Sector 63
Sector 63 was a spatial region in a minor quadrant of the Alpha or Beta Quadrant. This sector's quadrant was adjacent to another minor quadrant, which contained the planet Dytallix B.
In 2364, the starships USS Horatio, USS Renegade, USS Thomas Paine, and USS Enterprise-D rendezvoused at Dytallix B. Shortly after the ships departed, the Enterprise-D picked up an unusual disturbance in this sector. The disturbance was caused by the destruction of the Horatio. (TNG: "Conspiracy")