From Halopedia, the Halo wiki
The Geryon sector is a sector of the Unified Earth Government. On December 17, 2553, Sahara-class heavy prowler UNSC Silent Joe arrived at a rendezvous point in deep space within the Geryon sector, after departing from the Hestia system.
List of appearances
- Halo: Retribution (First appearance)
- Halo: Retribution, page 282 (Google Play edition)