first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C Tholen VIS Xu 1995Icar..115....1X SPEC C 0.980000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC C Kl Movis NIR Popescu 2018A&A...617A..12P PHOT