Taonas is the main system of the Alteran Federation with very few planets of note.
Main world, several large biodome cities dotting the surface, as it is very inhospitable. Amazing coffee industry.
Main fortress world of the system, It is actually a Dwarf Planet, heavily mined, with massive repair bays within it's surface. A large ring structure orbits the planet, containing spacedocks and weapons for defense. Surface is littered with large anti-space guns, and is completely uninhabitable.
All other planets in the system(4 Gas giants, 5 earth-sized and smaller planets, plus several dwarf planets and an asteroid field) are used for mining colonies, and habitation enviornments.