*Alan R Hildebrand¹, Lincoln TJ Hanton¹, Fabio Ciceri¹, Olivier S Barnouin², Michael G Daly³, Jeff A Seabrook³, Benjamin Rozitis⁴, Joshua P Emery⁵, Daniella N DellaGiustina⁶, Bashar Rizk⁶, Michael C Nolan⁶, Dante S Lauretta⁶, Catherine Johnson¹⁰, Daniel J Scheeres⁷, Edward B Bierhaus⁸, Paul Sanchez⁹ (1.Department of Geoscience, University of Calgary, Calgary, AB, Canada, 2.The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA, 3.The Centre for Research in Earth and Space Science, York University, Toronto, ON, Canada, 4.The Open University, Milton Keynes, UK, 5.Northern Arizona University, Flagstaff, AZ, USA, 6.Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA, 7.Smead Department of Aerospace Engineering, University of Colorado, Boulder, CO, USA, 8.Lockheed Martin Space, Littleton, CO, USA, 9.Colorado Center for Astrodynamics Research, University of Colorado, Boulder, CO, USA, 10.Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada)

*Kevin John Walsh¹, Ronald Ballouz², William F Bottke¹, Chrysa Avdellidou³, Harold C Connolly Jr.⁴, Marco Delbo³, Daniella N DellaGiustina², Erica R Jawin⁵, Timothy McCoy⁵, Patrick Michel³, Tomokatsu Morota⁶, Michael C Nolan², Steven R Schwartz², Seiji Sugita⁶, Dante S Lauretta² (1.Southwest Research Institute Boulder, 2.Lunar and Planetary Laboratory, University of Arizona, 3.Laboratoire Lagrange, Université Côte d’Azur, 4.Dept. of Geology, Rowan University, 5.Smithsonian Institution National Museum of Natural History, 6.University of Tokyo)