first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S-complex Bus-DeMeo NIR Marsset 2022AJ....163..165M SPEC S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC Sk Bus VIS Binzel 2019Icar..324...41B SPEC Sk Bus VIS Bus 2002Icar..158..146B SPEC Sk Bus VISNIR Binzel 2004Icar..170..259B SPEC