Epsilon Eridani system

Not to be confused with Eridanus System The Epsilon Eridani System is 10.5 light years from Earth and is in FLEETCOM Sector One. It is home to several habitable planets, and until 2552 the most notable was Reach. At 10.5 light years from the Sol System, it is one of the closest neighbors of humanity's homeworld.

Humans held the system for several hundred years, until the Battle of Reach in 2552. After that, the system came under control of the Covenant. It was home to many of the UNSC's strongholds and military bases, such as Reach.

Stats
Coordinates: 3h 32m 55.8s RA, --9° 27' 29.7" Declination

Distance: 10.5 light years from earth

Star: K2V orange-red dwarf

Number of planets: At least 6

Colonies
Epsilon Eridani is home to several planets, with at least three of them known to be inhabited;
 * Epsilon Eridani B - a gas giant discovered in 2000. Likely renamed after system colonization.
 * Epsilon Eridani IV - known to be the site of an Insurrection.
 * Reach - the former military center of the UNSC, and the most developed UNSC colony. Glassed by the Fleet of Particular Justice in 2552.
 * Circumstance - famous for its universities and courts of justice. Status unknown.
 * Tribute - a recently set up colony, known for its industrial capacity. Status unknown.
 * Beta Gabriel - Unknown whether it has been colonized.

Real Life
Scientific observation has deduced the presence of an inner rocky asteroid belt, an outer icy belt, and at least three planets: a gas giant the size of Jupiter, and possibly two terrestrial planets, near the inner and outer belts, respectively.