first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method B Bus-DeMeo NIR Binzel 2019Icar..324...41B SPEC B 0.920000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC S 0.493 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT