The Helios System was a star system held by The Royal Allegiance.
Located in the mid of Allegiance territory, the Helios System was named after its star. It was quite a large system, with 14 worlds. A few were gas giants, but most were small, rocky and largely inhospitable planets with poor mineral quantity. A large and violent asteroid field encompassed the system and enveloped the seventh to the twelfth planets in the system, rendering them inaccessible and unsuitable for colonisation efforts, even when their hostile atmospheric conditions were overlooked.
The world of Coeus was located in this system. It was a valuable mining and materials facility for the Allegiance. Raw materials were mined by automated drones on the planet's surface and then sent to an artificial moon, Brontes, for refining, processing and manufacture.