The Commonwealth of Centaurus is a human nation centered around the Alpha Centauri and Proxima Centauri star systems, as well as holding territory outside of these two. One of the dominant human powers since the end of the Created Crisis, it boasts a large navy and robust internal infrastructure. It has championed itself as the heirs to the UEG, despite the continued existence of the UEG in the Sol System. Despite this, it continues to work to bring other human colonies under its control, including New Carthage and even Earth.
Its capital is in the city of Odrys on the colony of Thracia in the Alpha Centauri system, where its military headquarters is also located.