Alvacorn Major

Alvacorn Major was a binary star system which was located somewhere in the Alpha or Beta Quadrant.

In 2365, the Federation starships USS Enterprise-D and USS Repulse rendezvoused in this system. During this rendezvous, the Repulse transferred Doctor Katherine Pulaski to the Enterprise-D. (TNG: "The Child")

The name Alvacorn Major originated from the source's script. The script also specified that was a binary system. [1]