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    • MPEC 1999-B26 : 1998 WY31

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    M.P.E.C. 1999-B26                                Issued 1999 Jan. 28, 23:40 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 WY31

Observations:
     J98W31Y* C1998 11 18.42696 04 49 19.14 +22 47 19.1          23.1 R      695
     J98W31Y  C1998 11 18.49839 04 49 18.81 +22 47 18.7                      695
     J98W31Y  C1999 01 15.19486 04 44 53.45 +22 39 55.9          23.7 R      695
     J98W31Y  C1999 01 15.29128 04 44 53.08 +22 39 55.3                      695

Observer details:
695 Kitt Peak.  Observers R. L. Millis, M. W. Buie, R. M. Wagner, J. L.
    Elliot, D. W. Willmarth, P. S. Smith, D. L. Harmer, A. Saha.  Measurers
    M. W. Buie, R. L. Millis, J. L. Elliot.  4-m reflector + CCD, 3.6-m
    WIYN Telescope + CCD.

Orbital elements:
1998 WY31
Assumed circular orbit
Epoch 1998 Dec. 13.0 TT = JDT 2451160.5                 Marsden
                         (2000.0)            P               Q
n   0.00323918  Arg.lat.    9.86022     +0.28492712     -0.95805729
a  45.2389601      Node    63.59067     +0.87709996     +0.24766115
e   0.0000000      Incl.    1.96462     +0.38666808     +0.14418805
P 304              H    7.2           G   0.15
From 4 observations 1998 Nov. 18-1999 Jan. 15.

Ephemeris:
1998 WY31                a,e,i = 45.24, 0.00, 2
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1999 01 22    04 44.52   +22 39.3   44.586   45.239   131.1     0.9    23.9
1999 02 01    04 44.09   +22 38.5   44.726   45.239   120.9     1.1    23.9
1999 02 11    04 43.81   +22 38.0   44.881   45.239   110.7     1.2    23.9
1999 02 21    04 43.68   +22 37.7   45.048   45.239   100.5     1.2    23.9
1999 03 03    04 43.72   +22 37.8   45.220   45.239    90.5     1.3    23.9
1999 03 13    04 43.92   +22 38.1   45.392   45.239    80.5     1.2    23.9
1999 03 23    04 44.28   +22 38.8   45.559   45.239    70.6     1.2    23.9
1999 04 02    04 44.78   +22 39.7   45.717   45.239    60.9     1.1    23.9
1999 04 12    04 45.42   +22 40.8   45.860   45.239    51.2     1.0    23.9
1999 04 22    04 46.18   +22 42.2   45.986   45.239    41.6     0.8    23.9
1999 05 02    04 47.04   +22 43.7   46.090   45.239    32.0     0.7    23.9

Brian G. Marsden             (C) Copyright 1999 MPC           M.P.E.C. 1999-B26

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