first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method CX 0.32 Bus VIS Carvano 2010A&A...510A..43C PHOT X DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT X X 0.1306 0.1306 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT