In 2151, Enterprise NX-01 detected a J'ral class supernova remnant approximately three light years off their course. (ENT: "Civilization") Sub-Commander T'Pol reported the supernova, suggesting that "J'ral class" may be a Vulcan term. According to the Star Trek: Star Charts (p. 45) and the Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the supernova remnant was located in the Beta Quadrant.