first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT C 0.48 Bus VIS Carvano 2010A&A...510A..43C PHOT X 0.486 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT