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IAUC 5389: 1991d1; 1991bf; R CrB; 1991s

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IAUC number 

                                                  Circular No. 5389
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 (1991d1)
     Carolyn S. and Eugene M. Shoemaker and David H. Levy report
their discovery of another comet on films exposed with the 0.46-m
Schmidt telescope at Palomar, as shown below.  The comet is diffuse
with condensation; the image on Nov. 15 may be involved with a faint
star.  The comet appears as a very diffuse trail on a 48-min plate
taken by C. Brewer with the Oschin Schmidt telescope on Nov. 16.

     1991 UT             R.A. (1950) Decl.        m1
     Nov. 13.34878    3 28 58.30   +44 07 15.9   16.5
          13.37969    3 28 57.61   +44 07 09.9
          15.35972    3 28 24.75   +44 00 51.6


SUPERNOVA 1991bf IN ESO 471-G30
     R. H. McNaught, Anglo-Australian Observatory, reports his
discovery of an apparent supernova (mag about 17.5) in ESO 471-G30 (=
MCG -05-56-27) on an I plate taken Nov. 13.4 UT by K. S. Russell
with the U.K. Schmidt Telescope.  The supernova is located at R.A. =
23h49m40s.10, Decl. = -29 43'10".6 (equinox 1950.0, uncertainty 0".2
in R.A. and 0".6 in Decl.), or 12".1 west and 23".0 north of the
center of the galaxy.  No star appears in this position on the SERC
J or the ESO R and B surveys.  A nearby star (mag about 18.5) is
situated closer to the nucleus (6".7 west and 17".6 north) with end
figures 40s.52, 16".0.


R CORONAE BOREALIS
     Visual magnitude estimates (cf. IAUC 5379):  Nov. 6.78 UT, 6.3
(A. Pereira, Cabo da Roca, Portugal); 9.80, 6.6 (R. Goncalves,
Oeiras, Portugal); 10.72, 6.3 (L. T. Heen, Trondheim, Norway);
11.75, 6.8 (M. Tombelli, Montelupo, Italy); 13.73, 6.5 (B. H.
Granslo, Fjellhamar, Norway); 14.75, 7.0 (Tombelli); 17.75, 7.2
(Tombelli).


PERIODIC COMET WIRTANEN (1991s)
     Total visual magnitude estimates (cf. IAUC 5367):  Oct. 19.51
UT, 10.3 (A. Hale, Las Cruces, NM, 0.41-m reflector); Nov. 3.52,
11.0 (C. S. Morris, Pine Mountain Club, CA, 0.26-m reflector);
12.53, 11.4 (Morris).


1991 November 18               (5389)             Daniel W. E. Green

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