Ultima Segmentum
76 records · 72 planets · 2 moons · 2 stations
What the archive holds here
11 forge worlds · 10 dead worlds · 10 desert worlds · 8 temperate worlds · 6 fortress worlds · 6 shrine worlds · 5 agri worlds · 4 death worlds · 3 daemon worlds · 3 feral worlds · 3 hive worlds · 3 ice worlds · 2 ocean worlds · 2 stations
Present by era: 28 The Horus Heresy · 16 Age of the Imperium · 68 The 41st Millennium · 55 Era Indomitus
Warp features inside this boundary: The Maelstrom · The Hadex Anomaly
Cartographer's note
By far the largest segmentum: everything east of Solar, containing the galactic core, the Maelstrom, Ultramar and the vast Eastern Fringe.
Records
I · Prime records (8)
- Blood Angels homeworld
- Subterranean world; the Underworld War
- Death world; jungle
- Dead world; interdicted
- Dead world; interdicted
- Capital of Ultramar
- Salamanders homeworld
- Dead world
II · Major records (19)
- Homeworld of Fulgrim and the III Legion
- White Scars homeworld
- Dead world
- Ork world; Operation Thunderstorm, 998.M41
- Garden of Ultramar
- Hive world; broke Hive Fleet Kraken
- Knight world; the Emperor's hidden warp gate
- Red Corsairs homeworld
- Destroyed
- Dead world
- Homeworld of Perturabo and the IV Legion; put down by its own Legion
- Crimson Fists homeworld; an agri world until Snagrod’s invasion in 989.M41
- Forge world under permanent siege
- Quarantined world
- Crownworld and gallery
- The Planet of the Sorcerers
- Consumed; a dead world stripped to the rock
- Ocean world of Ultramar
- Deathwatch watch fortress
III · Minor records (49)
- Forge world
- Tidally locked civilised world
- Feral ocean world
- T'au desert world, and the making of a commander
- Ultramar's war school
- Blood Angels recruiting moon
- The Badab War
- Imperial colony world on the Eastern Fringe
- Lost Forge World returned from the warp, held by the Dark Mechanicus
- Ork war; the White Scars' long detour
- Cemetery world, the Mausoleum Valorum; Word Bearers invasion
- T'au sept world across the Gulf
- Deathwatch watch fortress
- Necron tomb world
- Frozen former agri world in revolt; Ork invasion
- Forge world; siege engines for Terra
- Necron crownworld in revolt
- Imperial mining world overrun by the Orks of Warboss Killzkar, 926.M41
- Remote, sunless Imperial hive world
- Cardinal world of Ultramar
- Sautekh tomb world of Nemesor Zahndrekh
- Contested agri world on the T'au frontier
- Ecclesiarchy Cardinal World of temples and reliquaries; battlefield of the Promethean War in 980.M41
- Storm-wracked, and being eaten
- Agri world; staging point for the Nemesis assassins
- Ork world; seat of the Battle of Krongar, Psychic Awakening
- Daemon world of Tzeentch, unmade in early M42
- Compliance of the Laer; where the III Legion turned
- The Hollow Worlds
- Death Spectres homeworld
- Adeptus Astartes homeworld, reduced to ruins in late M41
- Ultramar's training world
- Industrial and mining world; tomb world beneath
- Sparsely inhabited plateau world
- Civilised world
- Salamanders fortress-monastery
- Death world
- Industrial world, and a daemon prince's fief
- Fortress-convent, and the first Necron contact
- Forge world taken by the Word Bearers, then liberated by the Blood Angels
- Imperial agri world on the Eastern Fringe, threatened by a tendril of Hive Fleet Gorgon
- Frontier world of Ultramar
- Agri world; broken by Hive Fleet Leviathan
- Forge world
- Carrion world
- Wolfspear homeworld, watching the Pit of Raukos
- Ice world, and a recruiting ground
- Last shrine world of the Golden Chain still holding
- Held by the Death Guard; lost to the Imperium for over a decade
Elsewhere