first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S Bus-DeMeo VISNIR Binzel 2019Icar..324...41B SPEC S Tholen VIS Xu 1995Icar..115....1X SPEC S 1.000000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC S Q 0.750000 0.250000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC Sk Bus VIS Bus 2002Icar..158..146B SPEC Sk Bus VISNIR Binzel 2004Icar..170..259B SPEC X 0.152 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT