[Iaude] MPEC A31: 2021 RD239 [a=1.62,e=0.43,i=1.6,H=28.3]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Wed Jan 3 13:53:36 EST 2024
M.P.E.C. 2024-A31 Issued 2024 January 3, 18:51 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2021 RD239
Observations:
K21RN9D* C2021 09 05.06400 00 34 43.71 +13 36 18.4 19.8 RoEA031K88
K21RN9D C2021 09 05.06600 00 34 42.24 +13 36 01.6 19.6 RoEA031K88
K21RN9D C2021 09 05.06799 00 34 40.90 +13 35 43.5 19.8 RoEA031K88
K21RN9D ZC2021 09 05.38054 00 32 42.49 +12 58 18.0 VEA031I41
K21RN9D ZC2021 09 05.38149 00 32 41.87 +12 58 12.0 VEA031I41
K21RN9D C2021 09 05.40891700 32 51.387+12 56 59.22 21.27GVEA031F52
K21RN9D C2021 09 05.41988700 32 45.011+12 55 51.29 20.27GVEA031F52
K21RN9D KC2021 09 05.87277 00 30 25.68 +12 09 06.1 20.4 GVEA031K88
K21RN9D KC2021 09 05.87608 00 30 24.46 +12 08 52.1 19.9 GVEA031K88
K21RN9D KC2021 09 05.87932 00 30 23.25 +12 08 38.0 20.0 GVEA031K88
K21RN9D KC2021 09 05.98287 00 29 43.47 +12 01 05.6 20.6 GVEA031K88
K21RN9D KC2021 09 05.98611 00 29 42.15 +12 00 52.0 20.7 GVEA031K88
K21RN9D KC2021 09 05.98935 00 29 40.87 +12 00 36.8 20.6 GVEA031K88
Observer details:
F52 Pan-STARRS 2, Haleakala. Observers J. Herman, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
Weryk. 1.8-m Ritchey-Chretien + CCD.
I41 Palomar Mountain--ZTF. Observer Z. T. F. Collaboration. Measurer K.
Sarneczky. 1.2-m f/2.44 Oschin Schmidt + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 0.60-m Schmidt + CCD.
Orbital elements:
2021 RD239 Earth MOID = 0.0007 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 12.82356 (2000.0) P Q
n 0.47998763 Peri. 315.62954 +0.41476128 +0.90987334
a 1.6155337 Node 338.86842 -0.82679562 +0.37217298
e 0.4327729 Incl. 1.61768 -0.37997643 +0.18335149
P 2.05 H 28.39 G 0.15 U 7
Residuals in seconds of arc
210905 K88 (1.8+ 1.0-) 210905 F52 0.3- 0.2- 210905 K88 1.1+ 0.4-
210905 K88 0.0 0.1+ 210905 F52 0.3+ 0.2+ 210905 K88 0.3+ 0.1+
210905 K88 0.1+ 0.1- 210905 K88 0.7+ 1.1- 210905 K88 0.1- 0.9-
210905 I41 0.2- 0.1- 210905 K88 0.6+ 0.5-
210905 I41 1.0- 0.3+ 210905 K88 0.4+ 0.4-
Ephemeris:
2021 RD239 a,e,i = 1.62, 0.43, 2 q = 0.9164
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 12 04 23 41 16.0 +00 33 21 0.8419 1.4496 104.7 41.1 30.4
...
2023 12 19 00 17 05.2 +04 13 52 1.0427 1.5430 99.1 39.0 31.0
...
2023 12 27 00 34 46.0 +06 01 07 1.1565 1.5912 95.7 38.0 31.2
...
2024 01 02 00 47 35.6 +07 17 42 1.2442 1.6265 93.1 37.1 31.4
2024 01 03 00 49 42.1 +07 30 10 1.2590 1.6323 92.6 37.0 31.5
2024 01 04 00 51 48.2 +07 42 34 1.2739 1.6381 92.1 36.9 31.5
...
2024 01 10 01 04 16.9 +08 55 23 1.3639 1.6723 89.3 36.0 31.7
...
2024 01 18 01 20 38.8 +10 28 32 1.4858 1.7167 85.5 34.8 31.9
...
2024 02 02 01 50 47.1 +13 11 29 1.7176 1.7958 78.1 32.5 32.2
M. P. C. Staff (C) Copyright 2024 MPC M.P.E.C. 2024-A31
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