first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method K S 0.520000 0.470000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC S Bus-DeMeo NIR Marsset 2022AJ....163..165M SPEC S Bus VIS Binzel 2019Icar..324...41B SPEC S Bus VISNIR Binzel 2004Icar..170..259B SPEC