Orbit of A 730 = HIP 100714. (a) The two orbits calculated by Prieur et al. (2010). In that work, the authors suggested that the longer period orbit, shown here with the solid ellipse, was more likely, but they also calculated a shorter period orbit shown here as the dashed ellipse. (b) The orbit revision proposed here, which is much closer to the short period orbit of Prieur et al. (2010). In both plots, the cross marks the origin of the relative orbit, the open circles represent data points in the literature, the green squares are points appearing in Table 3, and an arrow indicates the direction of orbital rotation (clockwise). Line segments are drawn from the ephemeris position on the orbit to the data point in each case. North is down, east is to the right.