The sessions will include discussion on the work of the new IAU Working Groups of Division I on "Precession and the ecliptic" (Session 2) and on "Nomenclature in Fundamental Astronomy" (Session 3), as well as the Working Groups on "Relativity in Celestial Mechanics, Astrometry and Metrology" (Session 4) and "The future of UTC" (Session 5). Discussion on the tasks that were previously part of the ICRS Working Group will also take place (Session 1).

A kickoff meeting for the Project "Descartes - Nutation" (Chair: V. Dehant) the purpose of which is to support cooperative studies devoted to `the understanding of the next decimal of precession/nutation, from the theoretical point of view as well as from the observational point of view' will be included in Session 2. Posters summarizing the proposals selected by the Advisory Board of the Descartes - Nutation project will be encouraged.

2004 being the 150 anniversary of Poincaré's birth, there will be a special emphasis on Poincare's work on Earth rotation in Session 2.