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    • 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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