Aurus Subsector

The Aurus Sub-sector is the Ultima administrative cube that holds the Ryza System, the plasma forge second only to Mars in some Mechanicus boasts. Flyberia, Proctus Prime, and Ulani IV share the neighbourhood.

Ryza's plasma lore, Titan support, and every later siege of the forge spill into these neighbour rocks. The sub-sector exists so the forge is not a floating label.

The Aurus Sub-sector still matters as Ryza's paperwork, not as a synonym for one forge. Unofficial maps keep the Ultima parent and leave Ryza a child of ryza-system.