1. LATMOS/IPSL; Université Versailles Saint Quentin, CNRS; Verrières-le-Buisson France
2. LESIA; Observatoire de Paris; Meudon France
3. LASP; University of Colorado; Boulder Colorado USA
4. IFSI, INAF; Rome Italy
5. THEMIS, UPS853; CNRS; La Laguna Spain
6. Department of Astronomy; University of Padova; Padova Italy
7. Osservatorio Astronomico di Padova, INAF; Padova Italy