1. Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California.
2. LESIA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, Meudon, France.
3. Virtual Planetary Laboratory, University of Washington, Seattle, Washington.
4. Department of Astronomy, University of California Berkeley, Berkeley, California.
5. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California.