a) As previously, bullets (•) show the observationally derived spin axis (Fig. 2). Small dots (·) are the spin axis orientation for a simulated body with inertia moments 1:1.90:1.905 and an E_l = 2.9 × 10^-6 (see text). The data are displayed with a time separation of 1 h. As previously, diamonds (◆), to be compared with the bullets distribution, correspond to the averaging within 10 h of the instantaneous theoretical values. b) Lomb periodogram of the Dec-simulated data (diamonds) shown in Fig. 7a. The x-axis here ranges up to 300 h to show that no significant periodicity is detected beyond P_c = 13 h. Given the wide range covered by the x-axis, the two significant periodicities P_φ = 11.85 h and P_c appear very close in the figure.