Example of photometric data of 495 Eulalia (symbols) fitted with synthetic lightcurves (solid curves) produced by the model in Fig. 4. Because Eulalia’s rotation period is about 29 h, the data from one night cover always only a part of the rotation cycle. The viewing and illumination geometry for the pole solution P1 is given by the aspect angle θ, the solar aspect angle θ₀, and the solar phase angle α.