H|$\alpha$| radial velocity curve of primary star at quiescence. The value of |$K_1$| obtained is |$70.5 \pm 1.4$| km s|$^{-1}$|⁠, with a goodness of fit |$\chi ^2 = 139.0$| with 60 deg of freedom and standard deviation |$\sigma =1.52$|⁠. Note again that the data fit reasonable well to a circular orbit.