Its three native species were the Jelna, the Zami, and the Chelons. Significant expatriate populations of Coridanites, Ithenites, Xarantine, and even Humans were also citizens. (ENT - Rise of the Federation novel: Tower of Babel) Its cities included New Burbank and the Rigel Trade Complex. (ST reference: Star Charts) Its capital city was Tregon. (ENT - Rise of the Federation novels: A Choice of Futures, Tower of Babel)
- The planets of the Beta Rigel system in Star Charts are inextricably linked to those of the Rigel system seen in other sources. In a merged continuity, the United Rigel Colonies would likely comprise Federation-settled colonies on the worlds of Rigel II, Rigel IV, Rigel V (each are stated to be Federation members in other sources), Rigel VI and Rigel X.