MPEC 2023-V246 : 2021 RW2
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M.P.E.C. 2023-V246 Issued 2023 November 14, 14:21 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
2021 RW2
Revision to MPEC 2021-R147
Additional Observations:
K21R02W 0C2023 08 12.36133817 27 18.793+39 09 07.84 24.24GVEV246T12
K21R02W 0C2023 08 14.32523317 27 15.948+38 14 38.59 23.73GVEV246T12
K21R02W 0C2023 08 14.41332417 27 15.829+38 12 08.65 23.90GVEV246T12
Observer details:
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 (or two decimals in degrees), reference and Delta-T
230812 T12 0.08- 0.02- 230814 T12 0.08- 0.01- MPO750185 +0.05 days
Orbital elements:
2021 RW2 Earth MOID = 0.3320 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 288.91648 (2000.0) P Q
n 0.43547689 Peri. 233.62462 +0.67670754 -0.72715077
a 1.7238229 Node 170.68078 +0.65149616 +0.66442014
e 0.2868366 Incl. 45.45278 -0.34295721 -0.17261991
P 2.26 H 20.62 G 0.15 U 1
Residuals in seconds of arc
210906 703 0.7+ 0.3+ 210906 958 0.2+ 0.5+ 210911 G96 0.1- 0.0
210906 703 0.1+ 0.2- 210906 958 0.4+ 0.1+ 210911 A17 0.3+ 0.6+
210906 703 0.3+ 0.1- 210907 858 0.0 0.0 210911 A17 0.0 0.1-
210906 703 0.6- 0.5- 210907 858 0.2+ 0.1+ 210911 A17 0.3+ 0.1+
210906 703 0.6+ 0.2+ 210907 H21 0.2+ 0.1- 210912 G96 0.1- 0.2+
210906 703 0.2+ 0.2- 210907 H21 0.3+ 0.0 210912 G96 0.0 0.2+
210906 703 0.7+ 0.3- 210907 H21 0.4+ 0.2- 210912 G96 0.4- 0.2-
210906 N88 0.4+ 0.4+ 210907 T08 0.4+ 0.1+ 210912 G96 0.0 0.0
210906 N88 0.4- 0.6- 210907 T08 0.2- 0.1+ 210914 703 1.0+ 0.0
210906 N88 0.1+ 0.3- 210907 T08 0.5+ 0.8+ 210914 703 0.2+ 0.2-
210906 N88 0.1+ 0.6- 210907 T08 0.9- 0.3- 210914 703 0.7- 0.4+
210906 N88 0.2- 0.4- 210907 033 0.1- 0.1- 210917 807 0.4- 0.2-
210906 246 0.1- 1.0- 210907 033 0.1- 0.2- 210917 807 0.0 0.1+
210906 246 0.7- 0.3- 210907 033 0.2+ 0.2- 210917 807 0.0 0.0
210906 246 0.4- 0.2- 210907 033 0.0 0.2- 210923 F51 (0.0 0.5+)
210906 033 0.3- 0.3- 210907 G15 0.4+ 0.1- 210923 F51 0.1+ 0.0
210906 033 0.4- 0.6- 210907 246 0.7+ 0.1- 210923 F51 0.1- 0.1+
210906 104 0.7- 0.1- 210907 246 0.2+ 0.2+ 210924 807 0.2+ 0.6-
210906 104 0.3- 0.2+ 210907 246 0.3+ 0.2- 210924 807 0.3- 0.2+
210906 104 0.0 0.1- 210907 G15 0.1+ 0.3- 210924 807 0.4- 0.5-
210906 L01 0.4- 0.2- 210907 G15 0.2- 1.1- 210928 807 0.4- 0.3+
210906 L01 0.3+ 0.1+ 210908 K87 0.2- 0.0 210928 807 0.2- 0.1-
210906 L01 0.3+ 0.2+ 210908 K87 0.1+ 0.6- 210928 807 0.4- 0.1+
210906 L01 0.1- 0.2+ 210908 K87 0.6+ 0.6- 211017 807 0.0 0.4-
210906 L01 0.2- 0.1+ 210909 K88 0.3+ 0.2- 211017 807 0.1+ 0.2-
210906 I93 0.0 0.1- 210909 K88 0.0 0.1+ 211017 807 0.0 0.2-
210906 J04 0.1- 0.2- 210909 F52 0.0 0.1+ 211112 807 0.1- 0.0
210906 J04 0.4+ 0.2- 210909 F52 0.0 0.1+ 211112 807 0.1+ 0.0
210906 I93 0.0 0.5+ 210911 703 0.7- 0.3- 211112 807 0.2+ 0.6+
210906 J04 0.1+ 0.5+ 210911 703 0.9+ 0.5- 211125 807 0.1- 0.0
210906 I93 0.2+ 0.3+ 210911 G96 0.0 0.1+ 211125 807 0.1+ 0.1+
210906 K83 0.9+ 0.3- 210911 703 0.5- 0.4+ 211125 807 0.2+ 0.0
210906 K83 0.8+ 0.2- 210911 G96 0.1+ 0.0 230812 T12 0.0 0.0
210906 K83 1.0+ 0.4+ 210911 703 0.3+ 0.7+ 230814 T12 0.0 0.0
210906 958 0.1- 0.9+ 210911 G96 0.0 0.1+ 230814 T12 0.0 0.0
Ephemeris:
2021 RW2 a,e,i = 1.72, 0.29, 45 q = 1.2294
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 10 15 18 37 29.4 +05 09 32 1.3924 1.5781 80.8 38.6 23.9
...
2023 10 30 19 09 43.8 -01 51 18 1.4601 1.5194 73.8 38.9 23.9
...
2023 11 07 19 28 33.8 -05 09 00 1.5007 1.4886 70.0 38.7 23.9
...
2023 11 13 19 43 21.4 -07 24 03 1.5325 1.4658 67.1 38.5 23.9
2023 11 14 19 45 52.5 -07 45 25 1.5378 1.4620 66.6 38.4 23.9
2023 11 15 19 48 24.4 -08 06 28 1.5432 1.4583 66.2 38.4 23.9
...
2023 11 21 20 03 53.6 -10 05 56 1.5756 1.4360 63.3 37.9 23.9
...
2023 11 29 20 25 15.2 -12 27 04 1.6185 1.4072 59.7 37.2 23.9
...
2023 12 14 21 07 14.6 -15 57 08 1.6951 1.3565 53.1 35.5 23.9
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-V246
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