This archive tracks four layers. A record present in 2 of them (M41, IND) 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
Pilgrim world; the Civitas Beati
Tactically worthless and strategically decisive at the same time: a single walled holy city on an otherwise empty world, which mattered only because the reincarnated Saint chose to stand there and the Archenemy therefore had to kill her there.
Era Indomituspost-Rift
imperium
[RECORD LOST]
[RECORD LOST]
Nothing survives in the archive for Era Indomitus.
Position
Map frame: 100, 600 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 412 units ≈ 43.9k light years, west of the galactic core.
Height above the disk plane: -2.8 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Herodor 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/Herodor [RECORD LOST] — publishes no planetary class; https://wh40k.lexicanum.com/wiki/Planets_(List) types it only 'Imperial World'. Rendered temperate for a populated, walled, habitable world rather than guessing a specialism
gposmedium
wh40k.lexicanum.com/wiki/Sabbat_Worlds derived: — 'a group of star systems along the edge of the Segmentum Pacificus', subdivided into the Newfound Trailing Group, the Khan Group, the Cabal Systems, the Carcaradon Cluster and the Erinyes Group. This dataset places the cluster on the rimward edge of Pacificus, anchored on Tanith and Verghast, which were already here, and gives each published sub-group its own sub-cluster. Herodor is Khan Group, which gets its own sub-cluster trailing of the Newfound Trailing worlds