W UMa-type Light-Curve Analysis V700 Cyg Binary Star

V700 Cyg is a W Ursae Majoris (W UMa)-type contact binary star located in the constellation Cygnus. Photometric observations were conducted using a 0.7-meter reflecting telescope equipped with a CCD photometric system and B and V filters at the Regional Observatory for the Public, Songkhla, operated by the National Astronomical Research Institute of Thailand (Public Organization), during the night of August 6–7, 2021. The observational data were analyzed using the Wilson-Devinney method to generate a synthetic light curve that best represents the physical properties of the system. The results indicate that the effective temperatures of the primary and secondary components are 7692 K and 6078 K, respectively, with a mass ratio (q) of 2.98 and a degree of contact of 3.48%.