Simulation of the orientation, shadow length, and position of jets originating from the neck regions illuminated 1.75 h before the VIRTIS-M observations. Each point corresponds to the center of a facet in shape model version cg-dlr_ spg-shap7-v1.0, with 500 k facets. In the right panel, the score (see text) is plotted. Values of the score close to zero correspond to the best fit to the observations.