MPEC 2020-W159 : 2020 WR4
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M.P.E.C. 2020-W159 Issued 2020 November 25, 23:43 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 WR4
Observations:
K20W04R* C2020 11 24.19377503 53 21.93 +06 51 56.2 20.66GVEW159G96
K20W04R C2020 11 24.19889503 53 24.28 +06 52 16.0 20.54GVEW159G96
K20W04R C2020 11 24.20404303 53 26.68 +06 52 35.4 VEW159G96
K20W04R C2020 11 24.20916103 53 29.00 +06 52 54.6 20.18GVEW159G96
K20W04R KC2020 11 24.26011103 53 52.31 +06 56 12.1 20.51GVEW159I52
K20W04R KC2020 11 24.26212903 53 53.30 +06 56 20.0 20.49GVEW159I52
K20W04R KC2020 11 24.26414903 53 54.24 +06 56 28.0 20.82GVEW159I52
K20W04R KC2020 11 24.26616403 53 55.09 +06 56 36.2 20.76GVEW159I52
K20W04R KC2020 11 24.37842 03 54 47.12 +07 03 51.3 20.7 RoEW159691
K20W04R KC2020 11 24.39320 03 54 54.12 +07 04 48.3 20.4 RoEW159691
K20W04R KC2020 11 24.40797 03 55 01.18 +07 05 45.2 21.0 RoEW159691
K20W04R KC2020 11 24.86863203 59 21.45 +07 36 31.0 20.3 GVEW159L01
K20W04R KC2020 11 24.88171103 59 28.28 +07 37 27.2 20.2 GVEW159L01
K20W04R KC2020 11 24.88560903 59 30.30 +07 37 43.8 20.3 GVEW159L01
K20W04R 1C2020 11 25.01222 04 00 36.61 +07 46 36.3 VEW159246
K20W04R 1C2020 11 25.01306 04 00 37.08 +07 46 38.8 VEW159246
K20W04R 1C2020 11 25.01330 04 00 37.25 +07 46 40.7 VEW159246
K20W04R 1C2020 11 25.01354 04 00 37.38 +07 46 41.3 VEW159246
K20W04R 1C2020 11 25.01403 04 00 37.59 +07 46 43.9 VEW159246
K20W04R KC2020 11 25.21504904 02 43.40 +08 02 03.0 19.62GVEW159I52
K20W04R KC2020 11 25.21603504 02 43.96 +08 02 07.4 19.75GVEW159I52
K20W04R KC2020 11 25.21701904 02 44.51 +08 02 11.6 19.85GVEW159I52
K20W04R KC2020 11 25.21971104 02 45.94 +08 02 23.6 19.93GVEW159I52
K20W04R KC2020 11 25.87376 04 09 38.56 +08 52 49.2 VEW159204
K20W04R HC2020 11 25.88914 04 09 48.11 +08 54 05.9 20.4 GVEW159204
K20W04R 1C2020 11 25.89079 04 09 48.21 +08 54 06.7 VEW159246
K20W04R 1C2020 11 25.89162 04 09 48.74 +08 54 12.1 VEW159246
K20W04R 1C2020 11 25.89216 04 09 49.03 +08 54 13.8 VEW159246
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
246 Klet Observatory-KLENOT. Observers M. Tichy, J. Ticha. Measurer M.
Tichy. 1.06-m f/2.7 reflector + 2048x2048 CCD.
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. Observers R. A. Kowalski, D.
Rankin. 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.
Measurers D. Pujagic, K. Korlevic. 1.0-m f/2.9 reflector + CCD.
Orbital elements:
2020 WR4 Earth MOID = 0.0137 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 357.48049 (2000.0) P Q
n 0.37024851 Peri. 25.81112 -0.12293438 -0.98998651
a 1.9207633 Node 71.31432 +0.89736737 -0.14074476
e 0.4906622 Incl. 4.20025 +0.42381476 +0.01084526
P 2.66 H 26.1 G 0.15 U 7
Residuals in seconds of arc
201124 G96 0.2+ 0.0 201124 691 0.3+ 0.2+ 201125 I52 0.3+ 0.0
201124 G96 0.0 0.0 201124 L01 0.4- 0.1+ 201125 I52 0.5+ 0.2-
201124 G96 0.4+ 0.5- 201124 L01 0.2- 0.6+ 201125 I52 0.0 0.4-
201124 G96 0.1- 1.1- 201124 L01 0.3- 0.5+ 201125 204 0.3+ 0.0
201124 I52 0.6- 0.5- 201125 246 0.8- 0.8+ 201125 204 0.2+ 0.0
201124 I52 0.4+ 0.4- 201125 246 0.5- 0.3- 201125 246 0.1+ 0.9-
201124 I52 0.6+ 0.2- 201125 246 0.2+ 0.6+ 201125 246 0.3+ 0.4+
201124 I52 0.4- 0.2+ 201125 246 0.2+ 0.2+ 201125 246 0.4- 0.6-
201124 691 0.2+ 0.4+ 201125 246 0.6- 0.7+
201124 691 0.2+ 0.3+ 201125 I52 0.1- 0.1+
Ephemeris:
2020 WR4 a,e,i = 1.92, 0.49, 4 q = 0.9783
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 10 26 02 43 12.9 +00 11 58 0.2086 1.1961 164.1 13.2 23.9
...
2020 11 10 02 58 44.6 +00 32 56 0.1227 1.1084 163.4 14.8 22.6
...
2020 11 18 03 18 29.0 +02 35 19 0.08314 1.0683 163.0 15.7 21.7
...
2020 11 24 03 51 39.4 +06 40 57 0.05637 1.0421 166.0 13.2 20.7
2020 11 25 04 00 32.0 +07 47 31 0.05225 1.0381 167.0 12.3 20.5
2020 11 26 04 10 58.1 +09 05 04 0.04827 1.0342 168.1 11.3 20.3
...
2020 12 02 06 13 52.2 +21 47 00 0.02980 1.0133 156.7 22.6 19.6
...
2020 12 10 11 01 12.9 +25 18 35 0.03714 0.9926 101.1 76.8 21.6
...
2020 12 25 13 07 40.4 +14 51 55 0.09476 0.9784 84.2 90.3 24.1
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-W159
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