Andrew French, University of Colorado at Boulder, Ann and H.J. Smead Department of Aerospace Engineering Sciences, Boulder, United States, Jay McMahon, University of Colorado at Boulder, Ann and H.J. Smead Department of Aerospace Engineering Sciences, Boulder, CO, United States, Daniel Jay Scheeres, University of Colorado Boulder, Ann and H.J. Smead Department of Aerospace Engineering Sciences, Boulder, CO, United States, Yu Takahashi, Jet Propulsion Laboratory, Pasadena, United States and Dante S Lauretta, University of Arizona, Lunar and Planetary Laboratory, Tucson, AZ, United States