INS Jericho is a space station in the Stanton System, located close to microTech's lagrangian point 1 (aka MIC L1). It is a naval base, acting as a forward outpost for quick deployment of UEE Navy forces within the Stanton system. 
The space station was supposedly implemented with Star Citizen Alpha 3.12.0, which also featured the gas cloud tech. The station was placed within an extensive formation of gas clouds in an attempt to hide it. Shortly after Alpha 3.12 was deployed to the "wave 1" PTU, a player / reddit user named Storm Eagle posted multiple pictures on spectrum and reddit. This resulted in many other players attempting to find it.
Since Star Citizen Alpha 3.12.1 however, the station has its own quantum marker and can be travelled to freely to allow for civilians to support the Navy in the efforts fighting the XenoThreat invasion.