MPEC 2021-C135 : 2019 WR2
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M.P.E.C. 2021-C135 Issued 2021 February 9, 15:02 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
2019 WR2
Revision to MPEC 2019-W153
Additional Observations:
K19W02R C2015 11 30.32463801 51 41.603-27 08 49.56 22.35GVEC135F51
K19W02R C2015 11 30.33496301 51 40.606-27 08 34.04 20.52GVEC135F51
K19W02R C2016 01 29.25595901 47 02.288+08 54 18.80 22.08GVEC135F51
K19W02R C2016 01 29.26260001 47 02.732+08 54 35.16 21.98GVEC135F51
K19W02R C2016 01 29.26927301 47 03.177+08 54 51.71 22.65GVEC135F51
K19W02R C2016 01 29.27595001 47 03.631+08 55 07.57 22.30GVEC135F51
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.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
151130 F51 18.0+ 8.7+ 160129 F51 5.7+ 23.0+ MPO546167 +0.00 days
Orbital elements:
2019 WR2 Earth MOID = 0.2404 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 85.55396 (2000.0) P Q
n 0.25718787 Peri. 46.46055 -0.49046985 -0.70607200
a 2.4488888 Node 79.98130 +0.57173099 -0.70306543
e 0.5424475 Incl. 31.24475 +0.65769522 +0.08462471
P 3.83 H 19.3 G 0.15 U 0
Residuals in seconds of arc
151130 F51 0.2+ 0.4- 191126 Q62 0.1+ 0.5- 191220 I52 0.3- 0.2-
151130 F51 0.1- 0.0 191126 Q62 0.1- 0.4+ 191220 I52 0.0 0.1-
160129 F51 0.1+ 0.1- 191126 033 0.1+ 0.3+ 191221 I52 0.1- 0.1+
160129 F51 0.1+ 0.0 191127 033 0.4- 0.1- 191221 I52 0.1- 0.2-
160129 F51 0.0 0.3+ 191129 204 0.1- 0.2+ 191221 I52 0.2- 0.1-
160129 F51 0.1+ 0.1- 191129 204 0.1+ 0.2+ 191221 I52 0.1+ 0.1+
191124 G96 0.0 0.1+ 191129 204 0.1- 0.2+ 191229 I41 1.2+ 0.4+
191124 G96 0.2+ 0.1+ 191130 G40 0.2+ 0.1+ 191229 I41 1.2+ 0.4+
191124 G96 0.1+ 0.1+ 191130 G40 0.9+ 0.4+ 191229 I41 1.1+ 0.4+
191124 H01 0.1+ 0.1+ 191130 G40 0.9+ 0.2+ 191229 I41 1.1+ 0.5+
191124 H01 0.0 0.1+ 191201 H45 0.4- 0.7- 200101 I41 0.9+ 0.1+
191124 H01 0.0 0.1+ 191201 H45 0.3- 0.5- 200101 I41 1.0+ 0.2+
191124 H01 0.0 0.0 191201 H45 0.5- 0.4- 200101 I41 0.8+ 0.1+
191125 K88 0.3- 0.4+ 191201 H45 0.5- 0.4- 200101 I41 0.9+ 0.3+
191125 K88 0.2- 0.3+ 191201 H45 0.6- 0.2- 200103 I52 0.2+ 0.2-
191125 K88 0.2- 0.5+ 191201 H45 1.0- 0.2- 200103 I52 0.1- 0.0
191125 L04 0.2+ 0.2- 191203 703 1.8+ 0.1+ 200103 I52 0.1+ 0.2-
191125 L04 0.4- 0.4- 191203 703 0.6+ 0.1+ 200103 I52 0.1- 0.2+
191125 L01 0.0 0.0 191203 703 0.7+ 0.0 200107 H45 0.5- 0.1+
191125 L01 0.1- 0.1- 191204 246 0.4+ 0.1- 200107 H45 1.1- 0.1+
191125 L01 0.1- 0.4+ 191204 246 0.2+ 0.2+ 200107 H45 0.8- 0.1-
191125 L01 0.0 0.1+ 191204 246 0.7+ 0.2+ 200107 H45 0.9- 0.4+
191125 L01 0.1- 0.1+ 191204 246 0.3- 0.1+ 200107 H45 0.1- 0.1-
191125 L01 0.0 0.2- 191204 246 0.2+ 0.5- 200107 H45 0.6- 0.1+
191125 L01 0.0 0.2+ 191204 246 0.2- 0.2+ 200125 703 0.8- 0.3+
191125 I52 0.5+ 0.5- 191204 246 0.5+ 0.2- 200125 703 0.6+ 0.1-
191125 I52 0.5+ 0.2- 191205 K87 0.2+ 0.0 200125 703 0.4+ 0.2+
191125 I52 0.2+ 0.3- 191205 K87 0.2+ 0.1- 200125 703 0.0 0.1+
191125 I52 0.2- 0.2- 191205 K87 0.3+ 0.1- 200128 703 0.7+ 0.1-
191125 I52 0.3+ 0.5- 191205 H21 0.2+ 0.4+ 200128 703 0.5- 0.7+
191125 H21 0.3- 0.1- 191205 H21 0.1+ 0.2+ 200128 703 0.2- 0.7+
191125 H21 0.2- 0.1- 191205 H21 0.1+ 0.1+ 200128 703 0.3- 0.3-
191125 H21 0.4- 0.2+ 191205 H21 0.0 0.1+ 200131 703 0.3- 0.0
191125 H21 0.1+ 0.0 191205 H21 0.1+ 0.2+ 200131 703 0.9- 0.4-
191125 H36 0.1+ 0.0 191205 H21 0.0 0.2+ 200131 703 0.3- 0.2-
191125 H36 0.3+ 0.1+ 191205 H21 0.1+ 0.0 200131 703 0.9- 2.0+
191125 H36 0.4+ 0.1- 191205 H21 0.1+ 0.2+ 200229 I52 0.3- 0.2-
191125 850 0.1- 0.9+ 191205 H21 0.1+ 0.1+ 200229 I52 0.1+ 0.2+
191125 850 0.4+ 0.1+ 191205 H21 0.2+ 0.1+ 200229 I52 0.0 0.0
191125 654 0.0 0.0 191205 B67 0.1+ 0.3+ 200229 I52 0.0 0.0
191125 654 0.0 0.0 191205 B67 0.2- 0.1+ 200405 G96 0.5- 0.4-
191125 654 0.1+ 0.0 191205 B67 0.2- 0.1+ 200405 G96 0.9+ 0.3-
191125 587 0.1- 0.4+ 191205 246 0.1+ 0.3+ 200405 G96 0.3+ 0.6+
191125 587 0.3- 1.2+ 191205 246 0.6- 0.8- 200405 G96 0.1- 0.3-
191125 587 0.7- 0.6+ 191205 246 1.1- 0.5- 200405 I52 0.2+ 0.2-
191125 104 0.1- 0.3- 191205 246 0.4- 0.3- 200405 I52 1.1+ 0.2-
191125 104 0.2+ 0.1+ 191205 246 0.1- 0.1- 200405 I52 0.1- 0.0
191125 K63 0.1+ 0.3- 191205 246 0.3- 0.1+ 200405 I52 0.1+ 0.3-
191125 K63 0.0 0.3- 191205 246 0.3- 0.4- 200410 G96 0.5- 0.1+
191125 104 0.1- 0.0 191207 H45 0.9- 1.1- 200410 G96 0.0 0.6+
191125 K63 0.1+ 0.2+ 191207 H45 0.6- 1.2- 200410 G96 0.4+ 0.1-
191126 W87 0.1+ 0.4+ 191207 H45 0.6- 0.9- 200410 G96 0.2- 0.2+
191126 W87 0.1- 0.2- 191207 H45 1.2- 0.8- 200417 F51 0.1- 0.0
191126 W87 0.2+ 0.2+ 191207 H45 0.4- 0.9- 200417 F51 0.1- 0.0
191126 W87 0.3+ 0.2+ 191207 H45 0.5- 0.5- 200417 F51 0.1- 0.1-
191126 W87 1.2+ 0.2+ 191217 I52 0.2- 0.2- 200417 F51 0.0 0.1+
191126 W87 0.2+ 0.1- 191217 I52 0.0 0.1- 200514 I52 0.1- 0.0
191126 T08 0.0 0.6+ 191217 I52 0.0 0.0 200514 I52 0.2- 0.3+
191126 T08 0.4+ 0.2+ 191217 I52 0.1+ 0.0 200514 I52 0.2+ 0.1-
191126 T08 0.2- 0.4+ 191219 703 0.2+ 0.0 200514 I52 0.1+ 0.2+
191126 T08 0.3- 0.0 191219 703 0.1- 0.1+ 200517 G96 0.3- 0.0
191126 E23 0.1- 0.4+ 191219 703 0.1- 0.1- 200517 G96 0.2+ 0.6-
191126 E23 0.1- 0.1+ 191219 703 0.1- 0.1- 200517 G96 0.0 1.0-
191126 E23 0.4+ 0.3+ 191220 I52 0.3+ 0.2- 200517 G96 0.0 0.4-
191126 Q62 1.1- 1.0+ 191220 I52 0.1+ 0.2+
Ephemeris:
2019 WR2 a,e,i = 2.45, 0.54, 31 q = 1.1205
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 10 18 18 48.0 -27 39 58 4.0244 3.0914 16.1 5.1 25.2
...
2021 01 25 18 40 26.7 -28 19 49 4.0021 3.1518 26.5 8.0 25.4
...
2021 02 02 18 51 31.7 -28 38 48 3.9733 3.1829 32.2 9.5 25.4
...
2021 02 08 18 59 35.5 -28 52 28 3.9442 3.2056 36.5 10.5 25.5
2021 02 09 19 00 54.8 -28 54 43 3.9388 3.2093 37.2 10.7 25.5
2021 02 10 19 02 13.7 -28 56 59 3.9332 3.2130 38.0 10.9 25.5
...
2021 02 16 19 09 57.8 -29 10 30 3.8960 3.2351 42.4 11.9 25.5
...
2021 02 24 19 19 50.3 -29 28 55 3.8375 3.2638 48.3 13.1 25.6
...
2021 03 11 19 36 48.2 -30 07 12 3.7035 3.3153 59.7 15.0 25.6
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-C135
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