Astronomical classification is the categorization and organization of celestial objects based on their physical and chemical properties, as well as their observable characteristics such as brightness, temperature, and mass. Astronomers use classification systems to group objects like stars, galaxies, and other celestial bodies into distinct categories, which helps in understanding their origins, evolution, and behavior. There are various classification systems used in astronomy, such as the Hertzsprung-Russell diagram for stars, the Tuning Fork diagram for galaxies, and the luminosity class for variable stars. Astronomical classification plays a crucial role in our understanding of the universe and its diverse range of celestial objects.