USS Callisto

Gamma Argus system in a Starfleet Command order

Gamma Argus system was an inhabited planetary system.

The Federation starships USS Callisto, USS Enterprise-D, and USS Mustang were ordered to this system in 2364. These starships conducted a survey of the cultural evolution of the inhabitants of Gamma Argus II and, if desirable, make first contact with them. (TNG: "Conspiracy", okudagram)

This star system was only mentioned in writing.