first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method Q Bus-DeMeo VISNIR Binzel 2019Icar..324...41B SPEC S 0.970000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC S Sq Binzel 2010Natur.463..331B SPEC Sq Bus-DeMeo VISNIR Thomas 2014Icar..228..217T SPEC