Comparison of theoretical mass-radius relations of brown dwarfs by Baraffe et al. (2003) for an age of 1 Gyr (filled triangles), 5 Gyr (triangles) and 10 Gyr (diamond) to results from the light cure analysis. Each error cross represents a solution from the light curve analysis for a different mass ratio (q = 0.10, 0.11, 0.12, 0.13, 0.14, 0.145, 0.146, 0.15, 0.16, 0.17, 0.18, 0.19). The dashed vertical lines mark different values of the corresponding sdB masses. The solid line marks the most probable solution with q = 0.146, which results in an sdB mass of 0.47 M_⊙.