first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method D S 0.610000 0.390000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC X P 0.850000 0.150000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC C X Bus-DeMeo NIR Binzel 2019Icar..324...41B SPEC