first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C 0.43 Bus VIS Carvano 2010A&A...510A..43C PHOT S S 0.7200 0.3960 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X S 0.2400 0.3960 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT