Sector 052 on a mission order
Sector 52 was a region of space. This sector contained a partial segment of the Romulan Neutral Zone, which was located in section 32.
In 2364, the Federation starships USS Tranquillity Base, USS Non Sequitur, and USS Max Plank were ordered by Starfleet Command to increase their sensor drone surveillance in this sector. (TNG: "Conspiracy", display graphic)