COMMISSION 27 OF THE I. A. U.
      INFORMATION BULLETIN ON VARIABLE STARS
                   NUMBER 732

                                 Konkoly Observatory
                                 Budapest
                                 1972 October 30


      THE PHOTOMETRIC ACTIVITY OF RU Cam
          DURING THE YEARS 1970-72




    We give here the preliminary results of the systematic 
monitoring of the variable RU Cam performed at the
Merate Observatory during the intervals September 1970-
March 1971 and November '71 - July '72.
    The Figure displays the increase of the amplitude of
the V light curve with a first maximum in January '71,
followed by a strong decrease and a second maximum in December 
'71 after which the decrease of the light fluctuation
appears slower.
    The variability looks like that of the previous years
with a total amplitude of 0.2m at the most. (Astron. and Astrophys. 
18, 201, 1972). The period of the light variation seems
constant along the interval 1971-72.

                     [FIGURE 1]



Merate Observatory          P. BROGLIA and G. GUERRERO
October 20, 1972