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Procyon system

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There is more information available on this subject at Procyon system on the English Wikipedia.
Position Alpha Cmi.png
Location overview


Canis Minor

Distance from Sol:

11.46 light-years

Stellar overview

Spectral type:


Absolute magnitude:


Orbiting planets:

At least 4

Societal overview


Unified Earth Government


The Procyon system, (pronounced /'proʊsɪən/) also referred to as α CMi or Alpha Canis Minoris, is a binary star system situated 11.46 light years from the Sol system. The system consists of a white main sequence star of spectral type F5 IV-V, named Procyon A, and a faint white dwarf companion of spectral type DA, named Procyon B.

Its closest neighbor is Luyten's star, 1.11 ly away.[1] It is situated five days Slipspace travel from the Epsilon Indi system.[2] Arcadia, a human Outer Colony world is located in this system. Procyon is orbited by at least four planets.[3]


In 2429, the fourth planet orbiting Procyon, Arcadia, was colonized by the Unified Earth Government, becoming a human colony known for its recreational amenities. Arcadia was invaded by the Covenant in 2531. The system's defense fleet engaged the Covenant ships, suffering heavy casualties.[2] However, the Covenant left the system soon after without glassing the planet. A small number of human colonists remained on the planet in the town of Abaskun. It would remain a mostly lawless region, but continued to supply the UNSC with food. The Covenant would return to Arcadia later in 2549, glassing it.[4]


  • Arcadia - a human colony glassed by the Covenant.
  • Laconia - uninhabited.

List of appearances[edit]