According to a Pyromancer theory that could be elune , it was based on the fact that it's surface is the same as the platform where you fight the sisters of the moon in ToS AND also the same as the planet that you can see from Elunaria , the planet where we rescue Eonar.
IF indeed it's the same planet it could be the "Victory that went unnoticed" mentioned by Ogmot in his diary ...The star augur predicted it , it happened but we didn't notice (the fact that is a background detail ).