Doppler map for Hα in 2018. The magenta, blue, cyan, green, and red contours correspond to amplitudes of 95, 80, 65, 50, and 35% of the maximum intensity. The two crosses indicate the velocities of the secondary (top) and primary (bottom) according to the semi-amplitudes K derived by Bjorkman et al. (2002). The maps correspond to a slice at v_z = − 10 km s⁻¹, the mean value in RV of the system; values of +10 or 0 km s⁻¹ provide similar results, however.