Sébastien Charnoz is a planetary scientist who studies planetary dynamics at the Université Paris 7, in Paris .
He also works for the CEA (Center for Atomic Energy) in France.
His work covers problems relating to collisional-dynamics such as the physics of planetary rings and the formation of the Solar System.
He is a specialist of numerical simulations.
Along with André Brahic (Professor at Université Paris 7) he is involved in the imaging team of the Cassini mission, led by Carolyn Porco.
Using a numerical code he wrote for an automatic satellite-detection (among hundreds of images provided by the ISS camera system), he helped the Imaging Team discover the two smallest known moons of the Saturn system in 2004,,,: Methone and Pallene.