first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method L Bus-DeMeo VISNIR Devogele 2018Icar..304...31D SPEC L Bus VIS Bus 2002Icar..158..146B SPEC P M 0.720000 0.270000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC