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Manager of the 9th catalogue of orbits of spectroscopic binaries (aka SB9) for the IAU Commission 26. President of the IAU Commission 30 (Radial Velocities).
Gaia mission, in particular binary related problems.
Re-processing the Hipparcos Intermediate Astrometric Data of some specific groups of stars (binaries, C stars, Oxygen-rich Mira Variables, VIM, DMSA/X, exo-planets, ...)
Astronomy camps for 18+ adults.
June 8th 2004, transit of Venus, live on the Web.
Series of public lectures known as 'Cours Public d'Astronomie' and public nights at the university observatory recently renovated.