This archive tracks four layers. A record present in 1 of them (M41) is silent in the rest, and says so.
The Horus HeresyM30–M31
[RECORD LOST]
No record for this location in The Horus Heresy.
Age of the ImperiumM32–M40
[RECORD LOST]
No record for this location in Age of the Imperium.
The 41st Millenniumpre-Rift
imperium
Homeworld of the Royal Validians
The planet the Royal Validian regiments of the Imperial Guard hail from, red-uniformed with gold highlights. In Ice Guard its 14th Royal Validian fights the forces of Chaos on Cressida beside the Valhallan 319th and helps evacuate Imperial citizens between the hive cities, at the cost of at least a company of four hundred Guardsmen.
Era Indomituspost-Rift
[RECORD LOST]
No record for this location in Era Indomitus.
Position
Map frame: 797.2, 841.4 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 453 units ≈ 48.2k light years, south-east of the galactic core.
Height above the disk plane: 9.7 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Validius System
Books set here
1 title in the reading tracker touches this record. Titles link out to the tracker.
Every fact in this record, and where it came from. Editorial derivations say so.
identitymedium
wh40k.lexicanum.com/wiki/Royal_Validians (read directly in a browser on 2026-10-02): 'The Royal Validians are Imperial Guard Regiments hailing from the planet of Validius', cited to Ice Guard (Novel), Hammer of the Emperor (Omnibus) p. 377, and to Waiting Death. Lexicanum has no Validius article (the page is empty) and Planets_(List) does not carry it. NAME-COLLISION CHECK: no other index record uses the name.
book-joinmedium
Joined to Ice Guard as 'mentioned': the 14th Royal Validian's homeworld is named in the novel (Lexicanum Royal_Validians, p. 377) and never visited; the novel is set on Cressida.
classlow
editorial: 'temperate', the palette's neutral default, because no permitted source describes what Validius LOOKS like; the only page that names it describes the regiments' uniforms, not the world. Reopen when a permitted host describes its terrain.
segmentumhigh
null: no permitted source gives a segmentum, sector, subsector or system for Validius (Lexicanum has no article; Royal_Validians gives none; read 2026-10-02).
gposlow
inferred: no published segmentum, sector, subsector or bearing. No segmentum is claimed; unsurveyed rim, no positional information. [797.2, 841.4] is build_locations.py rim_xy('validius') (the arithmetic reproduced and checked against khadar's [644.8, 928.9], the script not run); its nearness to cressida is the id hash, not a claim that the two worlds are neighbours. Z 9.7 from compute-z.mjs under zPolicy.
erasmedium
Only 'm41' is carried: the Royal Validians are known from Ice Guard and Waiting Death alone, both filed in M41 — Pre-Great Rift on this shelf. 'imperium': it raises Imperial Guard regiments.
systemIdhigh
editorial: 'validius', the world's own name; no permitted source names a star or a system. No systems/validius.json: the world is mentioned, not a setting, and canon enumerates nothing about its system (no-system-survey).