A photometric study of the W UMa-type eclipsing binary system 1SWASP J160156.04 + 202821.6

•We present the first B, V, R, and I light curves of the system J1601.•The photometric mass ratio is estimated to be around 0.7.•The analysis suggests the system J1601 to be in an overcontact configuration.

B, V, R and I light curves of the eclipsing binary system 1SWASP J160156.04 + 202821.6 (J1601) have been constructed, for the first time, based on the CCD observations obtained using the 1.88 m telescope of Kottamia Astronomical Observatory (KAO), Egypt, during June, 2013. Twenty new times of minima (8 primary and 12 secondary) have been derived from the presented photometry, and a new ephemeris has been determined. The analysis of the corresponding light curves is made using Djurašević’s inverse problem method. The light-curve asymmetry is explained using a Roche model with spots on system components. The analysis showed that the system is in an overcontact configuration (fover∼13%)(fover∼13%) with a small temperature difference between the components (ΔT=Th-Tc∼120K), indicating a good thermal contact. The analysis suggests that J1601 is an A-subtype of W UMa-type eclipsing systems, where the primary component is the hotter and more massive one.