Joc-Duloc was a Class N planet believed to be located somewhere in the Oralian sector. (Star Trek: Pioneer) The planet's alleged surface was barren and rocky. A highly charged atmosphere causes the planet to experience severe storms and constant lightning strikes. Due to volcanic activity, the planet also has rivers of lava throughout the surface. From descriptions in legends, some scholars claim that the planet should be labeled and class Y planet, but a classification of N fits more with Calok's description of the surface's atmosphere.