Horus Heresy · atlas

World · Segmentum Ultima

Arigatta

Fig. 1 · Location on the map

Arigatta (Ariggata) is a world where c. 004.M31 the joint Imperial Compliance by the Sons of Horus, Ultramarines and World Eaters took place: an example of three Legions acting in concert before the schism.

Category
World
Location
Segmentum Ultima
Significance on the map
1 of 5
Place confidence
Place reconstructed
Events
1 event

Place on the map

The place is reconstructed: the canon does not name it directly; the map places it from indirect evidence.

Grounds for placing the system exactly here on the map:

Russian source notes (1) RU
  • Joint Compliance by Sons of Horus + Ultramarines + World Eaters — минорные театры; действие с участием Ультрамаринов, восточный/фронтирный театр по своду «Карты Ереси» (вывод свода)

Events in the system

Legions

Legions named in the system’s events:

Factions

Named among the sides of the system’s events:

Sources

  1. WH40k Fandom: Horus Heresy Chronology
  2. Atlas compilation · source check 2026
  3. Atlas compilation · reconstruction
Open in the atlas

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