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IAUC 5175: 1991d; 1954ad; 1990c

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IAUC number 

                                                  Circular No. 5175
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


COMET SHOEMAKER-LEVY (1991d)
     Carolyn S. Shoemaker, Eugene M. Shoemaker, and David H. Levy
report their discovery of a comet, as follows:

     1991 UT             R.A. (1950) Decl.        m1    Observer
     Jan. 22.42569    9 38 45.73   - 2 01 18.2   15.5   Shoemaker
          22.45469    9 38 44.45   - 2 01 01.1            "
          28.76094    9 34 05.39   - 0 53 19.4   15.5   McNaught

C. S. Shoemaker, E. M. Shoemaker, and D. H. Levy (Palomar).  0.46-m
  Schmidt telescope films.  Comet diffuse with strong condensation
  and possible hint of a tail.
R. H. McNaught (Siding Spring).  Uppsala Southern Schmidt telescope.
  Comet strongly condensed.


SUPERNOVA 1954ad IN UGC 4467
     J. Mueller reports her discovery on prints from the first Palomar
Sky Survey of an apparent supernova (mag about 17.5) in UGC 4467
(R.A. = 8h30m.2, Decl. = +0 24', equinox 1950.0).  The object is
6".7 west and 5".4 south of the galaxy's center.  The plates were
taken 1954 Dec. 21 UT by R. G. Harrington.  No image appears at the
position to a limiting mag of B about 21 on a plate taken by Mueller
and J. D. Mendenhall on 1991 Jan. 19 with the 1.2-m Oschin Telescope
in the course of the second Palomar Sky Survey.  CCD images with a
Gunn R filter obtained by S. Staples with the Palomar 1.5-m
telescope show no image at the position to limiting mag about 21.5.


COMET LEVY (1990c)
     W. G. Weller, Cerro Tololo Interamerican Observatory; and K. J.
Meech and T. L. Farnham, Institute for Astronomy, University of
Hawaii, report:  "A 60-min IIIa-J unfiltered plate taken of comet
Levy with the CTIO Burrell Schmidt telescope on Jan. 24.32 UT shows
both the tail and anti-tail reported on IAUC 5163.  The faint plasma
tail at p.a. about 310 deg shows well-defined structure out to a
projected distance of at least 8.5 x 10E5 km, and is visible to at
least 6 x 10E6 km (1.8 deg).  The anti-tail, at p.a. about 150-155
deg, is visible out to at least 3 x 10E6 km."


1991 January 28                (5175)             Daniel W. E. Green

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