Location of the components of TYC 8378-252-1 in the log (T_eff)–log (g) diagram (upper panel), log (age)–radius diagram (middle panel), and H–R diagram (lower panel). The Granada evolutionary tracks from ZAMS to TAMS (Claret 2006) for stars of 1.12 M_⊙ (blue line) and 1.28 M_⊙ (red line), corresponding to the primary and secondary stars, respectively, are displayed for Z = 0.007 in all panels. The middle panel displays the radial evolution of the component stars. As discussed in the text, the age of TYC 8378-252-1 was estimated as 3.98 ± 0.80 Gyr. The Padova isochrone line for an age of 3.98 Gyr (Bressan et al. 2012) is indicated by the dashed black curve superimposed on the H-R diagram. In all diagrams, filled and open circles represent the primary and secondary components, respectively. The vertical and horizontal lines are the error bars of the measured quantities.