Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phdt.........3j&link_type=abstract
Thesis Tuebingen Univ. (Germany, F.R.). Astronomisches Inst.
Astronomy and Astrophysics
Astronomy
Hipparcos Satellite, Planetary Nebulae, Stars, Stellar Luminosity, Stellar Parallax, European Space Programs, Galaxies, Signatures
Scientific paper
The scientific mission of the Hipparcos/Tycho mission were carried out by means of a special optical telescope in geostationary orbit to measure the position, the eigen motions and the trigonometric parallaxes and the luminosity of a lot of stars. To obtain the position of the stars, the angle between two distant stars is measured. Since around 100,000 stars are listed in the Hipparcos input catalog, a lot of stars can be recorded.
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