A Planetary Catalog is a comprehensive list that includes detailed information about various celestial bodies within our solar system and beyond. This catalog typically features data on planets, moons, asteroids, and comets, providing essential details such as size, composition, orbit, and discovery history. It serves as a valuable resource for astronomers and researchers studying the characteristics and behaviors of these objects. The catalog can also include information about exoplanets, which are planets located outside our solar system, and their potential for supporting life. By organizing this data, the Planetary Catalog helps scientists track discoveries and advancements in the field of astronomy, contributing to our understanding of the universe and its many wonders.