Igrathi is a gas giant located in the Kilrah system. It orbits roughly one hundred million kilometers from the planet Kilrah. Its atmosphere is composed of frozen ammonia and sulphur. Until the First Battle of Kilrah there was a space station orbiting the planet, which was destroyed by TCS Intrepid and TCS Kagimasha during the battle.
Strike Force Valkyrie took refuge in Igrathi's upper atmosphere for 30 hours during the battle in order to effect repairs.