Space Marine Chapter Homeworld
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A Space Marine Chapter Homeworld is an Imperial planetological classification for a world that serves as a base for a Space Marine Chapter's fortress-monastery. For some Chapters the world also serves as their sole recruiting world; other Chapters draw their recruits from several planets. A "Chapter planet" is an Astartes world which is both governed by the Chapter as a feudal possession of the Imperium of Man and which serves as the base for their fortress-monastery. Astartes homeworlds may be Imperial planets, while some are not planets at all, but take the form of orbiting spacecraft, space stations, deserted moons or asteroids. The Master of the Chapter is often also the traditional feudal ruler of the Chapter planet, in which case the Chapter Master also holds the rank of Planetary Governor and Imperial Commander. Many Astartes homeworlds are Death Worlds, Feral Worlds and Feudal Worlds, whose societies provide the best warriors. Not all Space Marine Chapters have a single homeworld; some Chapters such as the Imperial Fists, Black Templars and Blood Ravens take their Aspirants from several different worlds. Fleet-based Chapters do not possess homeworlds, and instead recruit from any convenient and promising worlds they pass near in the course of their duties. Several Space Marine Chapters guilty of crimes against the Emperor (but those still deemed redeemable by the Inquisition and the High Lords of Terra), such as the Mantis Warriors and Executioners, have been forced to forfeit their homeworlds - which requires them to become completely Fleet-based Chapters.
Selected List of Adeptus Astartes Homeworlds
| Planet Name | Segmentum | Sector | Subsector | System | Population | Space Marine Legion or Chapter |
| Armato | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Sons of Orar |
| Baal | Ultima Segmentum | Unknown | Unknown | Unknown | 122,000 | Blood Angels |
| Badab Primaris | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Astral Claws |
| Banish | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Exorcists |
| Barbarus | Unknown | Unknown | Unknown | Unknown | Unknown | Death Guard |
| Bellicas | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Emperor's Swords |
| Black Planet | Unknown | Unknown | Unknown | Unknown | Unknown | Harbingers |
| Bloodfall | Segmentum Solar | Unknown | Unknown | Unknown | Unknown | Red Wolves |
| Brycantia | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Iron Knights |
| Caliban (Destroyed) | Segmentum Obscurus | Unknown | Unknown | Caliban System | N/A | Dark Angels |
| Chemos (Destroyed) | Unknown | Unknown | Unknown | Chemos System | N/A | Emperor's Children |
| Colchis (Destroyed) | Unknown | Unknown | Unknown | Unknown | Unknown | Word Bearers |
| Coralax | Outside Imperial Territory | Unknown | Unknown | Unknown | Unknown | Knights of the Raven |
| Cretacia | Unknown | Unknown | Unknown | Unknown | Unknown | Flesh Tearers |
| Cthonia (Destroyed) | Segmentum Solar | Unknown | Unknown | Cthonia System | Unknown | Black Legion (Sons of Horus) |
| Darkhold | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Dark Sons |
| Deliverance | Segmentum Tempestus | Unknown | Unknown | Unknown | Unknown | Raven Guard |
| Draconith | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Star Dragons |
| Elusia Prime | Beyond Imperial Territory | Unknown | Unknown | Unknown | Unknown | Doom Legion |
| Erenon | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Celestial Guard |
| Erwynn's World | Beyond Imperial Territory | Unknown | Unknown | Unknown | Unknown | Dragon Lords (All Contact Lost) |
| Eyrie | Segmentum Solar | Unknown | Unknown | Unknown | Unknown | Storm Wings |
| Felis | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | White Panthers |
| Fenris | Segmentum Obscurus/Segmentum Solar | Unknown | Unknown | Fenris System | Unknown | Space Wolves |
| Firestorm | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Aurora Chapter |
| Fortress | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Crimson Paladins |
| Honourum | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Novamarines |
| Icefang | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Tigers Argent |
| Ingiga | Segmentum Solar | Unknown | Unknown | Unknown | Unknown | Angels of Fury |
| Ithaka | Unknown | Unknown | Unknown | Unknown | Unknown | Iron Snakes |
| Jaggafall | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Blood Swords |
| Keletros | Segmentum Solar | Unknown | Unknown | Unknown | Unknown | Skull Bearers |
| Kiavahr | Segmentum Tempestus | Unknown | Unknown | Unknown | Unknown | Raven Guard (Fortress-Monastery located on the moon of Kiavahr) |
| Macragge | Ultima Segmentum | Unknown | Ultramar | Macragge System | 400,000,000 | Ultramarines |
| Mancora | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Howling Griffons |
| Medusa | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Iron Hands |
| Mundus Planus (Chogoris) | Ultima Segmentum | Unknown | Unknown | Unknown | 10,000,000 | White Scars |
| Mundus Pyra | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Fire Lords |
| Necris | Outside Imperial Territory | Unknown | Unknown | Unknown | Unknown | Marines Exemplar |
| Neutra | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Relictors (Excommunicate Traitoris) |
| Newfound | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Genesis Chapter |
| Nihilas | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Death Strike |
| Nocturne | Ultima Segmentum | Unknown | Unknown | Unknown | 15,000,000 | Salamanders |
| Nostramo (Destroyed) | Unknown | Unknown | Unknown | Unknown | N/A | Night Lords |
| Obsidia | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Sable Swords |
| Occludus | Outside Imperial Territory | Unknown | Unknown | Unknown | Unknown | Death Spectres |
| Ogyrs | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Invaders |
| Olympia (Destroyed) | Unknown | Unknown | Unknown | Unknown | Unknown | Iron Warriors |
| Outrenacht | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Legion of Night |
| Oxatan | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Red Legion |
| Paragon | Segmentum Solar | Unknown | Unknown | Unknown | Unknown | Emperor's Hands |
| Pervigilium | Unknown | Unknown | Unknown | Unknown | Unknown | Angels of Vigilance |
| Phobian | Segmentum Tempestus | Unknown | Unknown | Unknown | Unknown | Dark Hunters |
| Posul (Destroyed) | Segmentum Tempestus | Unknown | Unknown | Unknown | N/A | Mortifactors |
| Pranagar | Segmentum Tempestus | Unknown | Unknown | Unknown | Unknown | Sky Sentinels |
| Preyspire | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Hawk Lords |
| Prism | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Records Deleted |
| Prospero (Destroyed) | Ultima Segmentum | Prospero Sector | Prospero Subsector | Prospero System | N/A | Thousand Sons |
| Raikan | Segmentum Tempestus | Unknown | Unknown | Unknown | Unknown | Red Talons |
| Rynn's World | Ultima Segmentum | Loki Sector | Unknown | Rynnstar System | Unknown | Crimson Fists |
| Sabatine | Segmentum Pacificus | Unknown | Unknown | Unknown | Unknown | White Consuls |
| Sacris | Segmentum Obscurus | Calixis Sector | Drusus Marches | Unknown | Unknown | Storm Wardens |
| Sanctum | Segmentum Solar | Unknown | Unknown | Unknown | Unknown | White Templars |
| Scelus | Segmentum Obscurus | Cadian Sector | Unknown | Unknown | Unknown | Sons of Malice (Excommunicate Traitoris) |
| Silence | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Night Watch |
| Sternac | Outside Imperial Territory | Unknown | Unknown | Unknown | Unknown | Iron Lords |
| Talasa Prime | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Deathwatch |
| Talon | Ultima Segmentum | Holdur Sector | Unknown | Unknown | Unknown | Storm Falcons |
| Talus IV | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Brazen Claws |
| Terra | Segmentum Solar | Sector Solar | Subsector Sol | Sol System | Very High | Imperial Fists |
| Titan | Segmentum Solar | Sector Solar | Subsector Sol | Sol System | Unknown | Grey Knights |
| Torva Minoris | Segmentum Obscurus | Unknown | Unknown | Torva System (Located in the Eye of Terror) | Unknown | Relictors (Excommunicate Traitoris) |
| Varsavia | Ultima Segmentum | Unknown | Unknown | Unknown | Unknown | Silver Skulls |
| Xenax | Segmentum Solar | Unknown | Unknown | Unknown | Unknown | Subjugators |
| Zaebus Minoris | Segmentum Tempestus | Unknown | Unknown | Unknown | Unknown | Red Scorpions |
| Zephyr | Segmentum Obscurus | Unknown | Unknown | Unknown | Unknown | Storm Hawks |
Sources
- Codex: Space Marines (5th Edition)
- Codex: Tyranids (5th Edition), p. 28
- Warhammer 40,000 Rulebook (5th Edition)
- Imperial Armour Volume Four - The Anphelion Project, pp. 121-129
- Imperial Armour Volume Nine - The Badab War - Part One, p.7
- The Flight of the Eisenstein (Novel) by James Swallow
- A Thousand Sons (Novel) by Graham McNeill
- Prospero Burns (Novel) by Dan Abnett
- Rynn's World (Novel) by Steve Parker