first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method Q Binzel 2010Natur.463..331B SPEC Q Bus-DeMeo VISNIR Binzel 2019Icar..324...41B SPEC Q Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC Q Bus-DeMeo VISNIR DeMeo 2014Icar..227..112D SPEC S Q 0.570000 0.430000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC V Bus VISNIR Binzel 2004Icar..170..259B SPEC