Jestefad, a massive gas giant planet, resided within the Atravis sector of the Outer Rim Territories' Western Reaches. Its location was specifically in the Mustafar system, designated as grid square L-19 on the Standard Galactic Grid. Orbiting closely to its smaller twin, Mustafar, Jestefad's powerful gravitational pull exerted immense tidal forces on the volcanic planet. The large electromagnetic field of Jestefad enveloped the smaller volcanic planet, generating intense electrical storms and constantly attempting to capture Mustafar as its moon through its gravitational influence. Nevertheless, the influence of another, more distant gas giant named Lefrani counteracted this, pulling Mustafar away from Jestefad. This interaction resulted in Mustafar becoming an unstable world composed of magma and rock. Jestefad itself possessed a moon, the ocean moon known as Nur.
Millennia in the past, a cataclysmic conflict between the Jedi and Sith caused Jestefad and Lefrani to be displaced from their orbits around the star Priate. Consequently, both gas giants were positioned near Mustafar, creating a gravitational tug-of-war that left the smaller planet suspended between them.
Jestefad made its debut in the prequel trilogy film, Star Wars: Episode III Revenge of the Sith, which premiered on May 19, 2005. Its formal identification within new Star Wars canon occurred in the seventeeth edition of the Star Wars: Build the Millennium Falcon magazine, released around April 29, 2015. In Star Wars Legends, Jestefad was initially identified within Star Wars: Complete Locations, a reference book authored by Dorling Kindersley and published on October 17, 2005.
Star Wars Inside Intel: The Inquisitorius initially indicated that Nur orbited Mustafar. However, this information was subsequently revised in 2023 to state more broadly that it was part of the Mustafar system. Later that year, Star Wars: Dawn of Rebellion: The Visual Guide reiterated that Nur orbited Mustafar. Conversely, the Star Wars: Tales of the Empire episode "Devoted" portrays Nur orbiting Jestefad, with Mustafar visible in the distance. A hologram featured in "Part IV" of Obi-Wan Kenobi supports this, displaying Nur's orbit around a planet that is not Mustafar.