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IAUC 5338: 1991av; 1991 RC

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IAUC number 

                                                  Circular No. 5338
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


SUPERNOVA 1991av IN ANONYMOUS GALAXY
     J. Mueller reports her discovery of a supernova at R.A. =
21 53 28.5, Decl. = +0 45 38 (equinox 1950.0), 7".4 east and 4".7
north of the nucleus of an anonymous galaxy.  The supernova was of mag
about 18 (red) on a plate taken on Sept. 4 by C. Brewer and herself
with the 1.2-m Oschin telescope in the course of PSS II.  A spectrum
obtained by M. Schmidt and D. Schneider with the 5-m Hale telescope (+
4 shooter + spectrograph) on Sept. 6 shows it to be of type II.


1991 RC
     R. H. McNaught, Anglo-Australian Observatory, reports his
discovery of a fast-moving asteroidal object on exposures by K. S.
Russell and S. M. Hughes with the U.K. Schmidt:

     1991 UT             R.A. (1950) Decl.        V
     Sept. 3.59023   22 23 06.59   - 7 03 58.8   18
           3.64231   22 22 57.12   - 7 05 28.4
           5.56608   22 17 31.53   - 7 57 52.0
           5.58344   22 17 28.49   - 7 58 20.8

     The following orbital elements are uncertain, but it seems rather
likely that the object is of Apollo type:

     T = 1991 May 25.279 ET           Peri. =  26.015
     e = 0.67630                      Node  = 165.393   1950.0
     q = 0.38880 AU                   Incl. =   7.533
       a =  1.20111 AU     n = 0.748736     P =   1.32 years

     1991 ET      R.A. (1950) Decl.     Delta      r        V
     Sept. 1    22 31.08    - 5 47.1    0.474    1.482    17.5
           6    22 16.36    - 8 09.3
          11    22 04.34    -10 05.3    0.570    1.559    18.4
          16    21 54.88    -11 37.7
          21    21 47.76    -12 49.7    0.689    1.629    19.2
          26    21 42.68    -13 44.6
     Oct.  1    21 39.37    -14 25.4    0.825    1.693    19.9
           6    21 37.58    -14 54.4
          11    21 37.11    -15 13.6    0.974    1.749    20.4


1991 September 7               (5338)              Brian G. Marsden

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