Columbia has no livable planets. Its worlds are all terrestrial and rocky, and classified in extreme temperature ranges: volcanic hothouses or frigid ice wastelands. Apart from a turian telescopic array on Gromar and a Cerberus base on Nepheron, no other organization bothered to exploit the identified resources of the system.

Clojiia

Clojiia is the first planet orbiting the star Columbia.

Main article: Clojiia

Gromar

Gromar is the fourth planet orbiting the star Columbia.

Main article: Gromar

• Collection: UNC: Locate Signs of Battle: League of One Medallion ×1

Nepheron

Nepheron is the second planet orbiting the star Columbia.

Main article: Nepheron

• Assignment: UNC: Hades' Dogs
• Collection: UNC: Locate Signs of Battle: Salarian ID Tag ×1
• Survey: UNC: Valuable Minerals: Heavy Metal ×1 / Light Metal ×1 / Rare Element ×1

Ontaheter

Ontaheter is the third planet orbiting the star Columbia.

Main article: Ontaheter

• Survey: UNC: Valuable Minerals: Rare Element ×1

Trivia

• All of the systems in the Voyager Cluster are named after rivers. Columbia is probably named for the Columbia River.