RV measurements for vB 80, compared with a section of the spectroscopic orbit calculated from the visual elements of G. Torres (2019a) and the velocity semiamplitudes inferred from the individual masses in that work. The only free parameter we have adjusted is the center-of-mass velocity (dotted line), γ = 40.06 km s⁻¹. The one discrepant primary measurement happens to be from a spectrum of a much lower signal-to-noise ratio compared to the others.