*Thomas Widemann1, Colin Wilson2, Richard Ghail3, Dmitri Titov4 (1.Observatoire de Paris, F, 2.Oxford University, UK, 3.Royal Holloway London, UK, 4.ESTEC, NL)
convener:Takehiko Satoh(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Kevin McGouldrick(University of Colorado Boulder), Hideo Sagawa(Kyoto Sangyo University), Thomas Widemann(Observatoire De Paris)