Athabasca

Armitage (or Iota Hydri IV) is a planet settled by humanity as one of the Inner Colonies. It is the fourth planet in orbit around its star and is the largest of the system's terrestrial worlds.

Armitage is categorized as an Inner Colony, though it rests along the abstract boundary with the Outer Colonies, and is under the administrative control of the Unified Earth Government. Beginning as a mining and agriculturally-focused colony, Armitage eventually metamorphosed into a minor fortress world with numerous military installations and a considerable garrison, a change made due to the threat of colonial war in the late 25th and early 26th centuries. During the Human-Covenant War, the planet was a component of the Cole Line and experienced major invasions on two separate occasions: once in 2535, and again in 2542.