COMMISSION 27 OF THE I.A.U.
              INFORMATION BULLETIN ON VARIABLE STARS
                           Number 1252

                                                    Konkoly Observatory
                                                    Budapest
                                                    1977 March 18


           A NEW ECLIPSING BINARY IN CYGNUS

In the summer of 1970 Martha Clark, a student then working
at the Maria Mitchell Observatory, discovered a new variable
star at 19h41m04s +45d13.0' (1900). I have now examined this
star on more than 1000 plates taken at Nantucket between 1926
and 1976. It is of the Algol type varying from about 14.0 to
15.3 pg. The best constant period I was able to derive to represent 
the times of observed minima is 1.811443d. However, as the
upper part of the Figure indicates, the scattering of the observations 
at and near minimum is not satisfactory. These phases were
computed with the reciprocal period on the basis of the relation,
Phi =  0.552046 (JD - 2400000) - E. Somewhat better results (lower
plot) are obtained by adding a cyclical correction term to the
phases, namely DeltaPhi = 0.015 sin 0.045deg (JD - 2439000). The
corresponding ephemeris then becomes,

 Min = 2442653.610+1.811443E-0.027 sin 0.045deg (JD - 2439000).

   The finder chart represents an area of approximately
15'x15'. Star A is BD +44d3222 and B is +45d2965.


                                  DORRIT HOFFLEIT

                             Maria Mitchell Observatory
                             Nantucket, Mass., U.S.A.



                        [FIGURE 1]