COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1116

                                  Konkoly Observatory
                                  Budapest
                                  1976 March 22


        PHOTOMETRY OF ECLIPSING BINARY 1073 Cyg




   The star 1073 Cyg (BV 342) was first reported as a variable,
by W. Strohmeier in 1960. In this binary interaction effects make
the light curve difficult to solve. Two independent sets of 
photoelectric observations were obtained by Y. Kondo (1966, A.J. 71,
54) and by O. Bindinelli, S. Catalano, S. Cristaldi and C. delli
Ponti (1967, Publ. Catania, N.S., 113). The solutions adopted by
the authors mentioned above are similar.
   During September and October 1975, photoelectric observations
of 1073 Cyg were made with the 50 cm Cassegrain reflector of the
Astrophysical Section of the Bucharest Observatory. The telescope
is equipped with an uncooled EMI 6502 B photomultiplier tube. 614
individual points in integral light were obtained. As comparison
star, BD 32d4160 was used.

                       [FIGURE 1]

         Observed light curve (normal points)


   The list below contains minima of 1073 Cyg with the timings
reduced by the tracing paper method; the elements given in GCVS 3
(2nd suppl.) were used for O-C computations.


    Min.Hel.      E          O-C       Observer

2442660.4276   5074.5     +0.0010   Al.Dumitrescu
    662.3880   5077       -0.0033   Al.Dumitrescu
    671.4289   5088.5     +0.0002    R.Dinescu





                AL. DUMITRESCU, R. DINESCU
                Bucharest Observatory
                Astrophysical Section