COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                     NUMBER 390

                               Konkoly Observatory
                               Budapest
                               1969 October 


                MINIMA OF R CMa

      The eclipsing binary R CMa was observed 
photoelectrically in yellow and blue light with a 1P21 
photomultiplier attached to the 15-inch refractor of the Nizamia
Observatory, Hyderabad, India, during 1967. BD -15deg 1734 and
BD -15deg 1732 were used as primary and secondary comparison
stars respectively. There was no significant difference
between the times of minimum light at the two wavelengths.
The heliocentric times of minimum light given below are
averages from the two wavelengths and were obtained by
Hertzsprung's method.

      Minimum (Primary)     O-C

      J.D.2439533.179      -0.196d
          2439802.403      -0.192d

The residuals were computed using E. F. Guinan's unpublished
ephemeris:

      Min = 2420213.1393 + 1.13594988d  E .

October 1, 1969.
                        CHARYULU,G.K.
                   Flower and Cook Observatory
                   University of Pennsylvania
                   Philadelphia, Pennsylvania.
                             U.S.A.




   CATALOGUE OF PHOTOMETRIC SOLUTION OF ECLIPSING STARS

      A. H. Koch, M. Plavec, and F. B. Wood are presently
compiling a critical Catalogue of Photometric Solutions of
Eclipsing Stars from analyses already in the literature.
This task should be completed by April 30, 1970. Authors
who have unpublished manuscripts (already accepted for
publication) which may not appear before that date are 
invited to send a copy of each manuscript to:

                         Dr. R. H. KOCH
                     Department of Astronomy
                    University of Pennsylvania
                     Philadelphia, Pa. 19104