Althosian system

The Althosian system was a solar system with Seven Planets and two suns. Six of the seven planets were inhabited; the last "planet" was actually an artificial construction and was not inhabited. Hunters lived around the Althosian system, where they were attracted to the seventh planet.

The Seven Planets were originally Earth colonies, but they declared independence in 2396. They were all destroyed in 2400.

The planets include Nicaea, Trieste, Cosgon and a large, unnamed planet.

Nicaea
Nicaea, capital of the Seven Planets, was governed by the Academy. The Academy was based on the Greek philosophical kings, with the most intelligent people leading the Seven Planets. The Academy was led by the Archon.

Trieste
Trieste was the home world of the Kython, an oppressed native species.

Cosgon
Cosgon was known to be icy and cold.

Unnamed artificial planet
The unnamed planet was actually an artificial construction by Kopyion Liall a Mahajetsu to keep the Yssgaroth trapped. (NA: The Pit)