MPEC 2020-W171 : 2020 WZ4
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M.P.E.C. 2020-W171 Issued 2020 November 27, 06:32 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 WZ4
Observations:
K20W04Z C2020 11 17.46189 09 00 41.49 -03 10 19.2 19.4 GVEW171703
K20W04Z C2020 11 17.46718 09 00 23.08 -03 10 10.8 19.3 GVEW171703
K20W04Z C2020 11 17.47248 09 00 04.81 -03 10 04.8 18.8 GVEW171703
K20W04Z* C2020 11 25.23149705 23 42.21 -00 22 41.4 VEW171G96
K20W04Z C2020 11 25.23669005 23 38.76 -00 22 37.4 19.27GVEW171G96
K20W04Z C2020 11 25.24187505 23 35.29 -00 22 33.9 19.27GVEW171G96
K20W04Z C2020 11 25.24705905 23 31.89 -00 22 30.2 19.06GVEW171G96
K20W04Z KC2020 11 25.30432 05 22 53.86 -00 21 47.0 18.7 RoEW171691
K20W04Z KC2020 11 25.33976 05 22 30.24 -00 21 21.2 18.9 RoEW171691
K20W04Z C2020 11 25.35938605 22 17.13 -00 21 08.6 19.22GVEW171I52
K20W04Z C2020 11 25.35957305 22 17.04 -00 21 08.0 19.19GVEW171I52
K20W04Z C2020 11 25.36042205 22 16.43 -00 21 07.2 19.15GVEW171I52
K20W04Z KC2020 11 25.85548905 17 35.15 -00 15 42.6 19.1 GVEW171L01
K20W04Z KC2020 11 25.85678305 17 34.39 -00 15 41.9 19.2 GVEW171L01
K20W04Z KC2020 11 25.85938205 17 32.89 -00 15 39.9 19.3 GVEW171L01
K20W04Z KC2020 11 25.86198005 17 31.39 -00 15 38.3 19.3 GVEW171L01
K20W04Z KC2020 11 25.86393305 17 30.24 -00 15 37.1 19.3 GVEW171L01
K20W04Z 1C2020 11 25.89802 05 17 10.05 -00 15 20.2 VEW171246
K20W04Z 1C2020 11 25.89823 05 17 09.90 -00 15 20.0 VEW171246
K20W04Z 1C2020 11 25.89844 05 17 09.77 -00 15 20.2 VEW171246
K20W04Z 1C2020 11 25.89865 05 17 09.69 -00 15 19.3 VEW171246
K20W04Z 1C2020 11 25.90394 05 17 06.54 -00 15 15.5 VEW171246
K20W04Z 1C2020 11 25.90421 05 17 06.45 -00 15 15.8 19.8 GVEW171246
K20W04Z 1C2020 11 25.90449 05 17 06.23 -00 15 15.8 VEW171246
K20W04Z 1C2020 11 25.90477 05 17 06.04 -00 15 15.6 19.6 GVEW171246
K20W04Z KC2020 11 25.93573 05 16 48.30 -00 14 48.2 19.2 GVEW171595
K20W04Z KC2020 11 25.94374 05 16 43.59 -00 14 43.9 19.4 GVEW171595
K20W04Z KC2020 11 25.95148 05 16 39.04 -00 14 37.8 19.4 GVEW171595
K20W04Z KC2020 11 25.98254405 16 22.06 -00 14 29.4 19.4 GVEW171Z99
K20W04Z KC2020 11 25.98660505 16 19.71 -00 14 26.3 19.5 GVEW171Z99
K20W04Z KC2020 11 25.99066005 16 17.39 -00 14 23.5 19.5 GVEW171Z99
K20W04Z KC2020 11 25.99643605 16 13.31 -00 14 07.1 19.1 GVEW171203
K20W04Z KC2020 11 26.01947305 15 59.93 -00 13 51.4 18.9 GVEW171203
K20W04Z KC2020 11 26.09965 05 15 13.93 -00 12 57.4 VEW171204
K20W04Z KC2020 11 26.10429 05 15 11.32 -00 12 54.2 VEW171204
K20W04Z KC2020 11 26.10892 05 15 08.68 -00 12 51.3 19.2 GVEW171204
K20W04Z KC2020 11 26.17046905 14 47.26 -00 11 44.4 VEW171I52
K20W04Z KC2020 11 26.17281805 14 45.99 -00 11 42.8 VEW171I52
K20W04Z KC2020 11 26.17751805 14 43.33 -00 11 39.6 18.87GVEW171I52
K20W04Z KC2020 11 26.20998905 14 24.79 -00 11 23.1 19.1 VqEW171858
K20W04Z KC2020 11 26.21821205 14 20.21 -00 11 17.7 19.5 VqEW171858
K20W04Z KC2020 11 26.22641505 14 15.63 -00 11 12.4 19.2 VqEW171858
K20W04Z KC2020 11 27.09358605 07 10.30 -00 02 18.1 19.5 GVEW171K38
K20W04Z KC2020 11 27.11078905 07 02.16 -00 02 07.8 19.7 GVEW171K38
K20W04Z KC2020 11 27.13061805 06 52.77 -00 01 55.2 19.6 GVEW171K38
K20W04Z KC2020 11 27.16913105 06 46.39 -00 01 08.1 19.16GVEW171I52
K20W04Z KC2020 11 27.17012005 06 45.86 -00 01 07.9 20.16GVEW171I52
K20W04Z KC2020 11 27.17111005 06 45.44 -00 01 06.7 19.49GVEW171I52
Observer details:
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + CCD.
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.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
691 Steward Observatory, Kitt Peak-Spacewatch. Observer T. H. Bressi. 0.9-m
f/3 reflector + CCD.
703 Catalina Sky Survey. Observer H. Groeller. Measurers D. Rankin, B. Gray,
F. C. Shelly. 1.5-m reflector + 10K CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + 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 D. Rankin, K. W.
Wierzchos. 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.
K38 M57 Observatory, Saltrio. Observer G. Baj. 0.3-m f/5.5 Ritchey-Chretien
+ 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.
Z99 Clixby Observatory, Cleethorpes. Observer A. Mickleburgh. 0.36-m f/8
Schmidt-Cassegrain + CCD.
Orbital elements:
2020 WZ4 Earth MOID = 0.0017 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 76.23994 (2000.0) P Q
n 0.82955533 Peri. 94.35707 +0.83061369 +0.55035430
a 1.1217751 Node 232.27537 -0.54391917 +0.76923789
e 0.3404848 Incl. 6.15460 -0.11930147 +0.32462781
P 1.19 H 24.4 G 0.15 U 7
Residuals in seconds of arc
201117 703 0.1- 0.4- 201125 L01 0.1+ 0.2- 201126 203 0.2+ 0.2-
201117 703 0.9- 0.8+ 201125 246 0.2+ 0.5- 201126 204 0.0 0.2+
201117 703 1.0+ 0.4- 201125 246 0.2- 0.5- 201126 204 0.2+ 0.3+
201125 G96 0.2+ 0.2+ 201125 246 0.3- 0.8- 201126 204 0.2- 0.1+
201125 G96 0.1+ 0.4+ 201125 246 0.3+ 0.1- 201126 I52 (1.7+ 0.4-)
201125 G96 0.3- 0.1+ 201125 246 0.7- 0.1+ 201126 I52 (1.9+ 0.3-)
201125 G96 0.3+ 0.0 201125 246 0.3+ 0.4- 201126 I52 0.7+ 0.2-
201125 691 0.1- 0.3+ 201125 246 0.5- 0.6- 201126 858 0.2+ 0.2+
201125 691 0.4- 0.4+ 201125 246 0.9- 0.5- 201126 858 0.1+ 0.2+
201125 I52 0.1+ 0.2- 201125 595 0.5+ 0.6+ 201126 858 0.0 0.0
201125 I52 0.6+ 0.3+ 201125 595 0.2+ 0.5- 201127 K38 0.4- 0.2+
201125 I52 0.1- 0.5+ 201125 595 0.1- 0.3+ 201127 K38 0.6+ 0.1-
201125 L01 0.1+ 0.1+ 201125 Z99 0.4- 0.2- 201127 K38 0.5+ 0.4+
201125 L01 0.0 0.1- 201125 Z99 0.6- 0.2+ 201127 I52 0.3+ 0.1+
201125 L01 0.1+ 0.1+ 201125 Z99 0.4- 0.2+ 201127 I52 0.8- 0.3-
201125 L01 0.3+ 0.1- 201125 203 0.1- 0.3- 201127 I52 0.2- 0.3+
Ephemeris:
2020 WZ4 a,e,i = 1.12, 0.34, 6 q = 0.7398
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 10 28 15 01 55.9 -02 31 03 0.1252 0.8744 16.7 161.0 30.9
...
2020 11 12 13 05 35.9 -02 55 26 0.03674 0.9595 33.7 145.1 24.7
...
2020 11 20 07 05 08.3 -01 56 52 0.03100 1.0065 125.8 52.8 18.8
...
2020 11 26 05 16 11.1 -00 12 22 0.06103 1.0417 153.0 25.4 19.6
2020 11 27 05 07 56.0 -00 01 42 0.06672 1.0475 154.8 23.6 19.7
2020 11 28 05 00 57.5 +00 08 07 0.07251 1.0533 156.2 22.2 19.9
...
2020 12 04 04 34 54.2 +00 58 38 0.1089 1.0877 158.7 19.2 20.7
...
2020 12 12 04 19 30.5 +02 02 46 0.1611 1.1324 154.8 21.8 21.8
...
2020 12 27 04 12 24.4 +04 18 37 0.2709 1.2110 143.1 29.2 23.3
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-W171
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