Phase reddening in spectral slopes evaluated in the 0.55–2.50 μm range. The black asterisks represent data acquired in the Detailed Survey from March to September 2019, while the gray circles thoseacquired during the Preliminary Survey in 2018. The magenta line indicates the linear fit of the Detailed Survey data, which have a higher resolution than the PS (see Table 1), for a phase angle lower than 100°. Errors are smaller than the symbol size.