first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C Tholen VIS Lazzaro 2004Icar..172..179L SPEC Cb Bus VIS Lazzaro 2004Icar..172..179L SPEC D Barucci-Tholen VIS Licandro 2008A&A...481..861L SPEC K M 0.560000 0.310000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC