first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C S 0.540000 0.390000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC L Bus-DeMeo VISNIR Clark 2009Icar..202..119C SPEC S K Tholen VIS Clark 1995Icar..113..387C PHOT