Plaon

Plaon was the lone natural satellite of Janjur Qom, the San'Shyuum homeworld in the Qom Yaekesh system. Old, small, and cratered, the moon cast a silver light on the planet at night.

History
Plaon was an ancient San'Shyuum colony settled in their first great space-faring civilization. After the defeat of the San'Shyuum alliance with ancient humanity at the hands of the Forerunners, the San'Shyuum were exiled to their home system though the Forerunners permitted them to travel to colonies on Plaon, along with the colonies on another planet in the system and its moons.

Minerals from Plaon were used to power the "strident shield" of High Charity, forming a powerful shielding system called "Plaon's Gaze". The lunar week based on Plaon's orbit around Janjur Qom defined the artificial luminous cycles of High Charity and ultimately informed the Covenant's daily cycles of worship, labor, and rest. Covenant annals recorded Janjur Qom and Plaon as destroyed when their star collapsed in on itself in 648 BCE, though many question the truthfulness of this claim and believe it to be a San'Shyuum lie.

List of appearances

 * Halo: Cryptum
 * Halo: Broken Circle
 * Halo Mythos