From Halopedia, the Halo wiki
During the beginning stages of the Great Schism in early November 2552, the Jiralhanae's Alpha leadership was lured to Joyous Exultation under pretense of truce negotiations - actually a Sangheili ambush to eradicate the Jiralhanae leadership. However, the planet was devastated by a UNSC NOVA bomb before the ambush could be sprung.
List of appearances
- Halo: Ghosts of Onyx (First mentioned)
- Halo: Ghosts of Onyx, page 242