Hive-Moon Sigma

Hive-Moon Sigma is a hive-moon orbiting Ceti Albus. No segmentum, sector, or coordinates are recorded for it. Mine-cities are delved into its rock, and its hive extended several kilometres beneath the surface.

In 405.M41, during the Macharian Heresy, it was the site of a rebellion suppressed by Dark Angels of the 8th Company under Captain Elijah, including the later Interrogator-Chaplain Asmodai. The Fallen Malvine Rhemell led the rising and escaped after setting the moon’s plasma generators to overload.