Horus Heresy · atlas

World · Segmentum Solar

Mars

Fig. 1 · Location on the map

Mars is the first and greatest forge world of the Imperium, the capital of the Mechanicum and the Fortress of the Segmentum Solar, neighbouring Terra. Here the Schism of Mars took place (005–006.M31), when Fabricator General Kelbor-Hal declared for Horus.

Category
World
Location
Segmentum Solar
Significance on the map
3 of 5
Place confidence
Place reliable
Events
5 events

Place on the map

Grounds for placing the system exactly here on the map:

  • «Mars… located in the Sol System, Segmentum Solar; adjacent to Terra» — Atlas compilation · source check 2026
  • Schism of Mars 005–006.M31

Events in the system

Legions

Legions named in the system’s events:

Factions

Named among the sides of the system’s events:

Characters

Linked to the system’s events:

Sources

  1. Lexicanum: Mars
  2. Lexicanum: Schism of Mars
  3. Atlas compilation · source check 2026
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