Astronomical catalogues are organized lists of celestial objects, such as stars, galaxies, and nebulae. These catalogues provide essential information, including the position, brightness, and other characteristics of each object. They help astronomers identify and study various phenomena in the universe. Some well-known catalogues include the Messier Catalogue, which lists 110 astronomical objects, and the Hipparcos Catalogue, which contains precise measurements of over 100,000 stars. These catalogues serve as valuable resources for both professional astronomers and amateur stargazers, facilitating research and enhancing our understanding of the cosmos.