1. Institute of Astronomy, University of Cambridge, Cambridge, UK.
2. Astrophysikalisches Institut und Universitätssternwarte, Friedrich-Schiller-Universität Jena, Jena, Germany.
3. Space Sciences, Technologies, and Astrophysics Research (STAR) Institute, Université de Liège, Liège, Belgium.
4. CNRS, Institut de Planetologie et dAstrophysique de Grenoble (IPAG, UMR 5274), University of Grenoble Alpes, Grenoble, France.
5. LESIA-Observatoire de Paris, UPMC University of Paris 06, University of Paris-Diderot, Meudon, France.
6. Steward Observatory, Department of Astronomy, University of Arizona, Tucson, AZ, USA.