The results of a combined pole and spin-state change (YORP factor) search using all available light curves are shown in the upper panel, and using a selection of light curves in the lower panel. The horizontal axis indicates the rate of change of angular rotation rate expressed in rad/d² (the YORP factor) and on the vertical axis, the quality of the fit for the best shape model developed assuming the given YORP factor. The χ² differences are very small, with the green horizontal lines marking |$1{{\ \rm per\ cent}}$| increase above the minimal values, and the red lines marking |$5{{\ \rm per\ cent}}$| increase. The grey circle in each panel indicates the minimum χ² value.