COMMISSION 27 OF THE I.A.U.
          INFORMATION BULLETIN ON VARIABLE STARS
                        NUMBER 94


                                        Konkoly Observatory
                                        Budapest
                                        5 May 1965


              UBV PHOTOMETRY OF RR LYRAE STARS

   Photoelectric photometry of RR Lyrae stars on the UBV System
begun at the Royal Greenwich Observatory and continued at the
Kottamia station, Helwan Observatory, United Arab Republic, gives
the following results:

                 Max                 Min                             Rising
           V     B-V   U-B     V     B-V   U-B    <V>   <B-V> <U-B>  Branch

SS Psc   10.78   .26   .22   11.19   .35   .26   10.98   .30   .23   44% c
AH Cam   11.31   .62   .52   12.33   .95   .58   11.88   .85   .55   21% a
UY Cam   11.33   .15   .13   11.66   .24   .21   11.49   .20   .17   46% c
TT Lyn    9.46   .20   --    10.17   .47   --     9.87   .39    --   20% a
RY Com   11.66   .06   --    12.84   .44   --    12.36   .31    --   24% a
AV Peg    9.91   .18   --    10.86   .55   --    10.48   .42   .13:  20% a

   I am grateful to Prof. A. H. Samaha for the opportunity to use
the 74 in. reflector at Kottamia.


                                       D. H. P. JONES
                                Royal Greenwich Observatory