Chi Ceti system

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Chi Ceti, as seen from Earth

The Chi Ceti System is a planetary system located in the far reaches of UNSC-controlled space, approximately 80 light years from Earth. It was home to the planet Chi Ceti IV, which housed the Damascus Testing Facility where the MJOLNIR Powered Assault Armor was first created.[1]


Main article: Battle of Chi Ceti

In 2525, the Battle of Chi Ceti was fought here between the UNSC Commonwealth and the Covenant light cruiser Unrelenting. The facility on Chi Ceti IV was evacuated shortly thereafter, along with the MJOLNIR armor.[2] In this battle, the Spartans successfully destroyed the Covenant ship, though Samuel-034 died in the process.[3]

It would appear that the planet was again used for research, as the MJOLNIR Powered Assault Armor/EOD variant was developed at X Ceti 4.

The colony was one of the first eight to be destroyed by the Covenant, being destroyed sometime in the first four years of the Human-Covenant War.


  • Chi Ceti (aka 53 Ceti) is an actual star system approximately 80 light years from Earth.

List of appearances[edit]


  1. ^ Halo: The Fall of Reach, page 102
  2. ^ Halo: The Fall of Reach, page 119
  3. ^ Halo: The Fall of Reach, page 130