Eldorado was a planet located somewhere in the space of the galaxy's Alpha or Beta Quadrants, in orbit of the Eldamas 344 star system, at coordinates 2.47S 4.69W.
History and specifics[]
In the 23rd century, Eldorado was home to a Federation colony that was a center for mining and trade. By reference stardate 2/2306.01, the world had a population of around 1 billion individuals of various races and cultures, chartered as an associate member of the Federation. (FASA RPG module: The Federation)
Eldorado was named for its natural wealth in numerous types of rare minerals, including dilithium deposits. Starfleet maintained a small patrol station here with a squadron of corvettes to discourage pirates. (FASA RPG module: The Federation)