first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method Q 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC Sq Bus-DeMeo VISNIR Binzel 2019Icar..324...41B SPEC Sq Bus VIS Bus 2002Icar..158..146B SPEC Sq Bus VISNIR Binzel 2004Icar..170..259B SPEC