The Eeisan system was a star system in the Rianai Sector, in the the Colonies Region of the Galaxy. It was settled by the Republic around 1500 standard years before the Ruusan Reformation. It was a prime example of a harsh industrial zone, as that was what is was meant to be. All 6 planets, 9 moons, and 2 small asteroid clusters had mining facilities or pounding factories embedded in them.