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IAUC 3716: 1982g; TT Ari; RS Oph

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IAUC number 

                                                  Circular No. 3716
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 AUSTIN (1982g)
     The following precise positions have been measured by P. M.
Kilmartin from exposures by A. C. Gilmore at Mt. John Observatory:

     1982 UT             R. A. (1950) Decl.
     July  2.70985     4 24 50.27   -36 52 00.3
           2.71731     4 24 50.97   -36 51 53.6
           6.77205     4 31 51.09   -35 44 03.8
           6.78490     4 31 52.55   -35 43 49.8
          15.64606     4 50 54.31   -32 26 51.4
          15.66396     4 50 57.18   -32 26 21.3

     Improved parabolic orbital elements determined by the undersigned
from 17 observations June 19-July 15:

       T = 1982 Aug. 24.7259 ET  Peri. =  33.8178
                                 Node  = 325.5726   1950.0
       q = 0.647757 AU           Incl. =  84.4954

     These elements yield the following corrections to the ephemeris
on IAUC 3708-3709:

       1982 ET    dR.A.  dDecl.      1982 ET     dR.A.  dDecl.
       July 25   -0.36   - 5.3       Aug. 14    -2.47   -29.4
            30   -0.67   -11.1            19    -2.09   -14.1
       Aug.  4   -1.21   -22.4            24    -1.36   - 6.0
             9   -1.98   -35.3            29    -0.80   - 3.1


TT ARIETIS
     J. Mattei, AAVSO, informs us that this object (cf. IAUC 3683)
is again at minimum: according to J. Bortle, Stormville, NY, it
was fainter than mv 14.7 on July 21.34 UT.


RS OPHIUCHI
     Several observers have reported that this recurrent nova is
unusually bright (the brightest since 1976).  Selected visual magnitude
estimates: June 22.16 UT, 11.7 (M. Heifner, Denver, CO; communicated
by Mattei); 26.16, 11.4 (Heifner); 29.16, 10.7 (Heifner);
July 4.9, 10.5 (M. Verdenet, Bourbon-Lancy, France); 8.9, 10.0
(Verdenet); 15.03, 10.3 (G. M. Hurst, Wellingborough, England);
19.98, 10.3 (Hurst); 20.14, 10.1 (Heifner); 21.14, 10.2 (Heifner).


1982 July 22                   (3716)              Brian G. Marsden

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