L. R. Bedin (1), G. Piotto (1), J. Anderson (2), I. R. King (3), S. Cassisi (4), Y. Momany (1). ((1) Dipartimento di Astronomia, Universita` di Padova, ITALY (2) Department of Physics and Astronomy, Rice University, USA, (3) Astronomy Department, University of Washington, USA, (4) Osservatorio Astronomico Collurania, ITALY.)
