Fate 40k: Pandora Expanse
The Icarus System is largely barren of usable resources. Its primary purpose is to serve as the penitent chapter homeworld of the Spirit Dragons. Sent into penance-in-exile to guard Pandora’s Door, and the Pandora Expanse in general, the Spirit Dragons were to set up the new home of their Chapter on the Icarus Monastery a planetoid that tumbles through the Icarus system in a highly elliptical orbit. The orbit brings the Monastery between 0.5 AU and 3 AU of the star, causing its surface temperature to fluctuate hundreds of degrees.