Relative photometry of WASP-10

We employed the novel point-spread function shaping capabilities of the Orthogonal Parallel Transfer Imaging Camera mounted on the UH 2.2m telescope to achieve a photometric precision of 4.7x10^-4^ per 1.3 minute sample. With this new light curve, in conjunction with stellar evolutionary models, we improve on existing measurements of the planetary, stellar, and orbital parameters.

We find a stellar radius R_*_=0.698+/-0.012R_{sun}_ and a planetary radius R_P_=1.080+/-0.020R_Jup_. The quoted errors do not include any possible systematic errors in the stellar evolutionary models. Our measurement improves the precision of the planet's radius by a factor of 4, and revises the previous estimate downward by 16% (2.5{sigma}, where {sigma} is the quadrature sum of the respective confidence limits).