Position of HD 47887 (diamond) and HD 47777 (asterisk) in the Hertzsprung–Russell (HR) diagram in comparison with Milky Way composition evolutionary tracks for 7 M_⊙ (black solid line), 9 M_⊙ (red dotted line), and 10 M_⊙ (blue dash-dotted line) stars computed by Brott et al. (2011). The black short-dashed line shows the zero-age main sequence (ZAMS), while the black long-dashed line shows the isochrone calculated with the adopted cluster age of log   t = 6.89.