Animations showing the SAM rotational model and the fit to lightcurves from April 20 (a), April 22 (b), May 9 (c), and May 7 (d), respectively. The angles between the line of sight and the angular momentum vector L are 16^∘, 14^∘, 4﹩\mathop{.}\limits^{{\unicode{x000b0}}}﹩5, and 5^∘ in the four epochs, respectively. Therefore, there is a strong projection effect for the angular momentum vector, which almost directly points away from the viewer in this case. Animations of all panel are available online. The observational time intervals and the real-time duration of the animation are the same as those given for Figure A1.

(An animation of this figure is available in the online article.)

(An animation of this figure is available.)

The video/animation of this figure is available in the online journal.