It is a comprehensive star catalog and celestial map set, widely employed in astronomy. It serves as a reference for locating and identifying stars, galaxies, and other astronomical objects. Its epoch designation refers to the coordinate system’s alignment to the year 2000, ensuring accurate positional data for celestial objects at that specific time. As an example, researchers might use it to pinpoint the location of a newly discovered supernova in relation to nearby stars.
The value of this resource stems from its ability to provide a standardized and readily accessible database of celestial object positions. Historically, such atlases played a pivotal role in facilitating astronomical research and observation. They enable astronomers to plan observations, guide telescopes, and compare current observations with historical data, contributing to a greater understanding of the universe and its evolution. Its creation and subsequent use advanced the field significantly.