Kepler-K2 light curve data of Quaoar. (a) Lomb–Scargle peri-odogram of the Kepler-K2 light curve of Quaoar. The red marks represent the frequencies that correspond to the previously identified period of P = 8.8402 h, and the new period P = 8.876 h. The blue mark corresponds to the period of 11.748 h; (b) Kepler-K2 light curve folded with the original P = 8.84 h period. The red curve is a best-fit sine function using this period; (c) Same as (b), but folded with the P = 8.884 h period; (d) Same as (b), but folded with the 17.752 h (= 2 × 8.876 h) period.