first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method V Bus-DeMeo VISNIR Binzel 2019Icar..324...41B SPEC V Bus-DeMeo VISNIR Popescu 2019A&A...627A.124P SPEC V Bus VISNIR Binzel 2004Icar..170..259B SPEC V 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC