MPEC 1999-A16: 1998 WT31
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M.P.E.C. 1999-A16 Issued 1999 Jan. 11, 19:56 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
1998 WT31
Observations:
J98W31T* 1998 11 18.11955 02 43 38.73 +17 19 52.0 22.6 R 695
J98W31T 1998 11 18.18843 02 43 38.36 +17 19 50.7 695
J98W31T 1998 11 18.27206 02 43 37.91 +17 19 49.2 695
J98W31T 1998 12 17.93517 02 41 18.13 +17 12 39.5 22.9 R 950
J98W31T 1998 12 17.97547 02 41 17.97 +17 12 39.3 950
J98W31T 1998 12 18.01794 02 41 17.78 +17 12 38.4 950
Observer details:
695 Kitt Peak. Observers R. L. Millis, M. W. Buie, R. M. Wagner, J. L. Elliot.
Measurers M. W. Buie, R. L. Millis, J. L. Elliot. 4-m reflector + CCD.
950 La Palma. Observers M. J. Holman, T. Grav. Measurers T. Grav,
M. J. Holman, M. W. Buie. 2.6-m Nordic Optical Telescope + CCD.
Orbital elements:
1998 WT31
Eccentricity assumed
Epoch 1998 Nov. 23.0 TT = JDT 2451140.5 Marsden
M 0.01809 (2000.0) P Q
n 0.00354585 Peri. 2.75016 +0.71786124 -0.61120187
a 42.5914580 Node 41.72391 +0.62879890 +0.36372612
e 0.0777896 Incl. 30.05538 +0.29880961 +0.70294778
P 278 H 7.1 G 0.15
From 6 observations 1998 Nov. 18-Dec. 18.
Ephemeris:
1998 WT31 a,e,i = 42.59, 0.08, 30 q = 39.278
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 01 02 02 40.50 +17 10.5 38.750 39.278 121.9 1.2 23.2
1999 01 12 02 40.16 +17 09.9 38.905 39.278 111.6 1.3 23.2
1999 01 22 02 40.00 +17 10.1 39.072 39.278 101.4 1.4 23.2
1999 02 01 02 40.00 +17 11.0 39.244 39.278 91.3 1.4 23.2
1999 02 11 02 40.19 +17 12.7 39.418 39.278 81.2 1.4 23.2
1999 02 21 02 40.54 +17 15.2 39.586 39.278 71.2 1.4 23.2
1999 03 03 02 41.06 +17 18.5 39.745 39.278 61.3 1.3 23.2
1999 03 13 02 41.72 +17 22.4 39.890 39.278 51.4 1.1 23.2
1999 03 23 02 42.51 +17 27.0 40.017 39.278 41.7 1.0 23.2
1999 04 02 02 43.41 +17 32.1 40.122 39.278 32.0 0.8 23.2
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-A16
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