Abstract
The light-curve synthesis approach of Wilson and Devinney (1971) has been used to solve simultaneously light and radial velocity curves of the Algol-type eclipsing binary star U Cephei. Eight new differential corrections solutions have been performed to obtain a consistent set of orbital and astrophysical parameters for the light and velocity curves of this famous system. U Cephei is found to be best modeled using the semidetached (mode 5) system geometry of the Wilson and Devinney program, with a primary rotating at about 5.2 times its synchronous rate, and absolute system parameters are found to be M1 = 4.93 solar masses, M2 = 3.27 solar masses, R1 = 2.77 solar radii and R2 = 5.22 solar radii. 46 refs.
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