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IAUC 3839: 1983k; Prob. SN IN NGC 4220; U Aqr; 1983 LB

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IAUC number 

                                                  Circular No. 3839
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 617-864-5758


COMET IRAS (1983k)
     J. Davies, University of Leicester, reports that the Infrared
Astronomical Satellite has yielded another unusual object, which
K. S. Russell, U.K. Schmidt Telescope Unit, has confirmed (on a
plate taken by J. Dawe) to be yet another comet.  Positions are:

    1983 UT          R.A.  (1950.0)  Decl.      m1     Observer

    July 11.47984   11 57.75      -48 59.3      17     IRAS
         11.55139   11 57.78      -48 56.8               "

         14.35223   11 59 05.8    -47 18 41     18     Dawe


PROBABLE SUPERNOVA IN NGC 4220
     R. W. Argyle, Royal Greenwich Observatory, telexes that an
exposure on July 6.924 UT showed Wild's probable supernova in NGC
4220 (cf. IAUC 3835) at mpg = 15.2 and yielded the following precise
position: R.A. = 12h13m44s39, Decl. = +48deg09'25" 2 (equinox
1950.0).


U AQUARII
     J. Mattei, AAVSO, reports that this R-CrB-type star has
started to fade.  Recent visual magnitude estimates are: May 14.4
UT, 11.6 (J. Bortle, Stormville, NY); July 7.2, 12.4 (Bortle);
14.3, 12.6 (C. Scovil, Stamford, CT); 14.3, 12.8 (Bortle).  The
last minimum lasted from 1976 (cf. IAUC 2995) to 1979.


1983 LB
     Continuation to the ephemeris on IAUC 3829:

     1983 ET     R.A. (1950.0) Decl.      p        r      Mag.

     July 10    15 18.23    -54 37.7
          15    15 04.11    -59 57.3    0.323    1.211    17.5
          20    14 51.29    -64 30.5
          25    14 40.34    -68 25.1    0.369    1.198    17.9
          30    14 31.9     -71 49.4
     Aug.  4    14 27.0     -74 50.5    0.418    1.195    18.3
           9    14 27.0     -77 34.7
          14    14 34.7     -80 06.1    0.468    1.202    18.5
          19    14 55.7     -82 26.0
          24    15 43.0     -84 28.8    0.516    1.219    18.7


1983 July 18                   (3839)              Brian G. Marsden

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