Star Fleet Academy Class of Y143
Outpost sensor station
The Outpost Sensor Stations were a series of at small bases constructed on asteroids located in strategically important locations along the Neutral Zone. This allowed the Federation, to monitor its side of the Neutral Zone. The sensor range of these bases reached out as far as the next nearest base. Combined with the sensors on base stations, starbases, and individual ships, this created an early-warning sensor network.
The Federation has been constructing these outposts for nearly a century.
The Neutral Zone around Federation Space was established by the Border Declaration of Y102 which defined the border of the Federation as being 4750 parsecs from the center of the Primary Member Zone, an area known later as simply “the capital” (Earth, Mars, Vulcan, Alpha Centauri, Rigel, Andor).