2879 20160701171712.0 ASTROimport-1036 de Cuyper, J.-P. 2009 New Astrometric Reduction of the USNO Photographic Plates of Planetary Satellites An international collaboration has been set up between the US Naval Observatory (USNO) in Washington DC, the IMCCE of Paris Observatory (OBSPM) and the Royal Observatory of Belgium (ROB) to make a new astrometric reduction of the USNO archival photographic plates of planetary satellites. In order to obtain a better knowledge of their orbital motions these photographic plates are digitized with the new generation DAMIAN digitizer at the ROB, providing a geometric stability of better than 0.1 µm on the plates. We focus here on a subset of a few hundred photographic plates of the Galilean satellites, taken with the McCormick and the USNO 26-inch refractors between 1967 and 1998. Specific procedures and algorithms are used to obtain highly accurate positions using the Tycho2, UCAC2 (20 - 30 mas) and later the UCAC3 (10 - 20 mas) catalogues. A comparison with the MAMA digitizer of the Paris Observatory is made through the results obtained from digital mosaic images of the plates. Winter, L. de Decker, G. Zacharias, N. Pascu, D. Arlot, J.-E. Robert, V. Lainey, V. Astronomical Data Analysis Software and Systems XVIII 411 2009 275 http://esoads.eso.org/abs/2009ASPC..411..275D published in NONREF