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IAUC 8623: 73P; 2005hg

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                                                  Circular No. 8623
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)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET 73P/SCHWASSMANN-WACHMANN
     C. W. Hergenrother, Lunar and Planetary Laboratory, reports
his recovery of this comet on images taken with the 1.2-m reflector
(+ Gunn r filter) at Mount Hopkins in bright moonlight, the
observations below apparently belonging to component C.  The comet
is strongly condensed with a coma 6" in diameter and a short fan
tail 8" long in p.a. 300 deg.

     2005 UT             R.A. (2000) Decl.       Mag.
     Oct. 22.49350   10 52 53.72   +16 59 35.6
          22.50150   10 52 54.44   +16 59 31.9
          22.50970   10 52 55.14   +16 59 28.7
          22.51780   10 52 55.82   +16 59 25.8   19.3
          24.49490   10 55 48.12   +16 46 51.6
          24.50334   10 55 48.76   +16 46 46.9
          24.51130   10 55 49.46   +16 46 45.8   19.2

     The following orbital elements by B. G. Marsden are from 224
observations, 1995-2005 (mean residual 0".7; nongravitational
parameters A_1 = +1.33, A_2 = -0.0520).  The correction to the
prediction by S. Nakano (MPC 48382; 2005 Comet Handbook) is
Delta(T) = -0.43 day.  Component C will pass 0.08 AU from the
earth on 2006 May 12.  Predictions for the components seen at
previous returns have been made recently by Sekanina (CBET 237;
ICQ 27, 225).

                    Epoch = 2006 May  25.0 TT
     T = 2006 June  6.9497 TT         Peri. = 198.8039
     e = 0.693192                     Node  =  69.8955  2000.0
     q = 0.939135 AU                  Incl. =  11.3960
       a =  3.060989 AU    n = 0.1840396    P =   5.355 years


SUPERNOVA 2005hg IN UGC 1394
     Further to IAUC 8616, K. Shimasaki and W. Li report the LOSS
discovery of an apparent supernova on unfiltered KAIT images taken
on Oct. 25.27 (at mag 18.6) and 26.25 UT (mag 18.5).  SN 2005hg is
located at R.A. = 1h55m41s.87, Decl. = +46o47'47".4 (equinox
2000.0), which is 3".7 west and 19".6 south of the nucleus of UGC
1394.  KAIT images taken on Oct. 12.25 (limiting mag 20.0) and
20.24 (limiting mag 19.5) showed nothing at this position.  SN
2002gc also appeared in UGC 1394.

                      (C) Copyright 2005 CBAT
2005 October 26                (8623)            Daniel W. E. Green

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