Stellar evolution mass tracks for NY Hya A and B computed with different values of the convective mixing length parameter, α_MLT = 0.75,  1.00,  1.25,  1.50,  2.04. Panelsa, c, e, g show model radii and T_effs as a function of age, respectively, for mass tracks with M = 1.160 M_⊙ (NY Hya A). Decreasing α_MLT leads to larger radii and cooler temperatures at a given age. Panelsb, d, f, h are the same, but computed with a model mass M = 1.168 M_⊙ (NY Hya B). Solar metallicity models are shown in panelsa–d and super-solar metallicity models are shown in panelse–h. The horizontal short-dashed lines indicate the measured values from Table 11; the horizontal solid lines indicate the corresponding 1σ uncertainty. The horizontal dot-dashed lines in the T_eff panels represent the T_eff measured from SED fitting. The grey shaded regions indicate a model-inferred age range.