Performance of the period search algorithm as a function of the number of orbital cycles. The blue points with error bars represent the fractional difference between the measured and the input orbital period with SLR error estimates, sorted by descending number of cycles. The grey line with points shows the number of cycles, calculated as the period divided by the time base, plotted on the right axis. The period error scales strongly with the number of cycles. Note that the number of cycles for cases ~60–100 is close to one, and cases that are shaded grey and hatched do not show eclipses.