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
The Wolf's Moon: radiation-soaked moon of Fenris and home of the Longhowl astropathic station
Fenris's moon, the Wolf's Moon. Radiation-soaked; the domed city holding the Longhowl astropathic station is the only habitable place on it. At the end of M41 a Daemon Prince of the Infernal Tetrad comes here (Curse of the Wulfen).
Era Indomituspost-Rift
[RECORD LOST]
No record for this location in Era Indomitus.
Contested record
Segmentum follows the Fenris record (its parent world), which carries the Solar/Obscurus dispute.
Position
Map frame: 338, 398 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 191 units ≈ 20.4k light years, north-west of the galactic core.
Height above the disk plane: 1.3 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
Every fact in this record, and where it came from. Editorial derivations say so.
identityhigh
wh40k.lexicanum.com/wiki/Valdrmani (read 2026-10-12) redirects to Fenris §Satellites: 'Valdrmani — Known as the Wolf's Moon. Valdrmani is home to the Longhowl astropathic station. The domed city is the only habitable location on the radiation-soaked moon.' The body already exists in systems/fenris.json (id valdrmani, kind moon, parent fenris, seed 15); this record gives it an index entry. NAME-COLLISION CHECK: no index record uses the id, label or 'Wolf's Moon'.
book-joinmedium
MENTIONED for Curse of the Wulfen: List_of_Daemon_Princes cites the novel's Chapter 8 for Tzen'char, who 'Fought with the Space Wolves on Midgardia, then appeared at Valdrmani to complete a daemonic ritual'. No permitted page says how much of the novel is set there, so mentioned, not visited.
typehigh
moon: Lexicanum lists it under Fenris §Satellites; systems/fenris.json carries it as kind moon, parent fenris.
segmentummedium
obscurus, following the Fenris record (its parent world).
classmedium
'dead' (airless grey rock), by the look: 'the radiation-soaked moon' with one domed city as 'the only habitable location'. A moon body with no survey class already renders dead, so the picture does not change.
gposhigh
derived: identical in x and y to Fenris's [338, 398], being its satellite. Z 1.3 is the zPolicy value (compute-z.mjs valdrmani 338 398).
erashigh
m41 only (the novel's end of M41). Allegiance 'imperium'.