MPEC 2023-P74 : 2020 RW2
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M.P.E.C. 2023-P74 Issued 2023 August 13, 14:05 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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 RW2
Revision to MPEC 2020-R103
Additional Observations:
K20R02W C2015 04 23.40051214 47 09.558-10 03 03.71 22.83GVEP074F51
K20R02W C2015 04 23.42548714 47 07.024-10 02 35.85 23.23GVEP074F51
K20R02W C2015 04 23.43797014 47 05.699-10 02 21.77 22.83GVEP074F51
K20R02W C2015 04 24.49802814 45 20.837-09 42 31.81 22.97GVEP074F51
K20R02W C2015 04 25.46438714 43 45.022-09 24 28.98 23.05GVEP074F51
K20R02W C2018 03 20.45910412 34 06.964-12 44 49.44 22.87GVEP074F51
K20R02W C2018 03 20.47073812 34 05.784-12 44 32.38 22.91GVEP074F51
K20R02W C2023 06 17.49939420 14 37.031+01 43 35.73 22.57GVEP074F51
K20R02W C2023 06 17.51089520 14 36.745+01 43 45.46 23.35GVEP074F51
K20R02W C2023 06 17.52262520 14 36.417+01 43 55.26 23.80GVEP074F51
K20R02W C2023 06 22.52863520 12 06.610+02 52 49.10 23.61GVEP074F51
K20R02W 0C2023 08 10.35176919 01 32.939+04 31 52.88 23.22GVEP074T12
K20R02W 0C2023 08 11.32128119 00 16.885+04 20 02.04 23.41GVEP074T12
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, P.
Minguez, A. Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M.
Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien +
CCD.
T12 University of Hawaii 88-inch telescope, Maunakea. Observers D. J. Tholen,
D. Hung. Measurer D. J. Tholen. 2.24-m f/10.1 reflector + 2112 x 2112
pixels STA1600 10k CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
150423 F51 6.5+ 1.1+ 230811 T12 4.3+ 1.5+ MPO750185 +0.02 days
Orbital elements:
2020 RW2 Earth MOID = 0.0740 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 296.30438 (2000.0) P Q
n 0.63667978 Peri. 217.18862 +0.51820023 -0.85344274
a 1.3382030 Node 201.77003 +0.81636811 +0.51300603
e 0.2208480 Incl. 8.63964 +0.25497380 +0.09197988
P 1.55 H 22.84 G 0.15 U 0
Residuals in seconds of arc
150423 F51 0.4- 0.0 200929 F52 0.2+ 0.0 201029 I52 0.5- 0.3-
150423 F51 0.5+ 0.0 200929 F52 0.5+ 0.2- 201029 I52 0.4+ 0.2+
150423 F51 0.0 0.1+ 200929 F52 0.1- 0.4+ 201030 G96 0.2- 0.4+
150424 F51 0.3+ 0.3+ 200930 I52 0.0 0.2- 201030 G96 0.1+ 0.3+
150425 F51 0.1+ 0.3+ 200930 I52 0.1- 0.1+ 201030 G96 0.1+ 0.0
180320 F51 0.0 0.0 200930 I52 0.1- 0.1- 201030 G96 0.1+ 0.0
180320 F51 0.3- 0.1+ 200930 I52 0.0 0.1+ 201031 291 0.1- 0.1+
200817 F52 0.0 0.0 201008 I52 0.0 0.1+ 201031 291 0.2- 0.0
200828 G96 0.2+ 0.2- 201008 I52 0.1+ 0.4+ 201031 291 0.1- 0.0
200828 G96 0.0 0.5+ 201008 I52 0.2- 0.1- 201103 291 0.0 0.0
200904 F51 0.0 0.1- 201008 I52 0.5+ 0.4+ 201103 291 0.1- 0.0
200904 F51 0.2- 0.1- 201009 I52 0.1- 0.3- 201103 291 0.0 0.0
200910 F52 0.2- 0.4+ 201009 I52 0.4- 0.3+ 201104 291 0.2+ 0.5-
200910 F51 0.1- 0.0 201009 I52 0.2- 0.4- 201104 291 0.2+ 0.3+
200910 F52 0.3+ 0.1- 201009 I52 0.3+ 0.6- 201110 474 0.2+ 0.3-
200910 F51 0.1- 0.1+ 201009 D29 0.0 0.2+ 201110 474 0.1- 0.3-
200910 F52 0.3- 0.2- 201009 D29 0.3- 0.4- 201110 474 0.2+ 0.0
200910 F51 0.0 0.1+ 201009 D29 0.8- 0.4+ 201110 474 0.4+ 0.2-
200910 F52 0.2- 0.2- 201014 734 0.2- 0.0 201205 807 0.0 0.1-
200911 568 0.0 0.0 201014 734 0.3+ 0.4- 201205 807 (0.0 0.8-)
200911 568 0.0 0.0 201014 734 0.9- 0.1- 201205 807 0.1- 0.1-
200911 F51 0.2+ 0.1- 201014 734 0.5+ 0.5- 201209 807 0.2+ 0.0
200911 F51 0.0 0.1- 201014 734 1.0+ 0.4- 201209 807 0.0 0.1-
200911 F51 0.1+ 0.0 201014 734 1.3+ 0.2- 201209 807 0.2+ 0.1+
200911 F52 0.1+ 0.1- 201014 G96 0.1- 0.1+ 210105 807 (1.0- 0.5+)
200911 F51 0.2+ 0.0 201014 G96 0.1- 0.0 210105 807 0.6- 0.1+
200913 L01 0.4- 0.2+ 201014 G96 0.2+ 0.2+ 210105 807 0.5- 0.1+
200913 L01 0.0 0.0 201014 G96 0.1- 0.0 210113 807 (0.8- 0.5-)
200913 L01 0.1+ 0.0 201015 G96 0.1- 0.0 210113 807 0.2- 0.2-
200918 G96 0.1+ 0.5+ 201015 G96 0.3+ 0.3- 210113 807 0.3- 0.2-
200918 G96 0.2- 0.1+ 201015 G96 0.3- 0.2+ 210209 807 0.4+ 0.2-
200918 G96 0.4+ 0.2+ 201015 G96 0.0 0.2+ 210209 807 (1.5+ 0.1-)
200918 G96 (1.3+ 1.0-) 201022 F52 0.1+ 0.1- 210209 807 (1.3+ 0.3-)
200922 F51 0.1- 0.1- 201022 F52 0.0 0.2+ 230617 F51 0.3- 0.1+
200922 F51 0.0 0.0 201022 F52 0.1+ 0.1- 230617 F51 0.2+ 0.1+
200922 F51 0.1+ 0.2- 201027 I52 0.2- 0.1- 230617 F51 0.1+ 0.1-
200929 G96 0.2- 0.3- 201027 I52 0.1- 0.1+ 230622 F51 0.2- 0.1+
200929 G96 0.1- 0.3- 201027 I52 0.0 0.3- 230810 T12 0.1+ 0.1+
200929 G96 0.2+ 0.0 201027 I52 0.2+ 0.2+ 230811 T12 0.1+ 0.1+
200929 G96 0.1+ 0.0 201029 I52 0.0 0.0
Ephemeris:
2020 RW2 a,e,i = 1.34, 0.22, 9 q = 1.0427
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 07 14 19 47 15.2 +06 20 16 0.4822 1.4588 151.6 19.4 23.1
...
2023 07 29 19 21 02.9 +06 18 59 0.4437 1.4157 149.5 21.4 22.9
...
2023 08 06 19 07 48.2 +05 19 28 0.4359 1.3912 144.1 25.3 22.9
...
2023 08 12 18 59 25.2 +04 11 35 0.4350 1.3724 139.1 28.9 23.0
2023 08 13 18 58 11.8 +03 58 38 0.4353 1.3692 138.3 29.5 23.0
2023 08 14 18 57 01.7 +03 45 15 0.4356 1.3660 137.4 30.1 23.0
...
2023 08 20 18 51 16.4 +02 17 32 0.4393 1.3466 132.1 33.9 23.1
...
2023 08 28 18 47 13.5 +00 06 37 0.4483 1.3202 125.1 38.7 23.2
...
2023 09 12 18 50 56.6 -04 12 44 0.4717 1.2699 113.4 46.7 23.5
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-P74
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