COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      NUMBER 677

                                      Konkoly Observatory
                                      Budapest
                                      1972 May 17


            A NEW SHORT PERIOD ECLIPSING BINARY


In 1970 Marcia Keyes at the Maria Mitchell Observatory discovered an eclipsing
variable at 18h06m47s -21deg56.0' (1900). The following summer step
estimates of the changes in brightness were carried out by Judith Karpen who
also ascertained the period and computed most of the phases:

Primary minimum = JD 2440058.752+0.9541102d E

In all 708 plates were available of the Harvard MF and B series and the
Nantucket NA. Each point in the accompanying mean light curve represents from
8 to 24 individual observations spanning the years 1924 through 1971. The
photographic magnitudes for the comparison stars A, C and D marked on the
finder chart have been adopted as 12.0, 12.5 and 13.0 respectively. The range
of the variable from the mean light curve is from 12.00 to 12.65 mag.

      [FIGURE 1]

                             [FIGURE 2]

Numerous spurious periods were tested, none of which satisfied all of the
observations.

We are grateful to the National Science Foundation for the support of this
investigation.


9 May 1972

                                    DORRIT HOFFLEIT
                                    Maria Mitchell Observatory
                                    Nantucket, Massachusetts, U.S.A.