MPEC 2023-P63 : 2018 RC8
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M.P.E.C. 2023-P63 Issued 2023 August 12, 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
2018 RC8
Revision to MPEC 2018-S20
Additional Observations:
K18R08C 0C2023 08 09.60615403 01 24.320-05 12 18.63 22.47GVEP063T12
K18R08C 0C2023 08 10.61757303 02 22.300-04 56 50.82 22.12GVEP063T12
K18R08C 0C2023 08 10.62152203 02 22.500-04 56 47.19 22.38GVEP063T12
K18R08C 0C2023 08 10.62527003 02 22.695-04 56 43.81 22.38GVEP063T12
Observer details:
T12 University of Hawaii 88-inch telescope, Maunakea. Observers D. Hung, D.
J. Tholen. 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
230809 T12 24.4+ 88.2+ 230810 T12 25.3+ 88.2+ MPO750185 +0.03 days
Orbital elements:
2018 RC8 Earth MOID = 0.2412 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 38.42404 (2000.0) P Q
n 0.39655860 Peri. 256.89333 +0.29201382 +0.94589071
a 1.8348383 Node 31.23679 -0.73724175 +0.31685824
e 0.4023666 Incl. 15.83324 -0.60926392 +0.06994019
P 2.49 H 20.63 G 0.15 U 1
Residuals in seconds of arc
180914 G96 0.1- 1.1- 180916 I52 0.1- 0.0 181013 H36 0.1- 0.4+
180914 G96 0.2+ 0.0 180916 I52 0.0 0.2+ 181013 H36 0.5+ 0.0
180914 G96 0.2+ 0.0 180918 I52 0.1- 0.2- 181013 H36 0.5+ 0.1-
180914 G96 0.3+ 0.2+ 180918 I52 0.2+ 0.0 181013 H36 0.2- 0.3-
180914 I52 0.1- 0.1- 180918 I52 0.1- 0.0 181026 V06 0.0 0.2-
180914 I52 0.2- 0.1- 180918 I52 0.0 0.2- 181026 V06 0.3- 0.3+
180914 I52 0.1+ 0.1+ 180921 I52 0.2+ 0.4+ 181026 V06 0.2- 0.2+
180915 734 0.2- 0.0 180921 I52 0.1+ 0.1- 181026 V06 0.5+ 0.5+
180915 734 0.1- 0.2+ 180921 I52 0.2+ 0.0 181106 711 0.1- 0.4-
180915 734 0.0 0.2+ 180921 I52 0.1- 0.1- 181106 711 0.2- 0.1-
180915 734 0.2- 0.0 180929 I52 0.4+ 0.5+ 181106 711 0.4+ 0.1-
180915 I52 0.0 0.1- 180929 I52 0.4- 0.3- 181108 H21 0.0 0.1+
180915 I52 0.0 0.2+ 180929 I52 0.4+ 0.0 181108 H21 0.0 0.2+
180915 I52 0.2- 0.2+ 180929 I52 0.2- 0.2+ 181108 H21 0.1+ 0.1-
180915 I52 0.1- 0.3+ 181001 H21 0.7- 0.5+ 181129 807 0.2- 0.0
180916 L01 0.1- 0.0 181001 H21 0.4+ 0.5+ 181129 807 0.2- 0.0
180916 L01 0.2+ 0.3+ 181001 H21 0.1+ 0.4+ 181129 807 0.1- 0.1-
180916 H21 0.3+ 0.0 181006 G96 0.9+ 0.6- 230809 T12 0.0 0.1-
180916 H21 0.2- 0.2+ 181006 G96 0.6- 0.5- 230810 T12 0.0 0.0
180916 I52 0.3- 0.0 181006 G96 0.0 0.0 230810 T12 0.0 0.0
180916 I52 0.1- 0.1+ 181006 G96 0.5- 0.2+ 230810 T12 0.1+ 0.0
Ephemeris:
2018 RC8 a,e,i = 1.83, 0.40, 16 q = 1.0966
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 07 13 02 19 21.0 -13 13 38 0.6812 1.1540 83.1 61.0 22.3
...
2023 07 28 02 45 49.6 -08 37 07 0.6847 1.2087 88.4 57.1 22.3
...
2023 08 05 02 56 26.7 -06 24 25 0.6800 1.2433 92.2 54.6 22.3
...
2023 08 11 03 02 43.2 -04 50 58 0.6735 1.2711 95.7 52.5 22.2
2023 08 12 03 03 36.9 -04 35 51 0.6722 1.2759 96.3 52.1 22.2
2023 08 13 03 04 28.0 -04 20 53 0.6709 1.2807 96.9 51.8 22.2
...
2023 08 19 03 08 35.6 -02 53 31 0.6617 1.3104 101.0 49.3 22.2
...
2023 08 27 03 11 17.6 -01 02 36 0.6472 1.3515 107.2 45.6 22.1
...
2023 09 11 03 06 34.5 +02 13 37 0.6190 1.4322 121.7 36.8 21.9
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-P63
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