The candidate protoplanetary object IRAS 22223+4327 is a pulsating variable star

We present our photoelectric UBV observations of the candidate protoplanetary object IRAS 22223+4327 during four visibility seasons. The star exhibited periodic brightness variations with the maximum amplitudes DeltaU = 0.(m)23, DeltaB = 0.(m)18, and DeltaV = 0.(m)12 and a time scale of about 90 days, which is equal to the period derived by other authors from radial velocities. During these brightness variations, a correlation is observed between the (B - V) color index and brightness, which is characteristic of pulsations. We estimated the star's spectral type from our photometric data to be F8 I. We detected a "deficit" of light in the U band. The star's mean brightness and its spectral type appear to have not changed in the past half a century. (C) 2003 MAIK "Nauka/Interperiodica".