first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C Bus NIR Duffard 2004Icar..171..120D SPEC C 0.990000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC C C Movis NIR Popescu 2018A&A...617A..12P PHOT