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Admin·New Post·Service Status
Powered by Cloudflare·04.11.26
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Interactive Warhammer 40k Galaxy Map

Original article
cartographia40k.com|114 points|38 comments|by gbxyz|Aug 28, 2026

🌌 Cartographia Imperialis: An Interactive Guide to the 40k Galaxy

Welcome to the Cartographia Imperialis, a comprehensive digital atlas designed to track the shifting borders of the Imperium and the encroaching darkness of the void.

Communication Channel: For inquiries or reports, contact the Mechanicus at samigashi@protonmail.com. Support the Archive to ensure the continued preservation of these records.


🛠️ Interface Controls & Navigation

The map utilizes a series of toggles to filter temporal and spatial data. The transition of the galaxy is marked by the shift from the 41st Millennium to the 42nd: Era Transition: M41→Great RiftM42\text{Era Transition: } M41 \xrightarrow{\text{Great Rift}} M42Era Transition: M41Great Rift​M42

  • M41 Pre-Rift (Historical View)
  • M42 Indomitus Routes (Current Logistics)
  • Labels (Toggle Nomenclature)
  • Rift Overlay (Warp Instability Visuals)
  • Bake (Render Settings)
  • Reset (Restore Default View)

Galaxy Map Placeholder


🗺️ Galactic Structure & Logic

The following diagram illustrates the user's path from the general archive to specific planetary data:


🪐 Charted Positions

Note: All coordinates and positions are ≈\approx≈ approximate.

Segmentum Solar

The heart of the Imperium, containing the Throneworld and its immediate satellites.

World NameClassificationSignificance
TerraThrone WorldSeat of the Emperor
MarsForge WorldHub of the Mechanicus
LunaMoonPrimary Shipyards
ArmageddonHive WorldIndustrial Stronghold
NecromundaHive WorldUnderhive Conflict Zone
TitanMoonFortress Installation
ElysiaCivilised WorldImperial Colony
GathalamorCardinal WorldEcclesiarchy Center

Segmentum Obscurus

A region plagued by the Eye of Terror and constant attrition.

  • Cadia (Fortress World) →\rightarrow→ DESTROYED
  • Fenris: Death World
  • Medusa: Waste World
  • Cypra Mundi: Forge World
  • Mordian: Hive World
  • Vigilus: Sentinel World
  • Belis Corona: Dead World
  • Piscina IV: Mining World
  • Dimmamar: Cardinal World
  • Eye of Terror: Warp Rift

Segmentum Pacificus

  • Hydraphur: Forge World
  • Sabbat Worlds: Crusade Region
  • Jouran: Hive World (Solar alignment)
  • Sanctum: Chapter World

Segmentum Tempestus

  • Bakka: Mining World
  • Ophelia VII: Cardinal World
  • Krieg: Death World
  • Tallarn: Desert World
  • Gryphonne IV: Forge World (Status: Lost)
  • Catachan: Death World

Segmentum Ultima

The furthest reaches, containing the Realm of Ultramar and the Eastern Fringe.

  • Macragge: Chapter World
  • Realm of Ultramar: Stellar Realm
  • Baal: Chapter World
  • Nocturne: Death World
  • Chogoris: Feral World
  • Valhalla: Ice World
  • The Maelstrom: Warp Rift
  • Badab: Hive World
  • Octarius Sector: War Zone
  • Charadon: Ork Empire
  • T'au Empire: Xenos Empire
  • Ghoul Stars: Dead Region
  • Eastern Fringe: Frontier Region
  • Ryza: Forge World
  • Golgotha: Ork World
  • Rynn's World: Chapter World
  • Black Reach: Hive World
  • Kar Duniash: Naval Fortress
  • Sotha: Chapter World (Destroyed)
  • Attila: Feudal World
  • Pariah Nexus: War Zone
  • Ichar IV: Hive World
  • Commorragh: Webway City (Located in the Webway)
  • Ullanor: Former Site (Relocated to Ultima)

📂 Data Retrieval

To access detailed intelligence on any of the aforementioned locations, utilize the Dossier function.

{
  "action": "open_dossier",
  "target": "selected_world",
  "parameters": {
    "include_history": true,
    "include_strategic_value": true,
    "clearance_level": "Inquisitorial"
  }
}

→\rightarrow→ Select a cartographic record to open its dossier.