A PHOTOMETRIC STUDY OF AO CAMELOPARDALIS

The results of B, V photometry of AO Cam are presented. Two equally good light-curve solutions, one with an occultation primary minimum and another with a transit primary, were calculated with the Wilson-Devinney code. In both cases the star barely fills its Roche lobe, and the mass ratio is large for this type of system. A revised ephemeris was derived from all available observations, and the period is found to have been roughly constant over the past four years.