Alcor system
The Alcor system was an inhabited star system with at least four planets, including Alcor IV. The system was known to Starfleet at least by the 23rd century, although it wasn't yet colonized until the far future.

The Alcor system was a long distance from the location at which the  was abandoned for nearly a millenium. The distance was such that crossing it in a Class C shuttlecraft was theoretically possible but a stretch. ()

External links 
 
 

Star systems