Proxima

Proxima (minor-planet designation: 3 Proxima) with a mean diameter of 510 kilometers, is the largest celestial object in the asteroid belt of the Tigris system and the only object within the belt to accommodate a permanent human population.

Proxima is the third asteroid to be discovered in Tigris (after Nea) and contributes roughly 11% of the asteroid belt's total mass. An M-type asteroid, it is rich in both iron and titanium–a characteristic that made it ideal for exploitation during the Unified Earth Government's earlier expansionary efforts. It has since become something of a port, where tens of thousands of merchants, miners, and engineers made a living. During the, Proxima fell out of contact with the but it provided a rare refuge for the smugglers and salvagers operating in the.

Proxima was one of the few outer colonies to survive the conflict with relatively few issues. It re-established communications with the by 2556, but its inhabitants and government retained its strong sense of independence.