O–C diagrams for the thermophysical model of (159) Aemilia using SAGE model 1. They illustrate how well the spin/shape model works against thermal infrared data. The dashed lines indicate +/–10% in the observation-to-model ratio, which corresponds to typical flux errors of thermal measurements. There are no trends with wavelength, rotation, or pre- and post-opposition asymmetry. For the best fitting thermal parameters see Table 7. Triangles: data from AKARI, squares: WISE W3/W4, small diamonds: IRAS.