Lomb-Scargle periodogram displaying spectral power versus frequency. The frequency is given in cycles per day so that potential 24 h aliases are easy to identify by their regular spacing. The most prominent peak occurs at 0.91387408 cycles/day, equivalent to 26.26 h, but other large peaks at ~1.9 cycles/day and ~0.1 cycles/day that appear to be 24 h aliases might actually be the true periodicity. A previous period reported in the literature (Sheppard & Jewitt 2003; Thirouin et al. 2016) is compatible with the small alias seen at ~5.94 cycles/day in this plot.