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IAUC 7053: C/1998 W1; LEONID METEORS 1998

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                                                  Circular No. 7053
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 W1 (SPAHR)
     The following CCD astrometric positions have been reported:

     1998 UT             R.A. (2000) Decl.        m1    Observer
     Nov. 17.91109    4 32 18.15   -10 25 02.0          Manca
          17.96348    4 32 15.62   -10 24 36.0   16     Tichy
          17.96637    4 32 15.46   -10 24 34.4            "
          17.98176    4 32 14.80   -10 24 26.8          Mikuz
          18.04478    4 32 11.80   -10 23 56.6            "
          18.17402    4 32 06.56   -10 22 51.6   16.1   Kowalski
          18.18895    4 32 05.92   -10 22 44.8   15.9     "
          18.29858    4 32 00.83   -10 21 50.5          Spahr
          18.47045    4 31 52.60   -10 20 24.8            "
          18.47565    4 31 53.30   -10 20 23.4          Kojima
          18.49824    4 31 52.19   -10 20 11.8   15.7     "

F. Manca, A. Testa and V. Giuliani (Sormano).  0.5-m reflector.
M. Tichy and Z. Moravec (Klet).  0.57-m f/5.2 reflector.
H. Mikuz and S. Maticic (Crni vrh).  0.36-m f/6.7 Schmidt-Cassegrain.
R. Kowalski (Zephyrhills).  0.18-m f/9.4 reflector.  Coma < 1'.
T. B. Spahr (Catalina Sky Survey).  0.41-m f/3 Schmidt.
T. Kojima (Chiyoda).  0.25-m f/6 reflector.  Communicated by S. Nakano.

     A parabolic orbit follows.  The comet is probably of short period.

     T = 1999 Feb. 20.762 TT          Peri. =  18.976
                                      Node  =  92.924   2000.0
     q = 1.58362 AU                   Incl. =  29.332

1998 TT     R. A. (2000) Decl.     Delta      r    Elong. Phase      m1
Nov. 18     4 32.23    -10 24.2    1.125    2.027  147.0   15.4     15.8
     23     4 28.24    - 9 36.7    1.075    1.987  148.9   14.9     15.6
     28     4 23.69    - 8 33.6    1.031    1.949  150.1   14.6     15.5
Dec.  3     4 18.74    - 7 13.6    0.992    1.912  150.4   14.7     15.3


LEONID METEORS 1998
     Numerous further reports received by Central Bureau generally confirm
an extended shower with a preponderance of bright fireballs and a general
maximum zenithal hourly rate of perhaps 500.  Although impressive, the
display was a far cry from the Leonid storms of 1799, 1833 and 1966.

                      (C) Copyright 1998 CBAT
1998 November 18               (7053)              Brian G. Marsden

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