Coruscant is an ecumenopolis planet in the fictional Star Wars universe. It was first described in Timothy Zahn's 1991 novel Heir to the Empire. The planet made its first on-screen appearance in a scene added to Return of the Jedi for its 1997 re-release. It has gone on to become an important location in the Star Wars universe and appears frequently in Star Wars media. In-universe, Coruscant is a politically and strategically important planet, serving as the capital and seat of government for the Republic and Empire, as well as the headquarters of the Jedi Order. It is typically depicted as a bustling, yet highly stratified planet-spanning metropolis. Throughout the city's centuries-long development, new city blocks were built on top of old ones, forming levels. Coruscant has 5127 levels, with the 5127th being the wealthiest and the 1st being the poorest.Coruscant has four moons, and is the sixth planet out of the eleven that make up the system of the same name. It lies within the Coruscant Subsector of the Corusca Sector, located in the Core Worlds galactic quadrant region. The sun, Coruscant Prime, is the zero coordinate of the Star Wars galaxy (as opposed to its galactic center). In Legends, Coruscant was once referred to as Notron or Queen of the Core. It was renamed Imperial Center during the reign of the Galactic Empire (as depicted in the original films) and Yuuzhan'tar during the Yuuzhan Vong invasion (as depicted in the New Jedi Order novel series). The planet's capital city was initially Galactic City (built at least in 100,000 BBY, partially destroyed in 27 and 44 ABY). It was Imperial City under the Galactic Empire and was Republic City (or the City of Spires) under the Galactic Republic. The planet was code-named Triple Zero during the Clone Wars. The demonym and adjective form of the planet's name is Coruscanti. Source: Wikipedia (en)