Constraints on the mass of the secondary star in LP 427−016 as a function of the apparent separation of the two components. The red dotted and blue dashed lines depict the contrast curves of the RoboAO and FastCam observations, respectively. The green line indicates the minimum mass limit computed from RVs, of 0.011 M_⊙. The black dashed line is the apparent separation for the lower limits to the period, assuming a circular orbit and i = 90 deg. The shaded regions indicate solutions that are not consistent with the observations.