MPEC 2000-Y36: 1998 WY31
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M.P.E.C. 2000-Y36 Issued 2000 Dec. 23, 14:44 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
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 WY31
Revision to MPEC 1999-B26
Observations:
J98W31Y C2000 12 22.41733 04 56 51.41 +23 04 29.2 23.3 R 568
J98W31Y C2000 12 23.36594 04 56 46.85 +23 04 22.4 568
J98W31Y C2000 12 23.43951 04 56 46.50 +23 04 21.9 568
Observer details:
568 Mauna Kea. Observers C. Veillet, A. Doressoundiram, J. Shapiro. 3.6-m
Canada-France-Hawaii Telescope + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc and reference
001222 568 21.2- 1.2- 001223 568 21.5- 1.4- MPC 33766
Orbital elements:
1998 WY31
Eccentricity assumed
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Marsden
M 94.22267 (2000.0) P Q
n 0.00323904 Peri. 276.74610 +0.94153827 +0.33548432
a 45.2403049 Node 63.65572 -0.29387360 +0.86268996
e 0.0134974 Incl. 1.97720 -0.16475436 +0.37843931
P 304 H 7.2 G 0.15
Residuals in seconds of arc
981118 695 0.1- 0.0 990115 695 0.2- 0.0 001223 568 0.1- 0.1-
981118 695 0.1+ 0.1+ 001222 568 0.2+ 0.1+
990115 695 0.2+ 0.0 001223 568 0.2- 0.1-
Ephemeris:
1998 WY31 a,e,i = 45.24, 0.01, 2 q = 44.630
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 12 22 04 56.89 +23 04.5 44.339 45.290 165.1 0.3 23.8
2001 01 01 04 56.12 +23 03.4 44.399 45.290 154.7 0.5 23.8
2001 01 11 04 55.42 +23 02.3 44.488 45.291 144.4 0.7 23.8
2001 01 21 04 54.83 +23 01.4 44.601 45.291 134.0 0.9 23.9
2001 01 31 04 54.36 +23 00.7 44.736 45.291 123.8 1.0 23.9
2001 02 10 04 54.03 +23 00.2 44.888 45.292 113.5 1.1 23.9
2001 02 20 04 53.85 +22 59.9 45.053 45.292 103.4 1.2 23.9
2001 03 02 04 53.84 +22 59.8 45.224 45.292 93.3 1.3 23.9
2001 03 12 04 54.00 +23 00.0 45.397 45.293 83.4 1.2 23.9
2001 03 22 04 54.31 +23 00.5 45.566 45.293 73.5 1.2 23.9
2001 04 01 04 54.77 +23 01.2 45.727 45.293 63.7 1.1 23.9
2001 04 11 04 55.38 +23 02.1 45.875 45.294 54.0 1.0 23.9
2001 04 21 04 56.11 +23 03.2 46.007 45.294 44.4 0.9 23.9
2001 05 01 04 56.94 +23 04.5 46.118 45.294 34.8 0.7 23.9
Brian G. Marsden (C) Copyright 2000 MPC M.P.E.C. 2000-Y36
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