In 2366, the USS Enterprise-D was conducting a routine survey of an uninhabited star system in the Zeta Gelis cluster when they discovered an amnesic Zalkonian, who they called "John Doe" in the remains of an escape pod on a remote planet. (TNG: "Transfigurations" ) According to Star Trek: Star Charts ("United Federation of Planets II") and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the Zeta Gelis Cluster was located in the Beta Quadrant.