Star catalogs are systematic lists of stars that provide essential information about their positions, brightness, and other characteristics. These catalogs are crucial for astronomers as they help in identifying and studying celestial objects. Each entry typically includes data such as the star's coordinates, magnitude, and sometimes its distance from Earth. There are several well-known star catalogs, including the Hipparcos Catalog, which was created using data from the Hipparcos satellite, and the Henry Draper Catalog, which classifies stars based on their spectra. These catalogs serve as valuable resources for both professional astronomers and amateur stargazers, enhancing our understanding of the universe.