Tau Ceti system

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There is more information available on this subject at Tau Ceti system on the English Wikipedia.
Tau Ceti
Location overview



Distance from Sol:

12 light-years

Stellar overview

Spectral type:

G8.5 V

Absolute magnitude:


Orbiting planets:

At least 5

Societal overview




Tau Ceti (τ Cet / τ Ceti, pronounced /ˌtaʊ ˈsiːtaɪ/) is a star in the constellation Cetus. A yellow-orange dwarf star, it is similar to Sol in mass and spectral type. At just under 11.9 light years distant from the Sol system, it is a relatively close star. The system is surrounded by an Oort cloud.[1]

This system was inhabited by a significant Covenant presence in 2552, including the refit and repair station Unyielding Hierophant, accompanied by a massive fleet of warships prepared to attack Earth. The station was destroyed by UNSC forces September 13, 2552, including the majority of the Covenant fleet.[2]


Tau Ceti is also the setting for the first Marathon game.

List of appearances[edit]


  1. ^ Halo: First Strike, page 326
  2. ^ Halo: First Strike, "chapters 33-35"