first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method B Bus VIS Binzel 2019Icar..324...41B SPEC B Bus VIS Bus 2002Icar..158..146B SPEC C 0.334 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT P 0.880000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC