ИСТИНА

The results of photometric observations of cataclysmic variable ASAS-SN-13cx are presented. CCD observations were taken in August–September 2014 (outburst) and in October-November 2016 (quiescence) using the 50-cm and 60-cm telescopes, more than 1800 images in V and Rc filters. Detailed light curves for the system’s active and quiescent states are plotted. A “spiral” model is applied to solve for the parameters of ASAS-SN-13cx during the outburst which takes into account the geometric disturbances on the accretion disk surface. We searched for the parameters in quiescence with a “complex” CV-s model taking into account an accretion disk with hot spot on the lateral surface geometrically thick outer edge of the disk. The basic parameters of ASAS-SN-13cx are found for the first time including q = M1 /M2 = 7.0±0.2, i = 79.9 - 80.1 o, a0 = 0.821(1)R, radiuses R1 = 0.0102(4)Ro, R2 = 0.194(3)Ro and temperatures of the components T1 =12500±280 K, T2 = 2550±400 K. These parameters correspond to M4–9V spectrum of the secondary. The mass of the accretion disk approximately doubles during quiescence on a time scale of about 400 orbital periods. The classification of ASAS-NS-13cx as a SU UMa dwarf nova is confirmed.