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The light-curve synthesis approach of Wilson & Devinney has been used to solve simultaneously light and radial velocity curves of the Algol-type eclipsing binary star U Cephei. We have performed eight new differential corrections solutions using the photometric data of Markworth and the radial velocity data of Batten to obtain a consistent set of orbital and astrophysical parameters for the light and velocity curves of this famous system. We find U Cephei to be best modeled using the semidetached (mode 5) system geometry of the Wilson & Devinney program, with a primary rotating at about 5.2 times its synchronous rate, and have found absolute system parameters to be = 4.93 M0, M2 = 3.27 M0, Ri = 2.77 R0, and R2 = 5.22 RQ.



Rafert, J. B., & Markworth, N. L. (1991). Simultaneous light and radial velocity curve solutions for U Cephei. The Astrophysical Journal, 377(1), 278-284.



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