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IAUC 5336: SNe; 1991p

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IAUC number 

                                                  Circular No. 5336
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


SUPERNOVAE
     J. Mueller reports her discovery of three supernovae on plates
taken by J. D. Mendenhall and herself with the 1.2-m Oschin Telescope
at Palomar in the course of the Second Sky Survey:

     SN 1991as is 8".7 east and 13".4 south of the center of an
anonymous galaxy at R.A. = 22 46 10, Decl. = +7 54.6 (equinox 1950.0)
and was of mag about 18 (blue) on Aug. 19 UT.  An observation soon
afterward by N. Reid with the Palomar 1.5-m reflector + CCD direct
camera gave I = 17.9.  A spectrum obtained on Sept. 4 by M. Schmidt,
J. Gunn and D. Schneider with the Hale 5-m telescope (+ 4 shooter +
spectrograph) tentatively indicates that this supernova is of type I.

     SN 1991at is 20" east and 34" north of the nucleus of UGC 733
(R.A. = 1 08.0, Decl. = +16 20, equinox 1950.0) and was also of mag
about 18 (blue) on Aug. 19 UT.  The object is not on a red PSS II
plate taken by Mueller on 1987 Oct. 18.  A 1991 Sept. 4 spectrum by
Schmidt et al. tentatively indicates that this supernova is also of
type I.

     SN 1991au is 14" west and 2" south of the nucleus of UGC 11616
(R.A. = 20 40.3, Decl. = +63 19, equinox 1950.0) and was of mag about
18.5 (red) on Sept. 1 UT.  A spectrum obtained by Schmidt et al. on
Sept. 4 tentatively indicates that this is a type II supernova.


PERIODIC COMET SHOEMAKER 1 (1991p)
     Ephemeris continuation (cf. IAUC 5286) from the orbital elements
on MPC 18598:

     1991 ET      R.A. (1950) Decl.     Delta      r       m2
     Sept. 1    20 28.97    -37 27.3    1.309    2.176    17.0
          11    20 22.24    -34 29.4
          21    20 19.79    -31 20.6    1.402    2.116    17.0
     Oct.  1    20 21.34    -28 09.3
          11    20 26.38    -25 00.2    1.550    2.065    17.1
          21    20 34.36    -21 55.2
          31    20 44.72    -18 54.4    1.731    2.026    17.3
     Nov. 10    20 57.00    -15 56.8
          20    21 10.84    -13 01.1    1.925    2.000    17.4
          30    21 25.90    -10 06.1
     Dec. 10    21 41.95    - 7 10.8    2.121    1.987    17.6


1991 September 5               (5336)              Brian G. Marsden

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