MPEC 2023-C120 : 2021 RW209
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M.P.E.C. 2023-C120 Issued 2023 February 13, 17:11 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 RW209
Observations:
K21RK9W*5C2021 09 07.61686 00 17 21.596+11 38 30.69 25.0 rVEC120568
K21RK9W 5C2021 09 08.61871 00 17 18.560+11 38 09.18 25.1 rVEC120568
K21RK9W 5C2022 10 16.10870 00 18 40.571+11 07 13.39 25.0 rVEC120304
K21RK9W 5C2022 10 16.17879 00 18 40.349+11 07 11.35 25.0 rVEC120304
K21RK9W 5C2022 11 19.04598 00 17 15.856+10 51 58.73 25.1 rVEC120304
K21RK9W 5C2022 11 20.04390 00 17 14.113+10 51 34.33 25.2 rVEC120304
Observer details:
304 Las Campanas Observatory. Observer S. S. Sheppard. 6.5-m Magellan-Baade
telescope + CCD.
568 Maunakea. Observers S. S. Sheppard, D. J. Tholen, C. Trujillo. Measurer
S. S. Sheppard. 8.2-m Subaru reflector + CCD.
Orbital elements:
2021 RW209
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Alexandersen
M 33.21006 (2000.0) P Q
n 0.00144675 Peri. 104.28723 +0.46351002 +0.86123333
a 77.4238142 Node 198.38067 -0.81655935 +0.50648688
e 0.3339424 Incl. 41.37128 +0.34407744 +0.04181130
P 681 H 7.47 G 0.15 U 9
Residuals in seconds of arc
210907 568 0.1+ 0.0 221016 304 0.0 0.1+ 221119 304 0.0 0.0
210908 568 0.1- 0.0 221016 304 0.0 0.0 221120 304 0.0 0.1-
Ephemeris:
2021 RW209 a,e,i = 77.42, 0.33, 41 q = 51.5687
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 01 14 00 17 12.0 +10 37 57 60.0964 59.8515 75.1 0.9 25.4
...
2023 01 29 00 17 44.3 +10 37 51 60.3449 59.8608 60.2 0.8 25.4
...
2023 02 06 00 18 06.4 +10 38 28 60.4645 59.8657 52.2 0.7 25.4
...
2023 02 12 00 18 25.0 +10 39 12 60.5467 59.8695 46.3 0.7 25.4
2023 02 13 00 18 28.3 +10 39 21 60.5597 59.8701 45.4 0.7 25.4
2023 02 14 00 18 31.6 +10 39 30 60.5725 59.8707 44.4 0.7 25.4
...
2023 02 20 00 18 52.2 +10 40 33 60.6446 59.8744 38.5 0.6 25.4
...
2023 02 28 00 19 21.6 +10 42 16 60.7276 59.8794 30.8 0.5 25.4
...
2023 03 15 00 20 21.0 +10 46 20 60.8386 59.8887 17.0 0.3 25.3
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-C120
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