T-4, a satellite of the planet Thaere Privo within the Thaereian system located in the Expansion Region, was a moon.
T-4's initial appearance was in the Living Force adventure titled Memories, where it is depicted and named as a moon in orbit around Thaere Privo. Conversely, in the web article supplementing the adventure, Trade and Trade Alike, T-4 is referred to in a sidebar as "the rather uncreatively named fourth world of the Thaereian system."