The Thaereian system, a star system situated close to the Cularin system, was a Expansion Region and revolved around a fading yellow star. Within this system were several planets, namely Odae Ripp, Thaere Privo, and Zham Hlar.
The system was initially depicted in Over Thaere as having only three planets. Conversely, Trade and Trade Alike erroneously identified T-4, a moon of Thaere Privo, as the system's fourth planet.