first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S 0.18 Bus VIS Carvano 2010A&A...510A..43C PHOT S S 0.7061 0.6980 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V S 0.0361 0.6980 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT