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Hipparcos - Wikipedia The word "Hipparcos" is an acronym for HIgh Precision PARallax COllecting Satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes
Home - Hipparcos - Cosmos ESA's Hipparcos space astrometry mission was a pioneering European project which pinpointed the positions of more than one hundred thousand stars with high precision, and more than one million stars with lesser precision
ESA - Hipparcos overview Hipparcos, a European mission, pinpointed the positions of more than one hundred thousand stars to high precision, and more than one million stars to lesser precision Hipparcos turned slowly on its axis and repeatedly scanned right around the sky at different angles
HIPPARCOS - Hipparcos Main Catalog - NASA The Hipparcos and Tycho Catalogues are the primary products of the European Space Agency's astrometric mission, Hipparcos The satellite, which operated for four years, returned high quality scientific data from November 1989 to March 1993
Hipparcos - NASA Science Launched in August 1989 by an Ariane-4 rocket, Hipparcos was a pioneering space experiment dedicated to the precise measurement of the positions, parallaxes and proper motions of the stars
Astro Data Lab - Hipparcos Launched in August 1989, Hipparcos successfully observed the celestial sphere for 3 5 years before operations ceased in March 1993 Calculations from observations by the main instrument generated the Hipparcos Catalogue of 118,218 stars charted with the highest precision
Hipparcos | Astronomical Measurement Mapping Satellite . . . Hipparcos, Earth-orbiting satellite launched by the European Space Agency in 1989 that over the next four years measured the distances to more than 100,000 stars by direct triangulation using observations of parallax from either side of Earth’s orbit around the Sun