first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method Q Bus VIS Binzel 2019Icar..324...41B SPEC Q Tholen VIS Binzel 2001Icar..151..139B SPEC R S 0.620000 0.360000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC V SV Birlan VISNIR Lazzarin 2001A&A...375..281L SPEC+PHOT