first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method A A 0.5768 0.5768 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT B Bus VIS Bus 2002Icar..158..146B SPEC K B 0.450000 0.390000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC S 0.607 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT