first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S 0.24 Bus VIS Carvano 2010A&A...510A..43C PHOT S S 0.9248 0.7740 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X S 0.2134 0.7740 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT