Beschreibung:
AbstractThe Hipparcos observing programme is composed of 118 000 selected stars, one QSO (3C273), 48 minor planets, and 2 satellites of major planets. These objects were selected on the ground of scientific proposals submitted by the world-wide astronomical community, while taking into account die specific operating mode of the satellite and using at best its observing possibilities. The content of the stellar part of this observing programme and the way in which the star selection was performed is described in details in a paper accepted for publication in Astronomy & Astrophysics.