first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method R S 0.830000 0.150000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC V Bus VIS Bus 2002Icar..158..146B SPEC V Bus VISNIR Hicks 2014Icar..235...60H SPEC+PHOT