Model isochrones from the Yonsei‐Yale series by Yi et al. (2001) and Demarque et al. (2004), corresponding to ages of 1–9 Gyr (left to right), for the measured composition of ﹩[ \mathrm{Fe}\,/ \mathrm{H}\,] =-0.15﹩, shown with the observational constraints. Top: The measurement on the vertical axis is the spectroscopically determined value of ﹩\mathrm{log}\,g﹩, which provides only a weak handle on the stellar radius and no useful constraint on age. Bottom: The use of the photometrically determined value of ﹩a/ R_{\star }﹩ from the light‐curve analysis of Holman et al. (2007b) instead of surface gravity provides a much stronger constraint on the age and radius (by about a factor of 5).