Institut de Mécanique Céleste et de Calcul des Ephémérides,
Daniel Hestroffer obtained his PhD on the subject of the minor planets observed by Hipparcos. During a Research Fellowship position in ESA in 1995-97 he was responsible for preparing the Hipparcos Solar System object observations for publication. Now at the Institut de Mécanique Céleste, Daniel is a member of the Gaia Solar System Working Group, working on the detection, orbit reconstruction, and physical properties of Solar System objects that will be observed by Gaia.
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