Planet Statistics
Star, position:

Urs (primary), Fied, Joori, IV


Suban and Qikost


1.375 G


.9atm (N2, O2, Ar)


8.132 billion



Societal Approximation:



Independent City States

Technology Tier:

Tier 2

Current Threat To Array:

Significant to Serious

"Things look different now, without the Prophets' lies clouding my vision. I would like to see our own world, to know that it is safe."
"Fear not, for we have made it so."
"By your word, Arbiter."
"Take us home."
— Rtas 'Vadum and Thel 'Vadam

Sanghelios is the homeworld of the Sangheili  race. Sanghelios is the fourth planet in a Triple Star System of stars Urs, Fied, and Joori. The planet has two moons called Qikost and Suban. Many Forerunner artifacts and structures exist on the planet, which are the topic of worship, as well as the cause of historical wars between the Sangheili and the San 'Shyuum before the formation of the Covenant.


Sanghelios has a gravity of 1.375 Gs, and an average surface temperature of -5C to 56C (23F to 132.8F). Sanghelios is inhabited by approximately 8.132 billion Sangheili. The Bestiarum indicates that Sanghelios is similar to Earth in shape and proportion, though the land masses are more scattered in relation to bodies of water. Like Earth, its atmosphere consists of oxygen, carbon dioxide, and nitrogen, but also has a reddish hue to it, perhaps indicating large amounts of iron or new rock being made by the core.

Being a homeworld, the planet is home to a huge number of civilian Sangheili numbering over eight billion, as well as a large defense force. Sanghelios was possibly an area of heavy conflict between Separatist and Loyalist forces.

It is also possible that the Sangheili population centers on the planet are all city-states.


  • Yermo
    • State of Vadam
      • Vadam Keep
      • Vadam Harbor
      • Kolaar Mountain
    • State of Mdama
    • Iruiru

Given that Sangheili are named after the region they are from, which is in turn named after its founder, there are a number of possible states, currently totaling more than thirty: 

Theoretical Sanghelios States

Ahrmonro • Crolun • Chavam • Fulsam • Ikaporam • Inanrar • Jeqkogo • Kasam • Konar • Losona • Mantakr • Moram • Mortum • Nbek • Nosol • Ontom • Pewtruno • Putum • Qualom • Refum • Rolam • Sraom • Sumai • Taham • Umam • Vadam • Vadum • Wamik • Wattinr • Zamam • Zule