This archive tracks four layers. A record present in 1 of them (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
[RECORD LOST]
No record for this location in The 41st Millennium.
Era Indomituspost-Rift
imperium
Forge world
An Eastern Fringe forge world that spent millennia under ork rule after a Waaagh! took it in M35, and was reconsecrated once it was won back. It was where the Vanquisher cannon was first developed and is home to Legio Solaria. One of its Macro-Enginseers serves Belisarius Cawl.
Position
Map frame: 872, 632 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 395 units ≈ 42k light years, south-east of the galactic core.
Height above the disk plane: 6.4 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Tigrus 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.
book-joinhigh
wh40k.lexicanum.com/wiki/Archmagos_(Novel ) §Characters — 'Lipuid Vrange - Macro-Enginseer of Tigrus', ch. 9; and https://wh40k.lexicanum.com/wiki/Enginseer — 'Lipuid Vrange - Macro-Enginseer of Tigrus, in service to Belisarius Cawl', citing Archmagos ch. 9 (both read directly 2026-09-30). Joined as `mentioned`.
segmentummedium
wh40k.lexicanum.com/wiki/Tigrus 'a Forge World of the Imperium located in the Ultima Segmentum within the Eastern Fringe' (read through a search-engine extract of the page on 2026-09-30 (a direct browser read was not available that run, and Lexicanum refuses WebFetch/curl); needs a direct read to confirm). Lexicanum also carries a Tigris (Forge World) page; the search extract treats the two spellings as one world, which is why `Tigris` is an alias. NAME-COLLISION CHECK: if a direct read shows two different worlds, split the alias off.
classlow
No terrain words were available for the world itself; `forge` because it is a forge world with nothing published to contradict the default look. Editorial.
gposlow
inferred: region-level. Ultima Segmentum, Eastern Fringe, no sector published; placed out on the Ultima eastern rim with the other Eastern Fringe worlds (tsagualsa, solemnace), clear of them. Z from compute-z.mjs.
erashigh
Only `indomitus`, the one era a tracked book names it in.