Seldonis

Seldonis is a binary system and one of the core worlds of the known galaxy, with a population in the tens of billions. It is best known for its industry which includes Caramont Yards based on the Forge station.
The primary system has an extensive debris belt in the outer system, a pair of gas giants that are home to numerous refineries, and two habitable planets. Much of the system is powered by array of light-capturing platforms.
Seldonis B is less useful, only possessing rocky planets and a modest debris belt, but plenty of habitats are there as well.
The system contains dozens of space stations and numerous orbital habitats. Thousands of ships are constantly moving through.