1. INAF-IAPS, via Fosso del Cavaliere 100, I-00133 Rome, Italy
2. Università di Napoli ‘Parthenope’, DIST, Centro Direzionale Isola C4, I-80143 Naples, Italy
3. INAF-OATS, Via G.B. Tiepolo 11, I-34143 Trieste, Italy
4. ASI-SSDC, via del Politecnico snc, I-00133 Rome, Italy
5. LESIA, Observatoire de Paris/CNRS/Université Pierre et Marie Curie/Université Paris-Diderot, F-92195 Meudon, France