1. NASA Goddard Space Flight Center, Planetary Systems Laboratory, Greenbelt, Maryland, United States
2. Sorbonne Université, Université Paris-Cité, Université PSL, CNRS, LESIA, Observatoire de Paris, Meudon, France
3. Max Planck Institute for Solar System Research, Göttingen, Germany
4. American University, Department of Physics, Washington, District of Colombia, United States
5. University of Maryland, Astronomy Department, College Park, Maryland, United States
6. University of Arizona, Department of Astronomy and Steward Observatory, Tucson, Arizona, United States