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IAUC 5088: 1990aa; 1988Z; 1987A; 1990 OL

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IAUC number 

                                                  Circular No. 5088
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 1990aa
     M. Richmond, University of California at Berkeley, informs us that
the "anonymous" host galaxy for this supernova (IAUC 5087) is probably
UGC 00540 = MCG +05-03-016.


SUPERNOVA 1988Z IN MCG +03-28-022
     R. A. Stathakis and E. M. Sadler, Anglo-Australian Observatory,
report: "SN 1988Z continues to fade very slowly.  CCD images taken with
the Anglo-Australian Telescope on 1990 June 22.35 UT showed the
supernova at V = 19.5, R = 18.5, a decline of only three magnitudes in V
since Dec. 1988.  A spectrum taken on 1990 Mar. 21.53 UT covering
530-1020 nm shows narrow (FWHM = 2000 km/s) emission lines of H alpha,
He I and O I 845 nm.  In addition, weak, broad, emission lines of H
alpha, O I 845 nm and Ca II 854 + 866 nm extend to 10 000 km/s.  We urge
observers to continue to monitor this unusual supernova.


SUPERNOVA 1987A IN THE LARGE MAGELLANIC CLOUD
     Corrigendum.  On IAUC 5086, line 11, for 2.0 mJy read 2.6 mJy.


1990 OL
     Improved orbital elements from MPC 16882:

     T = 1990 July 20.9611 ET         Peri. = 155.2556
     e = 0.453795                     Node  = 150.4061  1950.0
     q = 1.468942 AU                  Incl. =  14.8079
       a =  2.689359 AU    n = 0.2234760    P =   4.410 years

     1990 ET      R.A. (1950) Decl.     Delta      r        V
     Sept. 6    21 49.46    -17 31.4    0.547    1.535    16.3
          16    21 55.99    -20 46.0
          26    22 04.54    -22 50.7    0.685    1.598    17.2
     Oct.  6    22 15.08    -23 52.4
          16    22 27.27    -24 02.5    0.879    1.677    18.0
          26    22 40.78    -23 31.8
     Nov.  5    22 55.29    -22 30.4    1.117    1.768    18.6


1990 September 5               (5088)              Brian G. Marsden

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