Radial velocity as a function of orbital phase for the R Aqr Mira and WD from the orbital elements of Gromadzki & Mikołajewska (2009). The WD orbit, which is not observed, assumes the ratio of the Mira to WD mass is 1.6. Zero phase is a time of periastron passage. A disk eclipse of duration one-tenth the orbital period, 4.4 yr, is marked. The characteristics of the eclipse are not well known. Ingress and egress times could differ significantly from those shown.