[Iaude] MPEC X121: 2021 RA15 [a=2.52,e=0.56,i=18.9,H=18.5]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Sun Dec 5 10:04:59 EST 2021
M.P.E.C. 2021-X121 Issued 2021 December 5, 15:03 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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 RA15
Revision to MPEC 2021-R321
Additional Observations:
K21R15A C2017 07 29.52600522 29 14.746+02 05 31.83 22.21GVEX121F51
K21R15A C2017 07 29.53982122 29 14.236+02 05 27.61 22.28GVEX121F51
K21R15A C2017 07 29.55309422 29 13.718+02 05 24.05 22.32GVEX121F51
K21R15A C2017 09 11.36411721 49 29.635-04 17 27.92 22.45GVEX121F51
K21R15A C2017 09 11.37774821 49 28.875-04 17 36.67 22.14GVEX121F51
K21R15A C2017 10 11.27704821 30 22.133-09 24 39.70 22.52GVEX121F51
K21R15A C2017 10 11.28937621 30 21.910-09 24 46.21 22.52GVEX121F51
K21R15A C2017 10 11.30172421 30 21.696-09 24 52.21 23.26GVEX121F51
K21R15A C2017 10 11.31403921 30 21.507-09 24 58.18 22.60GVEX121F51
K21R15A C2017 11 07.21177521 34 09.155-12 07 09.58 22.90GVEX121F51
K21R15A C2017 11 07.22354221 34 09.498-12 07 12.11 22.34GVEX121F51
K21R15A C2017 11 07.24706821 34 10.210-12 07 17.16 22.01GVEX121F51
K21R15A C2019 06 09.44724616 35 56.109+04 34 39.02 23.44GVEX121F51
K21R15A C2019 06 09.45989816 35 55.361+04 34 39.51 23.44GVEX121F51
K21R15A C2019 06 09.47259716 35 54.616+04 34 39.14 24.46GVEX121F51
K21R15A C2019 06 10.48320516 34 56.891+04 34 43.08 23.43GVEX121F51
K21R15A C2019 06 10.49685316 34 56.102+04 34 43.16 23.10GVEX121F51
K21R15A C2019 06 10.51045516 34 55.328+04 34 42.83 23.51GVEX121F51
K21R15A C2019 06 10.52413216 34 54.542+04 34 42.91 23.31GVEX121F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, I. Smith. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
170729 F51 5.4- 0.0- 190610 F51 56.7- 27.1- MPO660780 +1462 days
Orbital elements:
2021 RA15 Earth MOID = 0.2601 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5 Veres
M 324.24999 (2000.0) P Q
n 0.24611288 Peri. 295.44076 -0.28578869 -0.95686742
a 2.5218146 Node 170.69739 +0.95354223 -0.28937083
e 0.5619879 Incl. 18.85671 +0.09529978 +0.02587018
P 4.00 H 18.55 G 0.15 U 1
Residuals in seconds of arc
170729 F51 0.3- 0.2+ 190609 F51 0.0 0.2- 210911 291 0.5- 0.2-
170729 F51 0.0 0.2- 190610 F51 0.1- 0.0 210912 291 0.2- 0.1-
170729 F51 0.1- 0.0 190610 F51 0.1- 0.1+ 210912 291 0.2- 0.1-
170911 F51 0.3- 0.2- 190610 F51 0.1+ 0.2- 210912 291 0.0 0.1+
170911 F51 0.3+ 0.3+ 190610 F51 0.2+ 0.0 210914 291 0.3+ 0.1+
171011 F51 0.2+ 0.1+ 210908 F52 0.2+ 0.0 210914 291 0.4- 0.1+
171011 F51 0.0 0.2- 210908 F52 0.0 0.1+ 210914 291 0.1- 0.1+
171011 F51 0.1- 0.0 210908 F52 0.1+ 0.1- 210926 807 0.0 0.4-
171011 F51 0.2+ 0.3+ 210908 F52 0.1- 0.1+ 210926 807 0.0 0.5-
171107 F51 0.0 0.0 210909 H21 0.1+ 0.3- 210926 807 0.1- 0.0
171107 F51 0.1- 0.0 210909 H21 0.1- 0.0 211003 807 0.0 0.2+
171107 F51 0.2+ 0.0 210909 H21 0.1+ 0.3- 211003 807 0.1+ 0.2-
190609 F51 0.0 0.0 210909 H21 0.1+ 0.5- 211003 807 (0.3+ 0.9-)
190609 F51 0.1- 0.3+ 210911 291 0.1+ 0.1+
Ephemeris:
2021 RA15 a,e,i = 2.52, 0.56, 19 q = 1.1046
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 11 05 21 31 32.4 -12 13 34 2.0880 2.4441 98.8 23.6 23.2
...
2021 11 20 21 41 16.7 -12 51 48 2.2053 2.3484 85.7 24.8 23.3
...
2021 11 28 21 48 35.8 -12 57 09 2.2646 2.2960 79.3 25.0 23.3
...
2021 12 04 21 54 57.6 -12 54 39 2.3064 2.2562 74.7 24.9 23.3
2021 12 05 21 56 05.3 -12 53 43 2.3131 2.2495 73.9 24.9 23.3
2021 12 06 21 57 14.2 -12 52 37 2.3197 2.2428 73.2 24.9 23.3
...
2021 12 12 22 04 30.9 -12 42 59 2.3575 2.2022 68.8 24.6 23.3
...
2021 12 20 22 15 11.0 -12 22 15 2.4025 2.1475 63.2 24.1 23.2
...
2022 01 04 22 37 53.1 -11 20 25 2.4677 2.0427 53.5 22.8 23.1
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-X121
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