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IAUC 5349: 1991ax; 1991 EE; P/SCHWASSMANN-WACHMANN 1

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                                                  Circular No. 5349
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 1991ax IN ANONYMOUS GALAXY
     R. H. McNaught, Anglo-Australian Observatory, reports his
discovery of an apparent supernova in an anonymous galaxy on a B plate
taken by M. J. Drinkwater with the U.K. Schmidt Telescope on Sept.
15.77 UT.  The supernova, of B about 16.5, has coordinates R.A. =
3h03m21s.60, Decl. = -41d57'45".4 (equinox 1950.0, uncertainty about
1" in each coordinate, badly situated with respect to reference stars,
in corner of plate) and is offset from the ill-defined nucleus by 11"
west, 1" north, on the edge of the galaxy.  No star appears in this
position on the ESO B, R, SERC J or R surveys.


1991 EE
     Improved orbital elements from MPC 18825:

                    Epoch = 1991 Dec. 10.0 ET
     T = 1991 July 28.7207 ET         Peri. = 115.0675
     e = 0.624156                     Node  = 168.4724  1950.0
     q = 0.844273 AU                  Incl. =   9.7652
       a =  2.246339 AU    n = 0.2927462    P =   3.367 years

     1991 ET      R.A. (1950) Decl.     Delta      r       V
     Sept.21    22 43.05    -16 46.8    0.144    1.139    14.6
          26    23 07.36    -17 13.1
     Oct.  1    23 22.40    -17 11.5    0.245    1.227    15.9
           6    23 32.79    -16 55.6
          11    23 40.66    -16 30.3    0.356    1.318    16.9
          16    23 47.13    -15 58.2
          21    23 52.79    -15 21.1    0.479    1.410    17.8
          26    23 58.01    -14 40.1
          31     0 03.01    -13 55.9    0.614    1.501    18.5


PERIODIC COMET SCHWASSMANN-WACHMANN 1
     Total visual magnitudes: Aug. 10.06 UT, 12.4 (H. Mikuz,
Ljubljana, Yugoslavia, 0.36-m reflector); 11.41, 11.9 (C. S. Morris,
Lockwood Valley, CA, 0.51-m reflector); 12.44, 12.1 (A. Hale, Las
Cruces, NM, 0.41-m reflector); 16.98, 12.7 (B. H. Granslo, Fjellhamar,
Norway, 0.20-m reflector); 20.09, 13.0 (Mikuz); 21.08, 12.8 (S. Garro,
Merlette, France, 0.20-m reflector); 22.08, 12.8 (Garro); Sept. 7.5,
[13.5 (Hale); 11.10, 14.0: (Mikuz).


1991 September 17              (5349)              Brian G. Marsden

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