Stavro Ivanovski¹, Anna Milillo², Monio D Kartalev³, Stefano Massetti⁴, Stefano Orsini², Valeria Mangano², Christina Plainaki⁵, Adrian Kazakov⁶, Roberto Sordini⁶, Alessandro Mura⁶, Elisabetta De Angelis², Rosanna Rispoli², Francesco Lazzarotto², Alessandro Aronica² and Raffaella Noschese⁶, (1)National Institute for Astrophysics, Astronomical Observatory of Trieste, Trieste, Italy, (2)INAF-IAPS, Rome, Italy, (3)Inst Mechanics, Sofia, Bulgaria, (4)INAF / IAPS, Rome, Italy, (5)Italian Space Agency, Rome, Italy, (6)IAPS-INAF, Rome, Italy