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IAUC 5464: 1992I; 1991h1

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                                                  Circular No. 5464
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 1992I IN NGC 2565
     C. Pollas, Observatoire de la Cote d'Azur, reports the discovery
by Christian Buil, on CCD frames obtained Feb. 29.93 UT with a
0.50-m reflector at Toulouse, of an apparent supernova (mag about
18) in NGC 2565 = Markarian 386.  A Tech Pan exposure taken by
Pollas on Mar. 1.0 UT has a limiting magnitude similar to that of
the Palomar Sky Survey prints, which show no object at the position
of SN 1992I, measured by Pollas as R.A. = 8h16m50s.21, Decl. =
+22 11'28".5 (equinox 1950.0), or 28".5 west and 7".1 north of the
galaxy's center.  A bright star near the galaxy's nucleus has end
figures 52s.68, 10".5.


COMET MUELLER (1991h1)
     Ephemeris from orbital elements on MPC 19654:

1992 TT    R. A. (2000) Decl.     Delta     r    Elong. Phase    m1
Feb. 28    1 43.61    + 0 38.8    0.785   0.722   46.2   82.1    8.1
Mar.  4    1 27.87    - 3 51.6    0.848   0.597   36.8   84.7    7.4
      9    1 10.01    - 7 47.5    0.913   0.465   27.9   85.7    6.5
     14    0 46.72    -10 53.5    0.979   0.329   19.2   83.1    5.1
     19    0 12.94    -11 32.1    1.043   0.216   11.9   71.5    3.4
     24   23 36.32    - 5 23.3    1.081   0.225   11.6   62.5    3.7
     29   23 18.57    + 4 54.3    1.092   0.345   18.3   65.4    5.6
Apr.  3   23 12.79    +15 04.1    1.106   0.481   25.8   64.7    7.0
      8   23 12.37    +24 27.6    1.132   0.612   32.6   61.9    8.1
     13   23 14.82    +33 02.2    1.170   0.737   38.7   58.3    9.0
     18   23 19.09    +40 49.1    1.219   0.855   43.9   54.5    9.7
     23   23 24.72    +47 50.9    1.278   0.968   48.3   50.9   10.4
     28   23 31.51    +54 11.2    1.345   1.076   52.0   47.6   11.0

     Total visual magnitude estimates (cf. IAUC 5438):  Jan. 29.26
UT, 11.0 (A. Hale, Las Cruces, NM, 0.41-m reflector); Feb. 3.07,
10.6 (J. E. Bortle, Stormville, NY, 0.32-m reflector); 6.03, 9.9
(Bortle); 21.96, 8.5 (V. F. de Assis Neto, Sao Francisco de Oliveira,
Brazil, 10x70 binoculars); 24.79, 8.3 (H. Mikuz, Ljubljana, Slovenia,
20x60 binoculars); 29.77, 7.9 (Mikuz); Mar. 1.05, 7.9 (G. W. Kronk,
Troy, IL, 0.33-m reflector).


1992 March 2                   (5464)             Daniel W. E. Green

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