This archive tracks four layers. A record present in 2 of them (HH, M41) is silent in the rest, and says so.
The Horus HeresyM30–M31
imperium
Brought into compliance by the Raven Guard
Inducted into the Imperium by the Raven Guard during the Horus Heresy, and named after Admiral Kathur of the Imperial Army, who held it against the Death Guard shortly after the Heresy closed.
Age of the ImperiumM32–M40
[RECORD LOST]
No record for this location in Age of the Imperium.
The 41st Millenniumpre-Rift
imperium
Shrine world lost to plague; the Kathurite Reclamation
A beacon of faith in the Scarus Sector beside the Eye of Terror, a world of monasteries and cathedrals raised as a memorial to the saint who shares its name, with its capital at Solthane. During the 13th Black Crusade a plague rises from no source the Warmaster controls and turns its people into a horde of the infected, and the Imperium pulls regiments back from the Cadian front rather than let the symbol fall: the Kathurite Reclamation, whose spearhead of Guard regiments, half a company of Raven Guard and agents of the Inquisition is the story of Cadian Blood. Afterwards it is resettled, its population few.
Era Indomituspost-Rift
[RECORD LOST]
No record for this location in Era Indomitus.
Position
Map frame: 234, 318 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 322 units ≈ 34.3k light years, north-west of the galactic core.
Height above the disk plane: 4.7 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Kathur System
Books set here
1 title in the reading tracker touches this record, 1 of them as a primary location. Titles link out to the tracker.
Every fact in this record, and where it came from. Editorial derivations say so.
identityhigh
wh40k.lexicanum.com/wiki/Kathur (read directly in a browser on 2026-10-02): 'Kathur was a Shrine World in the Scarus Sector, neighboring the Eye of Terror'; inducted by the Raven Guard during the Horus Heresy and named after Admiral Kathur of the Imperial Army; 'a memorial to an Imperial Saint of the same name'; the Zombie Plague outbreak during the 13th Black Crusade and the Kathurite Reclamation; capital Solthane; every statement cited to Cadian Blood (Novel). https://wh40k.lexicanum.com/wiki/Cadian_Blood_(Novel): Black Library's description, 'the Imperial shrine world of Kathur is blighted by Chaos'. NAME-COLLISION CHECK: no other index record uses the name, and Lexicanum's Kathur article carries no disambiguation notice.
segmentumhigh
wh40k.lexicanum.com/wiki/Kathur infobox: Segmentum 'Segmentum Obscurus', Sector 'Scarus Sector', System blank, Affiliation Imperium, Class Shrine World, Population 'Few (resettling)', each cited to Cadian Blood (Novel).
classmedium
'shrine' for what the sources say the world LOOKS like, not for its infobox tag: a world raised as a memorial to a saint, with monasteries (the Jardus 6th hold one) and a capital, Solthane, built round a central cathedral that the Ecclesiarchy forbids the Guard to shell (Lexicanum Kathur and Cadian_Blood_(Novel)). Neither page gives a terrain, climate or colour word, so the render is the cathedral-world palette and nothing more is claimed; the plague changed its people, not its surface.
gposlow
inferred: the sector and a relational bearing are published (Scarus Sector, 'neighboring the Eye of Terror', Lexicanum Kathur); no coordinate is. This dataset places the Scarus Sector as a group immediately spinward of Cadia (the gudrun record's gpos note), between x 246-330 and y 300-380, and carries the Eye of Terror as a feature centred [180, 300] with a 29-unit radius (regions.json). Kathur is placed on the Eye-facing, north-western edge of that group at [234, 318], 28 units outside the storm's edge and at least 24 units from every other marker (Durer 24, Orison VIII 25, Gudrun 28, Cadia 30). Z 4.7 is the zPolicy value (compute-z.mjs kathur 234 318).
erasmedium
m41: the Kathurite Reclamation falls during the 13th Black Crusade (Lexicanum Kathur), and the shelf files Cadian Blood M41 — Pre-Great Rift; allegiance 'imperium' per the infobox, the world being lost to plague rather than taken by a power, and resettled after (Population 'Few (resettling)'). hh: the Raven Guard induction and Admiral Kathur's defence against the Death Guard (Lexicanum Kathur), high as to the facts; no shelved book is set there in that era. aoi and indomitus carry nothing: no permitted source speaks of the world in either.
systemIdmedium
'kathur': Lexicanum Kathur's infobox leaves System blank, so the id is the world's own, as for golgotha and cressida. systems/kathur.json is a one-body TRUNCATED survey, authored because this is the novel's PRIMARY setting.