  The Gaia mission started its regular observing program in the summer of 2014,
and since then it is regularly obtaining observations of asteroids. This paper
draws the outline of the data processing for Solar System objects, and in
particular on the daily "short-term" processing, from the on-board data
acquisition to the ground-based processing. We illustrate the tools developed
to compute predictions of asteroid observations, we discuss the procedures
implemented by the daily processing, and we illustrate some tests and
validations of the processing of the asteroid observations. Our findings are
overall consistent with the expectations concerning the performances of Gaia
and the effectiveness of the developed software for data reduction.
