first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method V Bus VIS Bus 2002Icar..158..146B SPEC V 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT V 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC