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IAUC 3974: 1984j; 1984k; NOVAE IN M87

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IAUC number 

                                                  Circular No. 3974
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


PERIODIC COMET TAKAMIZAWA (1984j)
     Improved orbital elements from 35 observations July 6-Aug. 8:

         T = 1984 May 24.9464 ET
     Peri. = 147.5732                    e =   0.574508
     Node  = 124.2395   1950.0           a =   3.751186 AU
     Incl. =   9.4920                    n =   0.1356598
         q =   1.596101 AU               P =   7.265 years

     1984 ET     R.A. (1950.0) Decl.      p        r       m1

     Aug. 28    21 06.24    -23 40.7    0.890    1.861     9.9
     Sept. 7    21 07.35    -24 27.5
          17    21 10.97    -24 44.8    1.097    1.965    10.6
          27    21 16.97    -24 37.2
     Oct.  7    21 25.09    -24 08.9    1.365    2.078    11.4
          17    21 34.92    -23 24.0
          27    21 46.11    -22 25.8    1.679    2.196    12.0
     Nov.  6    21 58.35    -21 16.8
          16    22 11.34    -19 59.2    2.025    2.319    12.7
          26    22 24.88    -18 34.9
     Dec.  6    22 38.81    -17 05.2    2.388    2.443    13.3


PERIODIC COMET AREND-RIGAUX (1984k)
     The following precise position, by T. Seki, Geisei, corrects
that on IAUC 3972:

         1984 UT               R.A.   (1950.0)   Decl.

         Aug.  8.76667       3 51 23.04      + 0 49 36.4


NOVAE IN M87
     C. J. Pritchet, University of Victoria: and S. van den Bergh,
Dominion Astrophysical Observatory, report the discovery of two
ordinary novae in the Virgo-cluster galaxy M87.  The observations
were made on five nights with a CCD detector at the prime focus of
the Canada-France-Hawaii telescope.  The first nova, 53" east and
48" south of the nucleus, reached maximum B ~ 24.9 on or before
Feb. 24.  The second nova, 43" east and 15" south of the nucleus,
reached B ~ 24.1 on or just after Feb. 28.  The novae were above
the detection limit B = 25.5 on two and five nights, respectively.


1984 August 20                 (3974)              Brian G. Marsden

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