Sector 21502
Sector 21502 was a spatial region that was located somewhere in the Alpha or Beta Quadrant.
In 2367, the USS Aries was on a deep space exploration mission in this sector. The sector was mentioned in the chart "Starfleet Operations – Sectors 21166-23079" that was on display in the bridge of the USS Enterprise-D. (TNG: "Brothers" okudagram)
This sector was only mentioned in writing.}
This sector might be located in the Alpha Quadrant, near the sectors Sector 21503 and Sector 21505.