| 9.00 | [A] Comparison of Inner Planets: Surfaces/Athmosphere |
| Yves LANGEVIN, CNRS, University of Paris | |
| [B] The Breakthrough of Space Astrometry: the Hipparcos Mission | |
| Lennart LINDEGREN, Lund Observatory | |
| 10.00 | [A] Comparison of Inner Planets: Ionosphere/Magnetosphere |
| Michael BLANC, Observatoire Midi-Pyrénées, Toulouse | |
| [B] Astrometry in the 21st Century: the GAIA Concept | |
| Lennart LINDEGREN, Lund Observatory | |
| 11.00 | Coffee Break |
| 11.15 | [A] The Atmosphere of Mars |
| Siegfried BAUER, University of Graz | |
| [B] Astrometry: The Foundation of Astronomy and Astrophysics | |
| Catherine TURON, Observatoire de Paris-Meudon | |
| 12.15 | Lunch Break |
| 14.30 | Operational Ascpects ot the Mercury Orbiter |
| André BALOGH, Imperial College, London | |
| 15.30 | Coffee Break |
| 15.45 | [A] WORKSHOP MERCURY ORBITER |
| Course A led by Marcello Coradini and George Scoon, ESA/ESTEC | |
| [B] WORKSHOP ASTROMETRY/INTERFEROMETRY | |
| Course B led by Serge Volonté and Robin Laurance, ESA/ESTEC | |
| 19.00 | Dinner |
| Evening lecture: | A New Angle on the Universe: A Historical Perspective of Astrometry |
| Michael Perryman, ESA/ESTEC |