Near the end of the First War, when the Hierarchy finally broke throught the Coreward Front in 2134, a new but unfortunately short-lived defensive line was drawn at Rigel. The Alliance was able to hold the star system, but at great cost to the Chenjesu forces, ultimately leading to their defeat. Prior to this, in 2123, Precursor text fragments were found at Rigel describing the "Appendages of Dawn", also known as the Ultron. This star system is also the location for the first contact between Humanity and the Zoq-Fot-Pik.
The following is a list of planets and moons in the system: