Left: inferred mass for the candidate companion MEAD 62 B. Corner plot of the inferred age (in Gyr), mass (in solar mass), and error scaling factor, log_f, obtained from an MCMC run using the measured F1000W and F1500W magnitudes, the MEAD 62 distance, the prior age distribution obtained by modeling the white dwarf SED, as well as using the ATMO2020 (strong nonequilibrium) evolutionary models. Right: plots of the F1000-F1500W, absolute F1000W and F1500W magnitudes vs. age, filled with lines of iso-masses predicted by the same ATMO2020 models overplotted with the MCMC inferred mass for MEAD 62 B.