MPEC 2021-C218 : 2020 YQ4
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M.P.E.C. 2021-C218 Issued 2021 February 11, 15:10 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 YQ4
Revision to MPEC 2020-Y144
Additional Observations:
K20Y04Q C2018 07 04.34483216 58 34.619-15 42 52.88 21.52GVEC218F51
K20Y04Q C2018 07 04.35644816 58 33.288-15 43 07.61 21.35GVEC218F51
K20Y04Q C2018 07 04.36791616 58 32.000-15 43 21.95 21.56GVEC218F51
K20Y04Q C2018 07 04.37945516 58 30.687-15 43 36.46 21.36GVEC218F51
K20Y04Q C2018 07 12.33766816 45 35.934-18 28 21.21 22.14GVEC218F51
K20Y04Q C2018 07 12.34814816 45 34.976-18 28 34.06 22.32GVEC218F51
K20Y04Q C2018 07 12.35863316 45 34.036-18 28 46.70 21.80GVEC218F51
K20Y04Q C2018 07 12.36913416 45 33.089-18 28 59.50 21.92GVEC218F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
Orbital elements:
2020 YQ4 Earth MOID = 0.1448 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 32.55805 (2000.0) P Q
n 0.58803720 Peri. 322.04114 +0.44836771 -0.81613741
a 1.4110190 Node 98.53919 +0.88345840 +0.34262369
e 0.2266934 Incl. 21.63065 +0.13589576 +0.46532648
P 1.68 H 20.7 G 0.15 U 3
Residuals in seconds of arc
180704 F51 0.0 0.0 201224 G96 0.0 0.8+ 210107 G96 0.2+ 0.1-
180704 F51 0.1- 0.1- 201224 G96 0.7+ 0.1- 210107 G96 0.7- 0.8-
180704 F51 0.0 0.0 201224 G96 0.3+ 0.1- 210107 G96 0.2+ 0.2-
180704 F51 0.0 0.0 201226 G96 0.1- 0.3- 210116 I52 0.4+ 0.2+
180712 F51 0.1+ 0.1+ 201226 G96 0.5+ 0.1- 210116 I52 0.1- 0.4+
180712 F51 0.1- 0.0 201226 G96 0.1+ 0.5- 210116 I52 0.1+ 0.1+
180712 F51 0.0 0.0 201227 L01 0.5- 0.7- 210116 I52 0.1+ 0.3-
180712 F51 0.0 0.1- 201227 L01 0.1+ 0.1+ 210201 I52 0.2+ 0.1-
201223 G96 0.1+ 0.3+ 201227 L01 0.5+ 0.2+ 210201 I52 0.1+ 0.1-
201223 G96 0.2- 0.1+ 210106 I52 1.4- 1.1+ 210201 I52 0.3+ 0.3+
201223 G96 0.2- 0.2+ 210106 I52 0.2- 0.0 210207 I52 0.3+ 0.2+
201223 V06 0.1- 0.1- 210106 I52 0.2- 0.2- 210207 I52 0.7- 0.0
201223 V06 0.1- 0.0 210106 I52 0.3- 0.4-
201223 V06 0.1- 0.1+ 210107 G96 0.6+ 0.0
Ephemeris:
2020 YQ4 a,e,i = 1.41, 0.23, 22 q = 1.0912
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 12 12 40 58.9 +29 39 08 0.4850 1.2462 111.6 47.2 21.4
...
2021 01 27 13 08 57.0 +38 46 26 0.4937 1.2952 118.5 41.9 21.4
...
2021 02 04 13 17 33.1 +43 23 49 0.5056 1.3220 121.5 39.5 21.4
...
2021 02 10 13 20 26.9 +46 36 35 0.5177 1.3422 123.2 38.0 21.4
2021 02 11 13 20 36.5 +47 07 01 0.5200 1.3456 123.5 37.7 21.4
2021 02 12 13 20 40.4 +47 36 53 0.5224 1.3490 123.7 37.5 21.5
...
2021 02 18 13 19 02.3 +50 22 50 0.5384 1.3692 124.8 36.3 21.5
...
2021 02 26 13 11 33.2 +53 21 51 0.5640 1.3958 125.6 35.2 21.6
...
2021 03 13 12 44 36.2 +56 16 14 0.6248 1.4447 124.8 34.4 21.9
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-C218
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