Phase dispersion minimization plot showing the minimization parameter as a function of the assumed rotational frequency. Minima at Ω₁ = 1.669 day⁻¹ and Ω₂ = 3.339 day⁻¹ correspond to rotational periods at 0.599 day and 0.299 day, respectively. Ω₁ and Ω₂ denote the two-peaked and single-peaked lightcurves, respectively.