Position of HD 41641 (black dot) in a (log g–logT_eff) diagram. The shaded box corresponds to the error bars obtained from the χ² minimization. The ZAMS (black solid line), theoretical blue edge (blue dashed line), and empirical red edge (red dashed line) of the classical δ Sct instability strip were taken from Breger & Pamyatnykh (1998). Post-main-sequence evolutionary tracks (gray solid lines) are from Guenther & Brown (2004).