World · Segmentum Ultima

Dagonet

Fig. 1 · Location on the map

Dagonet is a world of the Segmentum Ultima, one of Horus’s first conquests. At the Dagonet Incident (008.M31) the Officio Assassinorum sent an Execution Force to kill Horus, but only his double Luc Sedirae died — after which the Sons of Horus burned the world to the ground.

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

Place on the map

Grounds for placing the system exactly here on the map:

«Dagonet is located in the Segmentum Ultima» — Lexicanum (checked 2026)

Events in the system

Dagonet Incident 008.M31 · Loyalist victory

Factions

Named among the sides of the system’s events:

Imperium of Man Other · 1 event
Chaos Cults / the Lost and the Damned Warp entity · 1 event

Sources

Lexicanum: Dagonet
WH40k Fandom: Horus Heresy Chronology

Open in the atlas

Permalink: https://astart.es/en/systems/dagonet/