COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      NUMBER 125




                                        Konkoly Observatory
                                        Budapest
                                        16 March 1966


                     RZ VULPECULAE


      The star probably belongs to the group of the so called novalike 
variables or to the U Gem stars. The light-outbursts take place in
intervals of about 1 500 days, the limits of brightness being 12.5mag and
15.5mag photographically. Superposed on these long term variations are
secondary changes with durations less than 100day and with amplitudes
1.0mag or more. Night runs of plates show some evidence of still shorter
variations (order of magnitude: hours), but these need confirmation by
more observations.
      Spectral type according to Herbig (ApJ 131, p. 632) G2,
luminosity class IV or V.

      For further details see forthcoming paper in MVS.

German Academy of Sciences
  Sonneberg Observatory

                                     L. MEINUNGER