The rogue moon of Aar' iku is considered a planet only because it orbits no known planet. It is, in fact, a moon that was probably sent hurtling through space at its current course due to some unknown phenomena. Aar' iku is basically just a large ball of rock and ice, with no atmosphere, and no real purpose. There used to be some light volcanic activity on the surface, but as Aar' iku moved away from the center of this system the temperature dropped and covered the areas with layers and layers of ice and interstellar debris.

Where this rogue moon came from is a little mystery to scientists, as there is no evidence that it came from this system. The lack of any stellar debris orbiting the system's sun indicates this moon did not come from this system, but nonetheless geological surveys on the surface prove it was once a moon.

There is talk among a few scientists on putting an unmanned science station on this moon as it travels out of this system. Why the scientists would want to waste perfectly good equipment on a large ball of ice and rock isn't known, but some less honorable characters suspect it is actually a criminal plot. An unmanned science station on an interplanetary traveler isn't very profitable, but a hidden base for the pirates, far from any system where it could be observed, could be very valuable. Whatever the purpose this planet or moon has in the future, right now there is very little activity around it, and nothing at all interesting about it but its hidden past.