first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C Bus VIS Bus 2002Icar..158..146B SPEC C Tholen VIS Xu 1995Icar..115....1X SPEC C P 0.780000 0.110000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC P 0.990000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC X 0.962 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT