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IAUC 4197: 1986c; 1986D

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IAUC number 

                                                  Circular No. 4197
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


COMET HARTLEY (1986c)

     Malcolm Hartley, U.K. Schmidt Telescope Unit, Siding Spring,
reports his discovery of a comet of magnitude ~ 17-18 with a faint
tail evident:

           1986 UT             R.A.   (1950.0)   Decl.

           Mar. 15.59361     11 22 52.78     - 7 27 45.7
                17.67951     11 20 54.53     - 7 11 14.2
                20.60691     11 18 13.08     - 6 47 55.4

     The following parabolic orbital elements are very uncertain.
A low-inclination, short-period orbit gives similar residuals.

         T = 1985 June 20.07 ET  Peri. = 185.39
                                 Node  = 179.23   1950.0
         q =   0.0759 AU         Incl. =  59.76

     1986 ET     R.A. (1950.0) Decl.      p        r       m1

     Mar. 11    11 27.33    - 8 04.2    3.476    4.452    17.2
          21    11 17.86    - 6 44.8
          31    11 09.42    - 5 27.2    3.733    4.678    17.6
     Apr. 10    11 02.34    - 4 15.0
          20    10 56.79    - 3 11.1    4.118    4.898    18.0
          30    10 52.84    - 2 17.0
     May  10    10 50.41    - 1 33.4    4.594    5.114    18.4
          20    10 49.40    - 1 00.2
          30    10 49.65    - 0 36.8    5.120    5.325    18.8


SUPERNOVA 1986D IN M82
     M. J. Lebofsky, G. H. Rieke, and W. F. Kailey, Steward
Observatory, communicate their discovery on Mar. 21.1 UT of a supernova
in M82, located at R.A. = 9h51m42s0, Decl. = +69deg54'59" (equinox 1950.0).
The object was only observed at 2 microns (magnitude 10), and it appears
to be heavily obscured, located ~ 9" west and 2" south of the 2-micron
nucleus of the galaxy; the supernova was not visible on a TV monitor,
indicating an upper limit of V ~ 16.  The object was also
observed Mar. 22 and 23.  Previous observations by Rieke et al.
(1980, Ap.J. 238' 24) in 1978 and by J. L. Pipher and W. J.
Forrest, University of Rochester, in 1983 Mar. show no 2-micron object
at this location.


1986 March 24                  (4197)            Daniel W. E. Green

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