41th Annual European Association of Urology Congress - 2026, Londrina, Brazil, 13 - 16 March 2026, vol.89, pp.1-2, (Full Text)
UBV observations of the X-ray binary system A0535+26/V725 Tau at the Crimean Station of the Sternberg Astronomical Institute in 1980-1998 are presented. Based on our and published data, we analyze the photometric history of the star from 1898.