first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC S Bus VIS Bus 2002Icar..158..146B SPEC S Howell VISNIR Howell 1994JGR....9910847H PHOT S Tholen VIS Clark 1995Icar..113..387C PHOT S 0.980000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC