Eudemon X49-05 is a moon in an unspecified system.
After the Human-Covenant war, a UNSC advanced pioneer group discovered it. Eudemon X49-05 has a composision quite like Earth, oxygen-rich, water-plentiful and teeming with life. However, the moon displays so much tectonic activity that there are too many potentially problematic situations. As such, the UNSC has started to assess colonization viability.