Defense Outpost 573 was a Federation outpost, an R1 Invictus-class defense outpost space station.
History and specifications[]
In Starfleet service in the later 23rd century, this defense station was located on the frontier towards the galaxy's rim.
By the 2280s decade, this base had been destroyed. (FASA RPG module: Regula-1 Orbital Station Deckplans)