Janjur Qom (Earth-5875)

Janjur Qom was the third planet of an unknown star system and the homeworld of the san'shyuum. It was orbited by one natural satellite, Plaon.

Prehistory
The san'shyuum evolved in Janjur Qom, and were visited by the forerunners in the past, who left numerous artifacts on the planet. During the Forerunner-Xenomorph War, the Librarian and the Lifeworkers visited Janjur Qom as a part of the Conservation Measure to save san'shyuum specimens for the Ecumene, and index them in the Ark so they could survive the activation of the Halo Array. After the rings were lighted and all life extinct, the san'shyuum, alongside all remaining living species in the galaxy, were returned to their homeworld via Keyships, where they started rebuilding their culture. The last of the species to be reintroduced to their homeworld, the san'shyuum's Keyship, known as the Dreadnought, was taken over by a fragment of Mendicant Bias, and instead of returning to the Ark, crash-landed on the Great Apothtea, on Janjur Qom.

War of Wills
In their ancient past, the san'shyuum came to revere the forerunners as gods on their homeplanet Janjur Qom duo to the numerous artifacts they found. However, the populations became divided on how to deal with these items, and as such were divided in two factions, the Stoics and the Reformists. While the Stoics believed that the san'shyuum were not allowed to touch or tamper with forerunner artifacts, as they were "above them", the Reformists had more progressive views, and believed they should manipulate the technology to improve their species' lives.

The Stoics prohibited any access to the Dreadnought, which the Reformists wanted to study, until 2200 BCE, where the War of Wills was declared. The san'shyuum fought for the next one hundred years, with the war ending in 2100 BCE, when one thousand Reformists were able to take control of the Dreadnought and leave Janjur Qom, taking a massive chunk of the planet's surface alongside it. The Reformists became the ancestors to the san'shyuum who would make first contact with the huragok and the sangheili, as well as the founders of the Covenant, while the Stoics became stranded on Janjur Qom as the planet's dominant civilization.

It was later claimed by the san'shyuum to the rest of the Covenant that Janjur Qom was destroyed when its star went supernova in 648 BCE, although the validity of this statement was secretly questioned by many sangheili.