Face-on view of possible trajectories for the orbiting free case and considering the southeastern features only (left), the southeastern and the northwestern features (middle), and the northwestern features only (right). For each structure, a circle materializes the stellocentric position calculated from the model at the epochs when the structure is detected. Two solutions, bound and unbound, are plotted in the case of the northwestern features (right). The observer is at the bottom. Counter-clockwise rotation is assumed.