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Hipparcos

Hipparcos was ESA completed space astrometry mission to map stellar positions, distances, motions, and brightness. Its recovery from a failed apogee boost motor enabled more than three years of high-quality observations.

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Identity

Aliases
Hipparcos astrometry missionHipparcos and Tycho mission
Name
Hipparcos
Status
completed

Details

Astronauts
-
Description
Hipparcos was ESA completed space astrometry mission to map stellar positions, distances, motions, and brightness. Its recovery from a failed apogee boost motor enabled more than three years of high-quality observations.
Destination
Highly eccentric Earth orbit at approximately 500 km perigee and 36,000 km apogee after apogee-boost motor failure
End Date
1993-08-15
Launch Site
Outcome
Hipparcos produced the Hipparcos Catalogue of 118,218 stars and the Tycho Catalogue of more than one million stars before communications were terminated in August 1993.
Programs
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Start Date
1989-08-08
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Assets & Meta

Creation Time
August 1, 2026 at 08:48:07 UTC
Updated Time
August 21, 2026 at 01:39:21 UTC

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