MPEC 2000-Y34 : 1998 WT31
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M.P.E.C. 2000-Y34 Issued 2000 Dec. 23, 00:17 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 WT31
Revision to MPEC 1999-A16
Observations:
J98W31T C1999 11 30.20597 02 47 23.35 +18 27 08.3 22.5 R 695
J98W31T DC1999 11 30.21307 02 47 23.31 +18 27 08.2 695
J98W31T C1999 11 30.33792 02 47 22.67 +18 27 06.2 22.3 R 695
J98W31T C1999 11 30.34501 02 47 22.64 +18 27 06.2 22.3 R 695
J98W31T C2000 12 21.32043 02 50 35.99 +19 32 23.3 568
J98W31T C2000 12 21.41583 02 50 35.65 +19 32 22.1 568
J98W31T C2000 12 22.29839 02 50 32.35 +19 32 11.7 568
Observer details:
568 Mauna Kea. Observers C. Veillet, A. Doressoundiram, J. Shapiro. 3.6-m
Canada-France-Hawaii Telescope + CCD.
695 Kitt Peak. Observers J. W. Parker. 4-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees) and reference
991130 695 0.08+ 0.03+ 001222 568 0.17+ 0.06+ MPC 33766
Orbital elements:
1998 WT31
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Marsden
M 336.46197 (2000.0) P Q
n 0.00311608 Peri. 41.28119 +0.17768194 -0.93134057
a 46.4226750 Node 41.58420 +0.72939943 -0.09218804
e 0.1909089 Incl. 28.61386 +0.66061002 +0.35228697
P 316 H 7.0 G 0.15 U 4
Residuals in seconds of arc
981118 695 0.1- 0.2+ 981218 950 0.2- 0.2- 001221 568 0.1- 0.1+
981118 695 0.0 0.0 991130 695 0.0 0.0 001221 568 0.2+ 0.0
981118 695 0.0 0.1- 991130 695 0.0 0.0 001222 568 0.2- 0.1-
981217 950 0.2+ 0.1- 991130 695 0.0 0.1-
981217 950 0.1+ 0.2+ 991130 695 0.1+ 0.1+
Ephemeris:
1998 WT31 a,e,i = 46.42, 0.19, 29 q = 37.560
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 12 22 02 50.56 +19 32.3 37.977 38.685 135.5 1.0 23.0
2001 01 01 02 50.01 +19 30.6 38.107 38.682 125.2 1.2 23.0
2001 01 11 02 49.63 +19 29.5 38.254 38.680 115.0 1.3 23.0
2001 01 21 02 49.41 +19 29.0 38.415 38.677 104.7 1.4 23.1
2001 01 31 02 49.37 +19 29.4 38.583 38.674 94.6 1.5 23.1
2001 02 10 02 49.52 +19 30.4 38.753 38.671 84.5 1.5 23.1
2001 02 20 02 49.85 +19 32.3 38.921 38.668 74.5 1.4 23.1
2001 03 02 02 50.34 +19 35.0 39.081 38.666 64.6 1.3 23.1
2001 03 12 02 50.99 +19 38.3 39.228 38.663 54.8 1.2 23.1
2001 03 22 02 51.78 +19 42.4 39.358 38.660 45.0 1.0 23.1
2001 04 01 02 52.69 +19 47.0 39.467 38.657 35.4 0.9 23.1
Brian G. Marsden (C) Copyright 2000 MPC M.P.E.C. 2000-Y34
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