Lya Station Alpha
From Star Trek: Theurgy Wiki
Lya Station Alpha was a Federation Orunal-class space station in service with Starfleet in the 24th century. This station orbited Lya III, the inhabited third planet in its star system. This system, in Sector 30/489, was located near the Giles Belt and the Nel Bato system.
In 2368, the USS Enterprise-D traveled to Lya Station Alpha with survivors from the attack on the Solarion IV colony. (TNG: "Ensign Ro")
Gimli Luff of Tellar spent five years of his life at Lya Station Alpha and was familiar with the systems of an Orunal-class station. This led to his selection for the infiltration mission at Starbase 84 in March of 2381.
(According to the Star Trek: Star Charts (p. 47) and the Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the Lya system was located in the Alpha Quadrant. It was a binary system of two A-class stars. Lya Station Alpha was located in this system.)