The new AM Her system RX J0704.2+6203 - Northern twin of BL Hydri

We report here on the identification and study of the optical counterpart o f the ROSAT source RX J0704.2+6203. Extensive spectral and photometric obse rvation showed that the object belongs to the class of magnetic Cataclysmic Variables. We determined the orbital period of the system to be 97.(m)27 a nd estimated the strength of its magnetic field to be on the order of 20 MG . The system was observed in both high and low states, common for its class . Other parameters of the magnetic close binary system were estimated. The spectral and photometric behavior of the object is similar to that of the w ell studied polar BL Hyi.