Philip W Valek¹, Frederic Allegrini², Fran Bagenal³, Scott J Bolton¹, John E P Connerney⁴, Robert W Ebert¹, Thomas Kim⁵, William S Kurth⁶, Steven Levin⁷, Philippe Louarn⁸, David J McComas⁹, Jamey R Szalay⁹, Michelle F Thomsen¹⁰ and Robert J Wilson¹¹, (1)Southwest Research Institute, San Antonio, TX, United States, (2)Southwest Research Institute San Antonio, San Antonio, TX, United States, (3)Univ Colorado, Boulder, CO, United States, (4)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (5)University of Texas at San Antonio, San Antonio, TX, United States, (6)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, (7)Jet Propulsion Laboratory, Pasadena, CA, United States, (8)IRAP, CNRS, Toulouse, France, (9)Princeton University, Department of Astrophysical Sciences, Princeton, NJ, United States, (10)Planetary Science Institute, Tuscon, AZ, United States, (11)University of Colorado Boulder, Boulder, CO, United States