World · Segmentum Ultima

Percepton Primus

Fig. 1 · Location on the map

Percepton Primus is a world of the Percepton system in Ultramar; in the Percepton Campaign (008.M31) the Word Bearers, at the opening of the Shadow Crusade, crippled the Ultramarines’ fleet, but were burned off the world at the cost of phosphex.

Category: World
Location: Segmentum Ultima
Significance on the map: 2 of 5
Place confidence: Place reliable
Events: 1 event

Place on the map

Grounds for placing the system exactly here on the map:

«Percepton Primus — in the Percepton System of Ultramar» — Atlas compilation · source check 2026

Events in the system

Battle of Percepton Primus 008.M31 · Pyrrhic loyalist victory

Legions

Legions named in the system’s events:

XIII Ultramarines 1 event
XVII Word Bearers 1 event

Factions

Named among the sides of the system’s events:

Imperial Army 1 event

Sources

Lexicanum: Percepton Campaign
Atlas compilation · source check 2026

Open in the atlas

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