COMMISSION 27 OF THE I. A. U.
          INFORMATION BULLETIN ON VARIABLE STARS
                      Number 1390

                                   Konkoly Observatory
                                   Budapest
                                   1978 March 1



   COORDINATED CAMPAIGN FOR OBSERVATIONS OF RX CASSIOPEIAE
                     ANNOUNCEMENT



   The undersigned kindly requests to inform him on the observations 
(photometric, spectrophotometric, spectrographic) and
on the analysis of observations or about other theoretical 
investigations conducted by the participants of the coordinated
two year campaign for the study of RX Cas, adopted by the
Commission 42 at the Grenoble meeting of the IAU.





                        D.YA. MARTYNOV
                        (The Coordinator)
                     Sternberg Astronomical Institute
                       Moscow 117234, USSR