The station orbited Reach during the Fall of Reach in August 2552. During Operation: UPPER CUT, the station was used by SPARTAN-B312 and Jorge-052 to arm a slipspace drive as an improvised bomb against Long Night of Solace. After Long Night of Solace was destroyed by the bomb, another Covenant fleet arrived near Anchor 9. The station was likely destroyed shortly after its arrival.
It had multiple hangar bays with several YSS-1000 Sabre fighters stored inside. In addition each of it's three main structures, had docking umbilicals for larger vessels such as frigates. The station was surrounded by frigate repair facilities which had several half-built ships in and around them.
- Anchor 9 also resembles the UNSC Hopeful, a mobile hospital platform and research facility.
- Anchor 9 is the setting of a multiplayer map of the same name.
- The top half of the station resembles the number 117.
- Halo: Reach (First appearance)