Starbase 585 was a Federation starbase in Starfleet service in the 24th century, located somewhere in the galaxy's Alpha or Beta Quadrant.
History and specifics[]
In the year 2375, a Starfleet Intelligence group headed by Commander Hrevet was en route to Starbase 585 on board the starship USS da Vinci. They were diverted instead to the planet Lamenda Prime. (SCE - Tales of the Dominion War short story: "Field Expediency")