Simulated vs. recovered period. The left and right panels show the 5 yr and 10 yr missions, respectively. The upper and lower panels differ only for the starting point of the MC: the ideal case (MC started at the true value) in the upper panel, and the circular-orbit model best-fit point in the lower panel. The colours show the density of points where they overlap, going from blue (no overlap) to red (maximum overlap). The error bars show the 68.3% highest posterior density interval. The red solid lines show the one-to-one relationship. The period is correctly recovered in the majority of cases. The two sequences parallel to the main relationship are populated with systems that are incorrectly fit with edge-on, high-eccentricity orbits.