Joint posteriors for the mass and initial entropy of κ And b obtained through MCMC runs with the models of Marleau & Cumming (2014), which include deuterium burning from T_eff (solid lines) and the bolometric luminosity (dashed lines) of κ And b, assuming Gaussian error-bars. Entropy values need to be decreased by 0.45 k_B/baryon when comparing with SB12. The contours indicate the 68-, 95-, and 99% confidence levels (thick to thin lines). The color (from dark to light) is proportional to the joint posterior probability at each M and S_init location in the T_eff-based run. The age was taken as Myr (top panel) and Myr (bottom panel).