Read MPEC 1999-T60
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Read MPEC 1999-T60
Read MPEC 1999-T62
M.P.E.C. 1999-T61 Issued 1999 Oct. 14, 22:14 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.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 WA25
Revision to MPEC 1998-X17
Observations:
J98W25A 3C1999 10 06.55934 03 17 55.98 +17 08 26.3 568
J98W25A 3C1999 10 09.53349 03 17 44.81 +17 07 40.8 568
J98W25A 3C1999 10 09.57011 03 17 44.67 +17 07 40.3 568
Observer details:
568 Mauna Kea. Observers C. Veillet, J. McDonald. Measurer C. Veillet.
3.6-m Canada-France-Hawaii Telescope + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc and reference
991006 568 57.6+ 8.4+ 991009 568 57.8+ 8.7+ MPC 33383
Orbital elements:
1998 WA25
Eccentricity assumed
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Marsden
M 4.88476 (2000.0) P Q
n 0.00351120 Peri. 268.94000 +0.70112976 -0.71292292
a 42.8711727 Node 136.53306 +0.66124688 +0.64351169
e 0.0195449 Incl. 1.04682 +0.26677636 +0.27862809
P 281 H 7.1 G 0.15
Residuals in seconds of arc
981119 695 0.2+ 0.0 981126 695 0.1- 0.1+ 991006 568 0.0 0.2-
981119 695 0.1- 0.1- 981127 695 0.0 0.0 991009 568 0.0 0.0
981119 695 0.0 0.1- 981127 695 0.0 0.2+ 991009 568 0.1+ 0.1+
Ephemeris:
1998 WA25 a,e,i = 42.87, 0.02, 1 q = 42.033
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 10 09 03 17.78 +17 07.8 41.228 42.037 143.7 0.8 23.4
1999 10 19 03 17.10 +17 05.1 41.141 42.037 153.7 0.6 23.4
1999 10 29 03 16.34 +17 02.0 41.082 42.037 163.9 0.4 23.4
1999 11 08 03 15.53 +16 58.8 41.051 42.037 174.0 0.1 23.3
1999 11 18 03 14.70 +16 55.6 41.051 42.037 175.5 0.1 23.3
1999 11 28 03 13.89 +16 52.5 41.082 42.037 165.3 0.3 23.4
1999 12 08 03 13.12 +16 49.6 41.142 42.037 155.0 0.6 23.4
1999 12 18 03 12.43 +16 47.0 41.231 42.037 144.6 0.8 23.4
1999 12 28 03 11.83 +16 44.8 41.344 42.037 134.3 1.0 23.5
2000 01 07 03 11.36 +16 43.2 41.479 42.037 124.0 1.1 23.5
2000 01 17 03 11.04 +16 42.1 41.632 42.037 113.7 1.2 23.5
2000 01 27 03 10.87 +16 41.7 41.796 42.037 103.5 1.3 23.5
2000 02 06 03 10.86 +16 41.9 41.968 42.037 93.4 1.3 23.5
2000 02 16 03 11.02 +16 42.8 42.141 42.037 83.3 1.3 23.5
2000 02 26 03 11.35 +16 44.4 42.311 42.037 73.3 1.3 23.5
2000 03 07 03 11.82 +16 46.5 42.472 42.037 63.4 1.2 23.5
2000 03 17 03 12.44 +16 49.2 42.621 42.037 53.6 1.1 23.5
2000 03 27 03 13.19 +16 52.4 42.751 42.037 43.8 0.9 23.5
2000 04 06 03 14.04 +16 55.9 42.861 42.037 34.2 0.8 23.5
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-T61
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