The first BVR light curves and period analysis of the eclipsing binary V821 Cas The first BVR light curves of the eclipsing binary V821 Cas are used toderive the physical parameters of the system. The light curves wereobtained during 2000 and 2001 observational seasons at Ege UniversityObservatory (EUO). Period variation of the system was also investigated.For the first time apsidal motion elements of the system were obtainedfrom the O–C curve analyses. Preliminary absolute parameters ofthe components were computed taking into account the results of lightcurves analysis. Observational and theoretical internal structureconstants were estimated to belogk=-2.66andlogk=-2.42, respectively.
