Titan

The largest moon of Saturn, Titan. (a location seen in the Prison Series)

It is never visited in game, so it isn't clear if it was terraformed or if people live in stations and dome habitats. As Earth can be seen as the base of the Neo Terra, Titan can be seen as the base of New Solars.

Titan Station, has sharper edges than Earth's Space Station.

History
As Mars has been terraformed, new colonize spring up all over the Solar System.

With Titan being one of the largest. In the year 2186 multiple Space colonies unite and delare independance from earth with Titan being the headquarters. The now formed "Confederacy of Space Humans" would have some conflict with the "Confederation of Earth". However, both earth and other colonies agreed that Titan became to powerful and to avoid a future war the Space Federation was founded in the hope to end any war.

Titan Station is one of the main bases of New Solars and the center of their policies.

The population is around 1.2 billion, at this point of the Titan (area).

Geography and Topography
The real life Titan is a 5150 km, moon of Saturn.

It is one of the only moon with a dense atmosphere. It is still within the magnetosphere of Saturn. Earth-like with a solid ground and large seas. It is however, very unearth-like.

Temperatures of -179.15 Celsius (-290.47°F) are the average. The atmosphere has multiple organic compounds but almost no oxygen. The seas are made out of liquid methane. Half of the "solid" part is made out of water ice and lighter silicate mineral.

Vulcano's on Titan do not release liqued rock but water possibly rich in methan.

It is currently assumed that simular to earth's fluid rock magma. Underneath titans crust, lies a large water ocean, on which the surface floats.

It isn't clear if the location, was terraformed in the Prison Series.