COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1123

                                Konkoly Observatory
                                Budapest
                                1976 April 6


   THE ECLIPSING/SPECTROSCOPIC BINARY HD 193964 = 71 Dra



   The star 71 Dra was found to be a photometric variable by W. Fuertig
(IBVS No. 1071). The star was already known as a spectroscopic binary
for which this writer had published a solution (J.R.A.S.C. 67, 161,
1973) and in which it was remarked that there was an unusually large
scatter in the radial velocities near the predicted time of conjunction.
Fuertig and his collaborators have made additional photometric 
observations confirming that the star is eclipsing and has a period of
approximately 5.2984d (private communication). D.W. Willmarth, Toledo,
Ohio, having apparently overlooked the earlier orbital solution, has
independently observed the star spectroscopically and solved for the
orbital parameters (P.A.S.P. 88, 86, 1976).
   The two spectroscopic solutions differ substantially in the systemic
velocity and semi-amplitude. Using all 52 published radial velocities
which now extend over 56 years, the writer has obtained another 
solution which gives a period of 5.298095d +- 0.000025.
   The system requires further spectroscopic observations since, clearly,
the definitive spectroscopic orbital solution has not been published.
It would also be of interest to clarify the nature of the radial velocity
variations near conjunction.


                  DOUGLAS P. HUBE
                  Department of Physics
                  University of Alberta
                  Edmonton, Alberta
                  Canada