
P 2.59 H 20.0 G 0.15 U 3
Residuals in seconds of arc
080111 G96 0.3+ 0.4+ 201119 I52 0.2- 0.0 201214 G96 0.2+ 0.3-
080111 G96 0.1+ 0.5+ 201119 I52 0.0 0.1- 201214 G96 0.3+ 0.0
080111 G96 0.1- 0.1+ 201119 I52 0.4- 0.2- 201214 G96 0.0 0.2+
080111 G96 0.2+ 0.5+ 201122 I52 0.0 0.0 201217 I52 0.1- 0.1+
080209 691 0.4- 0.2+ 201122 I52 0.1+ 0.1+ 201217 I52 0.3- 0.3-
080209 691 0.5- 0.2+ 201122 I52 0.1- 0.3- 201217 I52 0.1+ 0.7-
080209 691 0.1+ 0.1- 201123 I52 0.4- 0.0 201217 I52 0.1+ 0.1+
201116 F51 0.1+ 0.1- 201123 I52 0.2- 0.0 201223 F52 0.1+ 0.1-
201116 F51 0.1- 0.0 201123 I52 0.6- 0.9+ 201223 F52 0.1- 0.2+
201116 F51 0.1+ 0.0 201126 I52 0.2+ 0.2- 201223 F52 0.2- 0.0
201117 711 0.3- 0.7+ 201126 I52 0.0 0.7- 201223 F52 0.0 0.1+
201117 711 0.5- 0.4+ 201126 I52 0.1- 0.2- 210105 I52 0.2+ 0.4-
201117 711 0.3- 0.4+ 201129 I52 (1.8- 0.4-) 210105 I52 0.2- 0.0
201117 H36 0.1- 0.1- 201129 I52 0.6+ 0.3- 210110 G96 0.3- 0.0
201117 H36 0.6+ 0.2- 201129 I52 0.2+ 0.2- 210110 G96 0.3- 0.1-
201117 H36 0.5+ 0.7- 201129 I52 0.0 0.0 210110 G96 0.5- 0.0
201118 L01 0.2+ 0.1- 201202 I52 0.4- 0.0 210110 G96 0.3- 0.1+
201118 L01 0.5- 0.1- 201202 I52 0.9- 0.4+ 210116 F51 0.0 0.0
201118 L01 0.3+ 0.0 201209 807 0.3+ 0.3- 210116 F51 0.0 0.0
201118 H21 0.1- 0.3+ 201209 807 0.3+ 0.7+ 210116 F51 0.1+ 0.0
201118 H21 0.2+ 0.4+ 201210 807 0.1+ 0.2- 210116 F51 0.1+ 0.0
201118 H21 0.4+ 0.4+ 201210 807 0.2- 0.3- 210118 G96 0.1- 0.0
201118 711 0.3- 0.5- 201210 807 0.1+ 0.5- 210118 G96 0.1+ 0.1-
201118 711 0.3- 1.0+ 201211 F51 0.1- 0.0 210118 G96 0.3+ 0.0
201118 711 0.7- 0.2- 201211 F51 0.0 0.0 210118 G96 0.1+ 0.1-
201119 H21 1.1+ 0.0 201211 F51 0.0 0.0
201119 H21 0.8+ 0.1- 201214 G96 0.3+ 0.2-
Ephemeris:
2020 WL1 a,e,i = 1.89, 0.34, 7 q = 1.2413
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 12 21 09 42 00.4 +10 02 14 0.5596 1.3818 124.8 35.8 20.9
...
2021 01 05 09 43 06.6 +12 45 31 0.5367 1.4397 140.8 25.6 20.6
...
2021 01 13 09 38 30.5 +14 44 42 0.5343 1.4727 150.7 19.1 20.5
...
2021 01 19 09 33 06.1 +16 22 16 0.5389 1.4983 158.5 13.9 20.3
2021 01 20 09 32 04.4 +16 38 47 0.5402 1.5026 159.8 13.1 20.3
2021 01 21 09 31 01.0 +16 55 18 0.5418 1.5069 161.1 12.2 20.3
...
2021 01 27 09 24 12.4 +18 32 52 0.5551 1.5332 168.9 7.1 20.2
...
2021 02 04 09 14 39.7 +20 32 10 0.5840 1.5687 175.6 2.7 20.1
...
2021 02 19 08 59 43.4 +23 15 11 0.6734 1.6366 159.6 12.2 20.9
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-B83
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