first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method P Barucci-Tholen VIS Licandro 2008A&A...481..861L SPEC P 0.990000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC U Bus-DeMeo VISNIR Binzel 2019Icar..324...41B SPEC