first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method B Ch Bus-DeMeo VIS de Leon 2016Icar..266...57D SPEC C 0.960000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC F Tholen VIS Tatsumi 2022A&A...664A.107T SPEC