Eridanus II
From Halopedia, the Halo wiki
Summary
Planet in the Eridanus Star System. A UNSC colony world, Little has been revealed about this planet, but it is the location of Elysium City, where John-117 grew up until he was abducted and sent into the Spartan program in 2514. He later returned there in 2525 with the other Spartans aboard the frigate UNSC Pioneer to board the cargo freighter Laden and travel to a rebel base. They boarded this vessel in the Eridanus II Space docks. The Spartans later returned to the system in 2552 aboard the captured Covenant flagship Ascendant Justice, returning to the Rebel base.
