Erde Fabrica
Established in 2065 Sol Date Standard ("4230 AD" Old Times, [Documents Pending]), The Erde Fabrica is the main 'star-forge' of Sol. It sits in tight orbit with Sol 4, and provides most of the Military ships for the Interstellar Union and it's allies. The Fabrica itself measures 2725 Meters top to bottom, and about 1816 meters in diameter. Though due to the modular nature of the Fabrica the diameter can be as small as 454 meters at places.
It also happens to be the home of The Red Faceres ("Red Makers", TRF, [Documents Pending]), an influential faction of the Sol system. They are the current ruling party in that part of the system.
This station is possibly the most important man-made body in the whole system, and is gaurded by most if not all the key political powers in the surroundong sectors.