Physical Characterization of Chelyabinsk-Sized (~20 meter) Near-Earth Asteroids: Implications for Impact Hazard, Meteorite Source Bodies, and Human Exploration

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V. Reddy, R. R. Landis, J. A. Sanchez, P. S. Hardersen, B. Burt, F. E. DeMeo, M. J. Gaffey, L. Le Corre

46th Lunar and Planetary Science Conference (2015), Abstract #1289

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