MPEC 2000-D36: 1999 RA216, 1999 RB216
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M.P.E.C. 2000-D36 Issued 2000 Feb. 29, 00:00 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 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
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1999 RA216, 1999 RB216
Observations:
J99RL6A*1C1999 09 08.44227 23 33 22.07 -02 35 07.9 22.9 R 568
J99RL6A 1C1999 09 08.48416 23 33 21.89 -02 35 08.9 23.1 R 568
J99RL6A 1C1999 09 08.52675 23 33 21.71 -02 35 10.2 22.9 R 568
J99RL6A 1C1999 09 10.40095 23 33 13.70 -02 36 02.1 23.3 R 568
J99RL6A 1C1999 09 10.41255 23 33 13.63 -02 36 02.4 23.1 R 568
J99RL6A 1C1999 10 09.37450 23 31 12.16 -02 49 12.0 23.1 R 568
J99RL6A 1C1999 10 09.39354 23 31 12.11 -02 49 12.7 23.1 R 568
J99RL6A 1C1999 10 09.43417 23 31 11.94 -02 49 13.7 23.1 R 568
J99RL6A 1C1999 11 09.28275 23 29 36.38 -02 59 41.9 23.1 R 568
J99RL6A 1C1999 11 09.33174 23 29 36.26 -02 59 42.3 23.1 R 568
J99RL6B*1C1999 09 08.44913 23 39 45.26 -01 50 39.8 22.5 R 568
J99RL6B 1C1999 09 08.49088 23 39 45.04 -01 50 41.3 22.3 R 568
J99RL6B 1C1999 09 08.53309 23 39 44.85 -01 50 42.7 22.5 R 568
J99RL6B 1C1999 09 10.34162 23 39 35.75 -01 51 50.6 22.2 R 568
J99RL6B 1C1999 09 10.36132 23 39 35.67 -01 51 51.2 22.4 R 568
J99RL6B 1C1999 09 13.45626 23 39 19.96 -01 53 47.1 22.4 R 568
J99RL6B 1C1999 09 13.46334 23 39 19.93 -01 53 47.5 22.1 R 568
J99RL6B 1C1999 10 08.39669 23 37 15.80 -02 09 11.3 22.4 R 568
J99RL6B 1C1999 10 08.42083 23 37 15.70 -02 09 12.1 22.4 R 568
J99RL6B 1C1999 11 09.29522 23 35 17.29 -02 24 38.6 22.5 R 568
J99RL6B 1C1999 11 09.34380 23 35 17.17 -02 24 39.6 22.3 R 568
Observer details:
568 Mauna Kea. Observers C. A. Trujillo, D. C. Jewitt, J. X. Luu,
S. S. Sheppard, D. J. Tholen. 3.6-m Canada-France-Hawaii telescope + CCD.
Orbital elements:
Object H G Epoch M Peri. Node Incl. e a Arc C
J99RL6A 7.1 0.15 J99A9 0.000 161.019 191.776 0.802 0.0 43.48848 62EM
J99RL6B 7.3 0.15 J99A9 334.584 231.661 175.690 13.043 0.35441 48.48019 62EM
Ephemerides:
1999 RA216 a,e,i = 43.49, 0.00, 1
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 05 16 23 40.20 -01 52.3 43.974 43.488 60.7 1.2 23.7
2000 05 26 23 40.67 -01 49.3 43.821 43.488 70.2 1.3 23.7
2000 06 05 23 41.01 -01 47.0 43.658 43.488 79.7 1.3 23.7
2000 06 15 23 41.22 -01 45.6 43.491 43.488 89.2 1.3 23.7
2000 06 25 23 41.30 -01 45.1 43.323 43.488 98.7 1.3 23.7
2000 07 05 23 41.23 -01 45.5 43.159 43.488 108.3 1.3 23.6
2000 07 15 23 41.03 -01 46.8 43.004 43.488 117.9 1.2 23.6
2000 07 25 23 40.71 -01 48.8 42.863 43.488 127.5 1.1 23.6
2000 08 04 23 40.27 -01 51.6 42.739 43.488 137.2 0.9 23.6
2000 08 14 23 39.74 -01 55.1 42.636 43.488 146.9 0.7 23.6
2000 08 24 23 39.12 -01 59.1 42.558 43.488 156.7 0.5 23.5
2000 09 03 23 38.45 -02 03.4 42.507 43.488 166.6 0.3 23.5
2000 09 13 23 37.74 -02 08.0 42.484 43.488 176.5 0.1 23.5
2000 09 23 23 37.02 -02 12.7 42.491 43.488 173.6 0.1 23.5
2000 10 03 23 36.32 -02 17.3 42.528 43.488 163.6 0.4 23.5
2000 10 13 23 35.67 -02 21.6 42.593 43.488 153.5 0.6 23.5
2000 10 23 23 35.08 -02 25.4 42.685 43.488 143.4 0.8 23.6
2000 11 02 23 34.58 -02 28.7 42.802 43.488 133.3 1.0 23.6
2000 11 12 23 34.19 -02 31.3 42.939 43.488 123.2 1.1 23.6
2000 11 22 23 33.93 -02 33.1 43.093 43.488 113.0 1.2 23.6
2000 12 02 23 33.81 -02 34.0 43.258 43.488 102.9 1.3 23.7
2000 12 12 23 33.83 -02 33.9 43.431 43.488 92.7 1.3 23.7
2000 12 22 23 33.99 -02 32.9 43.604 43.488 82.6 1.3 23.7
2001 01 01 23 34.31 -02 31.0 43.774 43.488 72.5 1.2 23.7
2001 01 11 23 34.76 -02 28.2 43.935 43.488 62.4 1.1 23.7
1999 RB216 a,e,i = 48.48, 0.35, 13 q = 31.298
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 05 26 23 49.89 -01 05.8 35.119 34.750 67.8 1.5 22.9
2000 06 05 23 50.42 -01 03.2 34.952 34.742 77.3 1.6 22.9
2000 06 15 23 50.77 -01 01.7 34.778 34.735 86.7 1.7 22.9
2000 06 25 23 50.96 -01 01.2 34.603 34.727 96.2 1.7 22.9
2000 07 05 23 50.98 -01 01.9 34.430 34.720 105.8 1.6 22.9
2000 07 15 23 50.83 -01 03.7 34.266 34.713 115.3 1.5 22.9
2000 07 25 23 50.52 -01 06.6 34.113 34.706 125.0 1.4 22.9
2000 08 04 23 50.06 -01 10.4 33.977 34.698 134.7 1.2 22.8
2000 08 14 23 49.47 -01 15.0 33.862 34.691 144.4 1.0 22.8
2000 08 24 23 48.77 -01 20.4 33.770 34.684 154.2 0.7 22.8
2000 09 03 23 47.99 -01 26.3 33.705 34.676 164.1 0.5 22.7
2000 09 13 23 47.16 -01 32.5 33.668 34.669 174.1 0.2 22.7
2000 09 23 23 46.31 -01 38.8 33.661 34.662 175.9 0.1 22.7
2000 10 03 23 45.47 -01 45.1 33.683 34.654 165.9 0.4 22.7
2000 10 13 23 44.67 -01 51.0 33.735 34.647 155.8 0.7 22.8
2000 10 23 23 43.96 -01 56.4 33.814 34.640 145.7 0.9 22.8
2000 11 02 23 43.35 -02 01.1 33.918 34.633 135.5 1.2 22.8
2000 11 12 23 42.88 -02 04.9 34.044 34.625 125.3 1.3 22.8
2000 11 22 23 42.56 -02 07.7 34.187 34.618 115.2 1.5 22.9
2000 12 02 23 42.42 -02 09.4 34.343 34.611 105.0 1.6 22.9
2000 12 12 23 42.45 -02 09.9 34.507 34.604 94.9 1.6 22.9
2000 12 22 23 42.67 -02 09.2 34.673 34.596 84.7 1.6 22.9
2001 01 01 23 43.06 -02 07.3 34.837 34.589 74.6 1.6 22.9
2001 01 11 23 43.64 -02 04.3 34.992 34.582 64.6 1.5 22.9
The assumed 1:2 Neptune-resonance orbital elements for 1999 RB216 keep
the object more than 19 AU from Neptune over a 14 000-year period.
Brian G. Marsden (C) Copyright 2000 MPC M.P.E.C. 2000-D36
Read MPEC 2000-D35
Read MPEC 2000-D37
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