Physical Properties of 2000 Observed Main-Belt Asteroids

We present VRI spectrophotometry of 2238 main-belt asteroids (MBAs) observed with the Sutherland, South Africa node of the Korea Microlensing Telescope Network (KMTNet). Through our broadband spectrophotometry we are able to reliably distinguish among four asteroid taxonomies: S-, C-, X-, or D-type asteroids. We categorize 1964 of the 2238 observed targets as either a S-, C-, X-, or D-type asteroid by means of a machine learning algorithm that was trained with colors synthesized from spectra of observed MIT-UH-IRTF targets that have confidently identified taxonomies. Additionally, we report 0.35-5.5 hr (mean: 3.0 hr) light-curve data for each MBA which allowed us to resolve the complete rotation periods and amplitudes for 1/5th of our targets. Of the 400 targets with resolved rotation periods, 3 have rotation periods potentially below the theoretical zero-cohesion boundary limit of 2.2 hr. Using our determined taxonomies and rotation properties we also show preliminary results of further investigation into MBA family and non-family members within our target list.