• Processing (Info)

    • MPEC 1999-A18 : 1998 WV31

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    M.P.E.C. 1999-A18                                Issued 1999 Jan. 11, 20:25 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 WV31

Observations:
     J98W31V*  1998 11 19.09014 02 29 45.19 +12 45 25.3          22.3 R      695
     J98W31V   1998 11 19.17149 02 29 44.73 +12 45 23.3                      695
     J98W31V   1998 11 19.24648 02 29 44.29 +12 45 21.6                      695
     J98W31V   1998 12 17.85605 02 27 26.66 +12 36 04.9          22.6 R      950
     J98W31V   1998 12 17.88994 02 27 26.54 +12 36 04.3                      950
     J98W31V   1998 12 17.92538 02 27 26.40 +12 36 03.8                      950
     J98W31V   1998 12 18.83184 02 27 23.12 +12 35 52.0          22.6 R      950
     J98W31V   1998 12 18.88479 02 27 22.93 +12 35 51.0                      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 WV31
The following assumed perihelic 2:3 Neptune-resonance orbital elements
keep the object more than 10 AU from Neptune over a 14 000-year period
Epoch 1998 Nov. 23.0 TT = JDT 2451140.5                 Marsden
M   0.01624              (2000.0)            P               Q
n   0.00396727     Peri.  340.17967     +0.76870186     -0.63432774
a  39.5192215      Node    59.46386     +0.59892246     +0.66886381
e   0.1729666      Incl.    5.46378     +0.22447570     +0.38762034
P 248              H    7.7           G   0.15
From 8 observations 1998 Nov. 19-Dec. 18.  E-assumed.

Ephemeris:
1998 WV31                a,e,i = 39.52, 0.17, 5                  q = 32.684
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1999 01 02    02 26.71   +12 33.8   32.221   32.684   117.3     1.5    23.0
1999 01 12    02 26.46   +12 33.4   32.382   32.684   107.0     1.6    23.0
1999 01 22    02 26.41   +12 34.1   32.552   32.684    96.9     1.7    23.1
1999 02 01    02 26.57   +12 35.8   32.725   32.684    86.7     1.7    23.1
1999 02 11    02 26.93   +12 38.5   32.897   32.684    76.7     1.7    23.1
1999 02 21    02 27.48   +12 42.2   33.061   32.684    66.8     1.6    23.1
1999 03 03    02 28.22   +12 46.6   33.215   32.684    56.9     1.5    23.1
1999 03 13    02 29.12   +12 51.8   33.352   32.684    47.1     1.3    23.1
1999 03 23    02 30.17   +12 57.6   33.469   32.684    37.5     1.1    23.1

Brian G. Marsden             (C) Copyright 1999 MPC           M.P.E.C. 1999-A18

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