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Published online by Cambridge University Press: 25 May 2016
The Hipparcos mission has come to a close with the end of the data processing on August 1996, only three years after the last observations were performed. About 118,000 stellar objects were observed and subsequently solved for their position, parallax and proper motion together with repeated determinations of their magnitude in the Hipparcos band. This paper outlines the main properties of the solution and explains how and when this information will be made available to the astronomical community.