Simulation with the highest K-S probability from the comparison of RA coordinate distributions. a) As previously, bullets (•) show the observationally derived spin axis (Fig. 2). Diamonds (◆) correspond to the simulated spin axis orientation of a body with 1:1.90:2.84, and E_l = 6.7 × 10^-5 when an averaging of 10 h and a uniformly distributed random noise with an amplitude of 0.03^◦ have been considered. b) (Thick lines) Lomb periodograms of the RA and Dec simulated data (diamonds shown in Fig. 10a). The Lomb periodograms of the observationally derived coordinates (Fig. 3) have also been included (with thin lines).