Photoelectric Obsrvations of RS Canum Venaticorum

A total of 618 photoelectric observations (302 in yellow and 316 in blue) is made in 1982 at the Yonsei University Observatory. Except that of the secondary eclipse the homogeneous coverage of observations successfully secured B, V, and B-V light curves. Enhanced distortions in the light curves are appeared at the phases around 0.P1, which supports the wave-like migration period of 9.7 years (Rodono 1981). One epoch time of the primary minimum was made by combining the observations in three nights. This minimum time shows that the O-C values are still decreasing and there seems no indication of increasing. B and V light curves of the primary minimum are in strong asymmetry which show less luminous in the third and fourth contacts compared to those of the first and second ones. This asymmetry may be as a result of the reflection of the wave minimum at 0.P1, and B-V curve also shows asymmetry, redder at the third contact than the second one by about 0.m04. This color difference apperature distribution on the surface of cooler, larger component (KO IV star)