This archive tracks four layers. A record present in 3 of them (HH, M41, IND) is silent in the rest, and says so.
The Horus HeresyM30–M31
imperium
Compliant feral world; the Serpent Lodge
Brought to compliance early in the Crusade and left with its warrior lodges intact. Horus was cut here with an anathame and taken to the temple on Davin's moon; what came back was no longer only Horus.
Age of the ImperiumM32–M40
[RECORD LOST]
No record for this location in Age of the Imperium.
The 41st Millenniumpre-Rift
none
Dead world
Depopulated, and its ownership no longer recorded by the Imperium.
Era Indomituspost-Rift
noneImperium Sanctus
Dead world
Still empty.
Position
Map frame: 580, 470 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 85 units ≈ 9.1k light years, north-east of the galactic core.
Height above the disk plane: 3.7 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Davin System
Books set here
2 titles in the reading tracker touch this record, 1 of them as a primary location. Titles link out to the tracker.
wh40k.lexicanum.com/wiki/Davin infobox Class = 'Dead World, former Feral World'; Population = None. The infobox is PRESENT tense, so the two halves of it are two different eras: `feral` is the baseline because that is the world the Heresy books walk around on, and the Dead World half is carried by the m41 and indomitus statuses, which the renderer re-classes on. Rendering the baseline dead made Davin an airless rock in the one era it has a story — its own hh status calls it a feral world in as many words
gposlow
derived: Ultima Segmentum, placed on the western Ultima frontier as a Great Crusade compliance world within reach of the Warmaster's expedition fleet. No published bearing exists