first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method K 0.980000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC U Bus-DeMeo NIR Binzel 2019Icar..324...41B SPEC X 0.584 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT