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IAUC 7063: C/1998 W3

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                                                  Circular No. 7063
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET C/1998 W3 (LINEAR)
     The following CCD observations are available of an object among several
recognized by the LINEAR Team as having unusual motion and placed in The
NEO Confirmation Page.  On reporting astrometric follow-up, G. Hug,
Farpoint Observatory, Eskridge, KS, noted the object's appearance as
probably cometary, a point confirmed by other observers on request from
the Central Bureau and by the near-parabolic retrograde orbit.

     1998 UT             R.A. (2000) Decl.        m1    Observer
     Nov. 25.29950    8 46 07.70   +29 49 30.4   18.4   Blythe
          25.31005    8 46 07.36   +29 49 38.0   18.4     "
          25.32060    8 46 06.84   +29 49 47.1   18.1     "
          25.33119    8 46 06.42   +29 49 53.6   18.1     "
          25.34174    8 46 05.98   +29 50 01.9   18.1     "
          26.36627    8 45 24.46   +30 02 11.7          Hug
          26.37038    8 45 24.16   +30 02 16.8            "
          26.37848    8 45 23.68   +30 02 23.2            "
          27.42897    8 44 39.41   +30 15 04.9   19.0   Cooney
          27.44056    8 44 38.81   +30 15 12.4   18.5     "
          27.44281    8 44 38.82   +30 15 13.5   19.3     "
          28.04905    8 44 12.55   +30 22 33.1          Ticha
          28.05166    8 44 12.43   +30 22 35.0            "
          28.05347    8 44 12.36   +30 22 36.8            "
          28.05530    8 44 12.29   +30 22 37.8            "
          28.05714    8 44 12.22   +30 22 39.1   16.3     "
          28.05899    8 44 12.10   +30 22 40.5            "

M. Blythe, F. Shelly and M. Bezpalko (Socorro).  Measurers J. Stuart,
   H. Viggh and R. Sayer.  1-m f/2.15 reflector.
G. Hug (Eskridge).  0.3-m Schmidt-Cassegrain.  Object diffuse.
W. R. Cooney (Baton Rouge).  0.51-m refl.  Faint but probably diffuse.
J. Ticha and M. Tichy (Klet).  0.57-m f/5.2 reflector.  15" coma, no tail.

     T = 1999 Feb.  9.201 TT          Peri. =  23.226
                                      Node  = 124.163   2000.0
     q = 4.86339 AU                   Incl. = 130.222

1998 UT     R. A. (2000) Decl.     Delta      r    Elong. Phase      m1
Nov. 28     8 44.24    +30 22.0    4.335    4.897  119.5   10.1     16.1
Dec.  3     8 40.29    +31 24.1    4.255    4.892  125.4    9.5     16.0
      8     8 35.69    +32 28.5    4.182    4.888  131.3    8.7     16.0
     13     8 30.45    +33 34.6    4.116    4.885  137.2    7.9     16.0

                      (C) Copyright 1998 CBAT
1998 November 28               (7063)              Brian G. Marsden

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