Observed relative lightcurves used in our shape modelling analysis, compared with best-fit model lightcurves. The two models represent two slightly different scattering functions. They are the Lommel-Seeliger (solid line), and a combination of Lommel-Seeliger and Lambertian scattering laws (dashed line). The overall fit is quite good with the exception of a few lightcurve segments. These cases may be due to several factors including: the presence of one or more large concavities on the surface, which this modelling procedure is not sensitive to; non-uniform surface albedo; and imperfect scaling of the lightcurves to the data, accentuating differences between the two.