Periodograms obtained using convex light-curve inversion methods searching around the literature value. The top panel shows the results of a period search using all available light curves and the bottom panel shows the results of the period search excluding some of the light curves, with the vertical dashed line marking |$P = 2.385\, \textrm {h}$|⁠, corresponding to the minimum χ² value in the shown interval. The uncertainties for both period determinations would be |$0.003\, \textrm {h}$| for the full period scan and |$0.07\, \textrm {h}$| for restricted. Horizontal continuous lines in both plots mark |$1{{\ \rm per\ cent}}$| increase above the minimumχ² value for each search, and dashed lines – |$10{{\ \rm per\ cent}}$| increase.