first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method U Bus VISNIR Binzel 2004Icar..170..259B SPEC V Bus-DeMeo NIR Marsset 2022AJ....163..165M SPEC V Bus-DeMeo VISNIR Binzel 2019Icar..324...41B SPEC V Bus-DeMeo VISNIR Thomas 2011AJ....142...85T SPEC V Bus-DeMeo VISNIR Thomas 2014Icar..228..217T SPEC V 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC