*Hauke HUSSMANN¹, Kay LINGENAUBER¹, Harald MICHAELIS¹, Masanori KOBAYASHI², Nicolas THOMAS³, Luisa M. LARA⁴, Hiroshi ARAKI⁵, Thomas BEHNKE¹, Klaus GWINNER¹, Jun KIMURA⁶, Nori NAMIKI², Hirotomo NODA⁵, Juergen OBERST¹, Thomas ROATSCH¹, Rafael RODRIGO⁴, Sho SASAKI⁷, Karsten SEIFERLIN³, Tilman SPOHN¹, Olivier BARNOUIN⁸, Doris BREUER¹, Stefano CASOTTO⁹, Jose CASTRO⁴, Gael CHOBLET¹⁰, Ulrich CHRISTENSEN¹¹, Sylvio FERRAZ-MELLO¹², Bernd GIESE¹, Reinald KALLENBACH¹¹, Kei KURITA¹³, Valery LAINEY¹⁴, Alexander LICHOPOJ, Horst-georg LOETZKE, Valery LUPOVKA, William B. MOORE, Adrian RODRIGUEZ, Maria rosaria SANTOVITO, Ulrich SCHREIBER, Rolf SCHROEDTER, Frank SOHL, Simone DEL TOGNO, Bert VERMEERSEN, Mark WIECZOREK, Marie YSEBOODT (1.DLR Institute of Planetary Research, Berlin, Germany, 2.Chiba Institute of Technology, Planetary Exploration Research Center, Chiba, Japan, 3.Physics Institute, University of Bern, Switzerland, 4.CSIC, Instituto de Astrofisica de Andalucia, Granada, Spain, 5.National Astronomical Observatory of Japan, Mizusawa, Japan, 6.Earth-Life Science Institute, Tokyo Institute of Technology, Japan, 7.Osaka University, Toyonaka Japan, 8.Space Dept., The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA, 9.University of Padua, Dept. of Physics and Astronomy and Center for Space Studies, Padova, Italy, 10.Laboratoire de Planetologie et Geodynamique de Nantes, France, 11.Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany, 12.Institute of Astronomy, Geophysics and Atmospheric Science, Sao Paulo, Brasil, 13.University of Tokyo, Earthquake Research Institute, Tokyo, 14.IMCCE-Observatoire de Paris, France, 15.Moscow State University of Geodesy and Cartography, (MIIGAiK), Russia, 16.Hampton University, National Institute of Aerospace, USA, 17.CO.RI.S.T.A. Consortium of Research on Advanced Remote Sensing Systems, Napoli, Italy, 18.Technische Universitat Munchen, Fundamentalstation Wettzell, Germany, 19.Astrodynamics & Space Missions, Faculty of Aerospace Engineering, TU Delft, Netherlands, 20.Institut de Physique du Globe de Paris, France)

Noriyuki NAMIKI¹, *Jun KIMURA², Masanori KOBAYASHI¹, Hauke HUSSMANN³, Kay LINGENAUBER³, TEAM, Gala-japan ⁴ (1.PERC/Chitech, 2.Earth-Life Science Institute, Tokyo institute of Technology, 3.DLR Institute of Planetary Research, 4.JUICE Japan Group)

Noriyuki NAMIKI¹, *Jun KIMURA², Masanori KOBAYASHI¹, Hauke HUSSMANN³, Kay LINGENAUBER³, TEAM, Gala-japan ⁴ (1.PERC/Chitech, 2.Earth-Life Science Institute, Tokyo institute of Technology, 3.DLR Institute of Planetary Research, 4.JUICE Japan Group)