Hipparcos

Hipparcos is a satellite that was used to make the Hipparcos catalog of 118,000 stars with unprecedented precision. The European Space Agency (ESA) launched it in 1989 and it operated until 1993. It was named for the ancient Greek astronomer Hipparchus and is also an acronym for HIgh Precision PARallax COllecting Satellite.

 References 

Category:Satellites
Category:European Space Agency spacecraft