MPEC 2020-W145 : 2020 WB4
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M.P.E.C. 2020-W145 Issued 2020 November 24, 20:44 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 WB4
Observations:
K20W04B* C2020 11 24.21112904 05 27.55 +14 48 46.6 21.31GVEW145G96
K20W04B C2020 11 24.21627104 05 27.39 +14 48 54.5 20.26GVEW145G96
K20W04B C2020 11 24.22141004 05 27.29 +14 49 02.0 20.77GVEW145G96
K20W04B C2020 11 24.22653404 05 27.18 +14 49 09.7 21.40GVEW145G96
K20W04B KC2020 11 24.35190604 05 23.20 +14 52 03.0 20.46GVEW145I52
K20W04B KC2020 11 24.35593504 05 23.10 +14 52 05.4 20.11GVEW145I52
K20W04B KC2020 11 24.35996204 05 22.97 +14 52 13.6 20.37GVEW145I52
K20W04B KC2020 11 24.36398904 05 22.83 +14 52 18.7 20.39GVEW145I52
K20W04B KC2020 11 24.41809 04 05 21.52 +14 53 30.2 20.8 RoEW145691
K20W04B KC2020 11 24.42906 04 05 21.35 +14 53 44.2 21.4 RoEW145691
K20W04B KC2020 11 24.44004 04 05 21.16 +14 53 57.3 20.8 RoEW145691
K20W04B KC2020 11 24.81989204 05 42.41 +15 02 50.6 20.6 GVEW145L01
K20W04B pC2020 11 24.82456004 05 42.37 +15 02 58.0 20.8 GVEW145L01
K20W04B KC2020 11 24.82923604 05 42.27 +15 03 06.1 20.4 GVEW145L01
K20W04B KC2020 11 24.83393604 05 42.24 +15 03 13.4 20.6 GVEW145L01
Observer details:
691 Steward Observatory, Kitt Peak-Spacewatch. Observer T. H. Bressi. 0.9-m
f/3 reflector + CCD.
G96 Mt. Lemmon Survey. Observer D. C. Fuls. Measurers E. J. Christensen, G.
A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A.
Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m
reflector + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, V. Dobos, D. Pujagic,
I. Lyon. Measurers D. Pujagic, K. Korlevic. 1.0-m f/2.9 reflector + CCD.
Orbital elements:
2020 WB4 Earth MOID = 0.0035 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Pike
M 339.46863 (2000.0) P Q
n 0.59489316 Peri. 72.03354 -0.76255430 -0.64499438
a 1.4001570 Node 67.77003 +0.57126117 -0.70758044
e 0.4289801 Incl. 3.09210 +0.30359778 -0.28863848
P 1.66 H 26.61 G 0.15 U 9
Residuals in seconds of arc
201124 G96 0.1+ 0.4- 201124 I52 0.1+ 2.5- 201124 691 0.1+ 0.4-
201124 G96 0.4- 0.0+ 201124 I52 0.0- 0.4+ 201124 L01 0.4+ 0.4+
201124 G96 0.0+ 0.1+ 201124 I52 0.3- 0.2+ 201124 L01 0.4+ 0.1-
201124 G96 0.4+ 0.4+ 201124 691 0.3- 0.2+ 201124 L01 0.5- 0.2+
201124 I52 0.2- 0.4+ 201124 691 0.2+ 0.3+ 201124 L01 0.3- 0.4-
Ephemeris:
2020 WB4 a,e,i = 1.40, 0.43, 3 q = 0.7995
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 10 25 03 55 48.4 +12 59 21 0.2873 1.2541 151.3 22.4 25.5
...
2020 11 09 04 02 12.7 +13 01 46 0.1663 1.1512 163.8 13.9 23.8
...
2020 11 17 04 03 51.4 +13 25 23 0.1087 1.0960 170.1 8.9 22.6
...
2020 11 23 04 05 00.5 +14 25 49 0.06793 1.0550 173.6 6.0 21.4
2020 11 24 04 05 18.6 +14 44 57 0.06129 1.0483 174.0 5.6 21.1
2020 11 25 04 05 41.1 +15 09 04 0.05468 1.0415 174.4 5.3 20.8
...
2020 12 01 04 15 26.7 +24 49 47 0.01578 1.0018 175.6 4.3 18.0
...
2020 12 09 15 57 31.8 -06 05 35 0.03689 0.9511 23.1 156.0 29.1
...
2020 12 24 16 06 19.4 -11 10 12 0.1385 0.8691 31.9 143.3 29.3
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-W145
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