COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2842

                                     Konkoly Observatory
                                     Budapest
                                     28 December 1985

                                     HU ISSN 0374 - 0676



               MINIMA TIMES OF GO CYGNI




    The short period eclipsing binary GO Cygni was photoelectrically 
observed during July and September 1985. The observations 
were made using a two-beam, multi-mode, nebular-stellar
photometer attached to the 48-inch Cassegrain reflector at the
Kryonerion Astronomical Station of the National Observatory of
Athens.

    Reduction of the observations was made using Hardie's (1962)
method, while the B and V filters used are in close accordance
to the standard ones. Our observations and light curves of GO
Cyg will be appeared and analysed elsewhere. Here, we shall
give only the five new minima times which were derived from our
observations. They are presented in the following Table, the 
successive columns of which give : the heliocentric Julian date,
the residuals (O-C)K and (O-C)S - where the C's were found
using Kukarkin's et al. (1976) and Sezer's et al. (1985) ephemeris
formulae, respectively and the type of minimum.

   The minima times have been calculated using the Kwee and
Van Woerden method (1956) and are the mean values of B and V
observations. Moreover, it must be pointed out that the minima
times for secondary minima were found as usually, although it
seems from our observations that there is a very small 
eccentricity.


                Table I


Hel. J. D.      (O-C)K      (O-C)S       Min
2440000.+        days        days       Type

6264.4795       +0.0428    -0.0046        I
6325.4892       +0.0426    -0.0037        I
6327.2790       +0.0370    -0.0117        II
6328.3597       +0.0421    -0.0057        I
6329.4275       +0.0338    -0.0155        II




H. ROVITHIS - LIVANIOU
Section of Astrophysics-
Astronomy and Mechanics
Dept. of Physics,
Athens University
Panepistimiopolis, GR 15771
ZOGRAFOS,  GREECE

P. ROVITHIS
Astronomical Institute,
National Observatory of Athens
Athens 118 51,
GREECE

References :

  Hardie, R. H. . 1962, in W.A. Hiltner (ed.), Stars and Stellar
  Systems Vol. II, Astronomical Techniques, The
  University of Chicago Press, Chicago.

  Kukarkin, B. V. et al. . 1976, Third Supplement to the Third
  Edition of the General Catalogue of Variable
  Stars, Moscow. [BIBCODE 1976tstt.book.....K ]

  Kwee, K.K. Van Woerden, H. . 1956, Bull. Astron. Inst. Neth.
  12, 327. [BIBCODE 1956BAN....12..327K ]

  Sezer, C., Gulmen, O. and Gudur, N. . 1985, I.B.V.S. No. 2743.