Coradyne IV has one moon, Coralune. It is one of the most naturally similar worlds to the Homar evolutionary home, Eprise, making it a highly successful colony. Coradyne IV was the second world to be colonised by Homar settlers. It later formed the head of the Six Worlds Rebellion against the Eprise Alliance, going on to become head of the Six Worlds Republic. This in turn became the Homar Imperium, which Planet Coradyne remains the core of.