Theoretical mass function vs the inclination angle. Horizontal red lines represent the mass function derived from the orbital solution. The vertical blue dotted line represents the inclination angle estimated for our star. The orange surface represents the ±1σ confidence level. The inclination angle of i = 50° (see Sect. 4.1) implies a theoretical mass function computed with M₂ (M_⊙) = 0.0245 ${}_{+0.0025}^{-0.0027}$.