X57 is a metallic asteroid, originally located at the trailing Lagrange point of the gas giant Borr. With the increased development on Terra Nova, a new orbital facility was necessary. Due to a shortage of funding, it was decided to "mine out" X57, using the recovered resources to finish out the interior for habitation. The asteroid was decelerated from Borr's orbit using fusion torches, allowing it to fall into the orbit of Terra Nova.
Recently, communications with the engineering team on X57 have been lost. The fusion torches have reignited, and the asteroid is accelerating towards Terra Nova.
- Note: The Mako can land here.