Barry Mauk¹, Heidi N Becker², Bertrand Bonfond³, John E P Connerney⁴, Randy Gladstone⁵, Matija Herceg⁶, John Leif Joergensen⁶, Peter S Jorgensen⁶, Peter Kollmann⁷, Scott J Bolton⁵ and Steven Levin⁸, (1)The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (3)Université de Liège, LPAP - STAR Institute, Liege, Belgium, (4)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (5)Southwest Research Institute, San Antonio, TX, United States, (6)DTU Space, National Space Institute, Technical University of Denmark, Kgs Lyngby, Denmark, (7)The Applied Physics Laboratory, John Hopkins University, Laurel, MD, United States, (8)Jet Propulsion Laboratory, Pasadena, CA, United States