Canon

Substance

From Halopedia, the Halo wiki

Substance
Coelest.jpg
Substance and Installation 05. Distances are not to scale.
Astrographical

System:

Coelest system[1][2]

Orbiting:

Coelest[1]

Orbital position:

Fourth planet[1]

Moon(s):

Opusculus[3][2]

Physical

Diameter:

82,749 kilometers (51,418 mi)[1]

Atmosphere:

Gas
hydrogen, helium, methane[1]
Liquid
ammonia, water[1]
 

Substance, also referred to as Coelest IV,[4] is a blue-white ice giant in the Coelest system.[2][1] It is the fourth planet in the system and is the planet which Installation 05 orbits.[1][2] Substance is orbited by eight satellites, only one of which, Opusculus, is a natural moon. The rest include Installation 05, and six dormant Forerunner facilities on predetermined orbital paths.[2][1] An asteroid field is located close to Substance at 2.4 AU from Coelest.[5] Unlike on Installation 04, where its parent planet Threshold could be seen quite clearly, especially at night[6] on Installation 05, Substance is very difficult to see in the sky of Installation 05; this is due to the Delta Halo's stormy weather conditions caused by a Flood outbreak that occurred some two centuries before the Battle of Installation 05.[1] During the Great Schism that began on Installation 05, Sangheili and Jiralhanae vessels battled each other over Substance.[7]

Weeks after the battle and the subsequent Fall of High Charity, the UNSC Coral Sea picked up a dying San'Shyuum aboard a skiff drifting in a debris field irregularly orbiting Substance.[4]

Trivia[edit]

Gallery[edit]

Halo 2[edit]

Halo 2: Anniversary[edit]

List of appearances[edit]

Sources[edit]

  1. ^ a b c d e f g h i j k Halo: The Essential Visual Guide, page 190
  2. ^ a b c d e Halo Encyclopedia (2022 edition), page 346
  3. ^ Halo: The Essential Visual Guide, page 46
  4. ^ a b Halo Legendary Crate, Data Drop #8
  5. ^ Halo: Ghosts of Onyx, chapter 22: "'Durruno,' Commander Lash said, 'move us dead slow into that asteroid field, at two point four AU.'"
  6. ^ Halo: Combat Evolved, campaign level The Truth and Reconciliation
  7. ^ Halo: Ghosts of Onyx, chapter 22
  8. ^ halo.bungie.org, Re: Halo Wikipedia entry improvement questions (Retrieved on Oct 15, 2007) [archive]
  9. ^ Halo Encyclopedia (2009 edition), page 185