Asteroid (195) Eurykleia. Left: observation to model ratios versus wavelength for models AM 1 (first and third plot) and AM 2 (second and fourth) using all data to minimise the χ² (top) and excluding the W4 data (bottom). The colour indicates the aspect angle at which the observations were taken. The AM 1 model’s pole orientation is such that the WISE data would have been taken at a sub-observer latitude of ~25° south, and the rest of the data at ~25° north. On the other hand, if pole 2 is correct, then all data would have been taken at similar “equator-on” aspect angles between 80° and 100°. Right: χ² versus thermal inertia curves for model AM1 (top) and AM2 (bottom) using all thermal data.