HIPPARCOS - On the trail of 100,000 stars

Details HIPPARCOS - On the trail of 100,000 stars HIPPARCOS - On the trail of 100,000 stars

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987asnau..24...47.&link_type=abstract

Astronautik (ISSN 0004-6221), vol. 24, Apr.-June 1987, p. 47, 48. In German.

Astronomy and Astrophysics

Astronomy

Hipparcos Satellite, Satellite Design, Spaceborne Astronomy, Astrometry, Astronomical Catalogs, Stars

Scientific paper

The scientific aims and design concept of the ESA astronomy satellite Hipparcos are discussed, and the development status of the satellite (and its input catalog and data-analysis systems) is indicated in a diagram. Hipparcos is scheduled for Ariane launch in spring/summer 1989 and transfer (in about 3 weeks) to a 36,000-km-high 0.7-4-deg-inclination 12-deg-longitude sun-synchronous orbit for a 2.5-yr mission, during which parallaxes, positions, and proper motions are to be measured for about 500,000 stars (100,000 in a high-accuracy Hipparcos catalog and 400,000 in a lower-accuracy Tycho catalog) and transmitted (at 23 kb/s) to the ESOC ground station at Darmstadt. The double telescope (with two 180-deg windows mounted at a fixed angle of 58 deg to each other) and the optical, electronic, and support hardware are to be installed on a CFRP structure, for the most part using simple screw-together modular busses to facilitate integration.

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