Hipparcos Catalog

The Hipparcos Catalog is a detailed star catalog created from data gathered by the Hipparcos satellite, launched by the European Space Agency in 1989. It provided precise measurements of the positions, distances, and motions of over 100,000 stars. This was revolutionary for astronomy, allowing scientists to better understand the structure of our galaxy and the universe. The catalog has been instrumental for various fields, including astrophysics and navigation. It serves as a valuable reference for astronomers and has paved the way for further studies in stellar dynamics and cosmology.