Segmentum Pacificus

The Segmentum Pacificus is the region of Imperial space that lies to the galactic west of Terra. This Segmentum would come under the administration of Tenzin and the Monastic Ascendants, and then become a core piece of the Separatists' domains.

Notable World

 * Mycenae (Feudal World) - Mycenae is the homeworld of Hectarion Mycenor, main recruiting world of the Crimson Lions and the capital of the Dominion.
 * Ganden - Ganden is the homeworld of Tenzin and main recruiting world of the Monastic Ascendants.
 * Stygies VIII (Forge World)
 * Artemia Majoris (Forge World)
 * Urdesh (Forge World) - Urdesh is a major Forge World within Segmentum Pacificus that joined the Traitors.
 * Colchis (Feudal World)
 * Kallastin (Hive World) - A Hive World known for its high number of Ogryns, and so it became the first recruiting world of the Kallastin Ogryn Auxilia.
 * Vasalius (Death World) - A radiation blasted, barren wasteland devoid of life as a result of a cataclysmic event known as the "Razing" that happened just over two hundred years previously. Main recruiting world of the Vasalius Terra Heredes regiments of the Imperial Army.
 * Atar-Median (Forge World) - Atar-Median is a Forge World that during the Halcyon Age developed ties with the Obsidian Guard Legion, leaving it surrounded when the Separatists declare separation from the Imperium.
 * Xana II (Forge World) - Xana II is a Renegade Forge World that allied itself with the Riven.

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