COMMISSION 27 OF THE I. A. U.
                  INFORMATION BULLETIN ON VARIABLE STARS
                               Number 2498

                                                      Konkoly Observatory
                                                      Budapest
                                                      28 March 1984

                                                      HU ISSN 0374-0676



                            SIX NEW VARIABLE STARS


  During the period January 1983 to February 1984, photoelectric photometry
of selected photographic and visual zenith tube stars was carried out
(Guetter and Hewitt 1984). The data were obtained with a single beam photometer
attached to the 1-meter reflector at the U.S. Naval Observatory,
Flagstaff Station. The photometer employed a cooled EMI 9658R photomultiplier 
and a combination of filters designed to match the standard UBV system.
  The average standard deviation for a single V observation for the program
stars was found to be +-0.009m. The criterion was adopted that stars with
dispersions in visual magnitude greater than or equal to +-0.025m were variables.
Seventeen such objects were found, of which eleven are known or suspected 
variables. The other six stars were not previously known to be varying. 
Their mean colours indicate that they are K-M giants and it is therefore

    HD 10388 = BD+38d326       01h 39.2m +39d 10' (1950)

            244 5633.836       7.73   1.65    2.00
            244 5653.783       7.64   1.66    1.98
            244 5658.699       7.65   1.67    1.99
            244 5673.696       7.66   1.67    2.00
            244 5674.637       7.67   1.63    1.98
            244 5684.669       7.72   1.66    2.01

    HD 83787 = BD+31d2026      09h 38.6m +31d30' (1950)

            244 5402.793       5.98   1.50   1.77
            244 5442.682       5.90   1.57   1.76
            244 5463.705       5.88   1.57   1.76
            244 5464.693       5.89   1.58   1.78
            244 5465.680       5.84   1.56   1.77
            244 5466.656       5.88   1.57   1.76

    HD 84914 = BD+37d2022      09h 46.5m +36d59' (1950)

            244 5402.808       6.63   1.58   1.95
            244 5403.785       6.64   1.58   1.96
            244 5465.693       6.56   1.56   1.94
            244 5473.664       6.59   1.57   1.92
            244 5484.666       6.65   1.58   1.92
            244 5485.659       6.61   1.56   1.91



    HD 110678 = BD+61d1312     12h 40.9m +61d26' (1950)

            244 5464.752       6.40   1.27   1.41
            244 5465.761       6.37   1.26   1.40
            244 5484.708       6.44   1.27   1.40
            244 5485.683       6.38   1.28   1.37
            244 5506.663       6.39   1.26   1.39
            244 5513.667       6.39   1.26   1.39

    HD 121297 = BD+53d1667     13h 51.5m +52d34' (1950)

            244 5402.975       6.78   1.53   1.52
            244 5463.807       6.69   1.54   1.58
            244 5464.801       6.70   1.55   1.57
            244 5484.746       6.87   1.52   1.48
            244 5485.706       6.86   1.51   1.48
            244 5506.671       6.77   1.53   1.53

    HD 184827 = BD+33d3507      19h 33.1m +33d 41' (1950)

            244 5633.611       6.73   1.60   1.84
            244 5634.601       6.71   1.59   1.84
            244 5653.593       6.69   1.61   1.84
            244 5655.568       6.66   1.61   1.85
            244 5658.570       6.66   1.60   1.86
            244 5674.556       6.66   1.61   1.83


concluded that they are irregular variables, In the table the
individual measures are presented. Tabulated are the HD and BD numbers, the
1950 coordinates, the heliocentric Julian date of the observation, and the
V, (B-V), and (U-B) magnitude and colours, respectively.





              H.H. GUETTER and A.V. HEWITT
              U.S. Naval Observatory
              Flagstaff Station,
              P.O. Box 1149,
              Flagstaff, AZ 86002,
              U.S.A.





Reference:

Guetter, H.H., and Hewitt, A.V. 1984, Publ. A.S.P. (submitted) [BIBCODE 1984PASP...96..441G ]