Arcadia

Arcadia is a United Nations Space Command colony located in the Procyon System. A "tropical paradise", it was a popular destination for tourists and received many shipments from Harvest. However, it became a site of conflict in 2531, caught up in the Human-Covenant War, of great interest to the latter.

Trivia

 * It may have been named after the actual Arcadia, a region south of Greece in the Peloponnesus.
 * The Pillar of Autumn was already at Arcadia when the Spirit of Fire came to the planet's aid.