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IAUC 4007: 1984t; 1984r; SN IN IC 4839

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IAUC number 

                                                  Circular No. 4007
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


COMET LEVY-RUDENKO (1984t)
     Independent reports of the discovery of a new comet have been
received from David Levy (0.40-m f/5 reflector) and Michael Rudenko
(0.15-m refractor, 30 x).  Available observations follow:

      1984 UT        R.A. (1950.0)  Decl.     mQ     Observer

      Nov. 14.12    18 47      + 9 50     8.5    Levy
           14.96    18 47.4    +10 10            Schwartz
           15.00    18 47.4    +10 10     9.5    Meier
           15.05    18 47.5    +10 15    10.5    Rudenko
           15.08    18 47.4    +10 13     9.5    Levy

D. H. Levy (Tucson, AZ).  Diffuse; no condensation; no tail.
G. Schwartz (Oak Ridge Observatory).  0.40-m astrograph.  Faint
   image not detected until Meier and Rudenko observations known.
R. Meier (Nepean, ON).  0.44-m reflector, 62 x.  Some condensation.
M. Rudenko (Amherst, MA).  Very diffuse, diameter < 2'; no tail.


COMET SHOEMAKER (1984r)
     Precise positions obtained by J. Gibson at Palomar, with the
1.2-m Schmidt on Nov. 2-3, with the 1.5-m reflector on Nov. 4-5:

         1984 UT              R.A.   (1950.0)    Decl.

         Nov.  2.17120       3 11 30.86      +17 39 56.2
               2.47606       3 11 05.05      +17 38 12.6
               3.34377       3 09 52.06      +17 33 16.0
               4.32147       3 08 29.59      +17 27 37.1
               5.34222       3 07 03.33      +17 21 42.1

     New parabolic elements from 11 observations Oct. 23-Nov. 5:

         T = 1984 Sept.22.953 ET  Peri. = 185.196
                                  Node  = 237.871   1950.0
         q =   5.49985 AU         Incl. = 179.203


SUPERNOVA IN IC 4839
     B. J. Jarvis and M. M. Phillips, Cerro Tololo Interamerican
Observatory, report that an SIT-vidicon spectrum obtained with the
4-m telescope on Oct. 28.04 UT shows the supernova to be of type
I, approximately 1-3 weeks past maximum.


1984 November 15               (4007)              Brian G. Marsden

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