Priors 5d is a moon in the Priors System with a breathable atmosphere, and a harsh, polar climate.
- “The Impossibility of Reason”: The attempt to safely transport Captain Lorca out of the Priors System and to a medical facility goes wrong when a Klingon Raider fires on the Starfleet shuttle, forcing the player and the rest of the crew aboard to crash land on a nearby moon. There, the player, Cmdr. Landry and others are forced to survive harsh environmental conditions, as well as evade Klingon raiding parties searching for them, until the help arrives.
- Mirror of Discovery Dev Blog - Federation Planetary Database: Prior's World
- Priors World at Memory Alpha, the Star Trek Wiki.