COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                     NUMBER 334


                                 Konkoly Observatory
                                 Budapest
                                 1969 March 6


                  AD LEO


     A continual photoelectric monitoring of the flare
star AD Leo was done with the 30-cm reflector of the Okayama
Station from 10 to 24 February 1969. During 19 hours of
monitoring in total, only one flare-like activity was 
observed as shown in the following table.


                  Table 1.
        Flares of AD Leo observed at Okayama,
            10 to 24 February, 1969

			F l a r e s
                                                   
Date   Time of         Time of      max.  Duration  Integrated
      Monitoring         max.       m(B)            intensity
Feb.                                              
10d   12h14m-13h18m
      13 50 -16 01
      16 23 -17 49     16h36.2m   0,13^mag   4^min      0.2^min
11    16 41 -20 26
12    12 31 -14 00
      14 18 -15 03
      15 47 -17 35
      17 56 -18 40
14    13 25 -14 00
      16 26 -16 45
16    16 29 -17 02
24    12 45 -13 32
      13 50 -14 29
      16 10 -18 57


Tokyo Astronomical Observatory
February 26, 1969

                          K. ICHIMURA
                          T. NOGUCHI
                          F. WATANABE