OBSERVATIONS OF AB-DORADUS IN 1986

The results of photometric and spectroscopic observations of AB Dor in November 1986 confirm presence of a rapid (on a scale of a few rotati onal periods) variability of light curve of the variable. Minima of li ght curves in different colors are shifted in phase relative to each o ther. All photometric observations available in literature can be phas ed with a single period without necessity of invoking any systematic s pot migration. The value of the surface flux of the line core emission in H and K lines places AB Dor among the most chromospherically activ e stars known at present.