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
Forge world under permanent siege
One of the great forge worlds, and the one the orks will not leave alone. Its plasma work is the best in the Imperium, which is most of the reason for both facts.
Era Indomituspost-Rift
imperium
Still forging, still besieged
[RECORD LOST]
Nothing survives in the archive for Era Indomitus.
Position
Map frame: 690, 460 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 194 units ≈ 20.7k light years, 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: Ryza System
Books set here
1 title in the reading tracker touches this record. Titles link out to the tracker.
derived: Ultima Segmentum, no published sector. Placed in the Ultima interior north of the Ultramar cluster, and pulled inside the Astronomican after the validator flagged the first placement as outside it — a permanently besieged forge world that still ships plasma to the Imperium is not beyond astropathic reach
map-canonmedium
Ryza is named on GW's official Era Indomitus galaxy map. Only the relationship was read from it; the coordinate here is our own derivation
book-linkhigh
named in a tracked book: Man of Iron (blackstone-fortress::bf-main::9). The book's own cover description makes UR-025 the automatous tool of Magos-Ethericus Nanctos III of Ryza — a character's place of origin, not a setting, which is why the sprint-4 extractor scored it 6.5 and left the record unlinked. Sprint 11 links it at role 'mentioned', which is the honest name for that. (This entry replaces a sprint-8 note that said the record carried no book link.)