first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C Bus VIS Bus 2002Icar..158..146B SPEC S M 0.860000 0.140000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC Xt Xt Movis NIR Popescu 2018A&A...617A..12P PHOT