This archive tracks four layers. A record present in 4 of them (HH, AoI, M41, IND) is silent in the rest, and says so.
The Horus HeresyM30–M31
imperium
Site of the Pharos
An unremarkable Ultramar world sitting on top of a xenos machine nobody built and nobody understood, which could cut through the Ruinstorm and light ships home. Imperium Secundus ran on it until the Night Lords took it.
Age of the ImperiumM32–M40
imperium
Scythes of the Emperor homeworld
Given to a Chapter after the Heresy; the Pharos never worked again.
The 41st Millenniumpre-Rift
tyranid
Consumed; a dead world stripped to the rock
Hive Fleet Kraken took the world and most of the Chapter with it. The survivors have been a fleet-based remnant ever since.
Era Indomituspost-Rift
none
Dead world
Stripped. The Scythes still name it as their homeworld because there is nothing else to name.
Position
Map frame: 664, 604 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 194 units ≈ 20.7k light years, south-east of the galactic core.
Height above the disk plane: -6.1 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Sotha System
Books set here
5 titles in the reading tracker touch this record, 3 of them as a primary location. Titles link out to the tracker.
wh40k.lexicanum.com/wiki/Sotha infobox Class = 'Previously Civilised World, Adeptus Astartes Homeworld, Tomb World (former)'. The infobox names three states in one field and this record spans all of them, so the baseline is the FIRST — Civilised World, rendered temperate — and the later states are carried by the m41 and indomitus statuses. It was previously rendered dead 'for the state it has held since M41', which greyed out the two eras in which Sotha is a living Ultramar world with the Pharos on it
gposmedium
derived: Ultima Segmentum, within reach of Macragge during Imperium Secundus — the Pharos was used to guide ships to Ultramar. Placed just south-west of Macragge. Relational
pharoshigh
wh40k.lexicanum.com/wiki/Pharos_(Device ) — the Pharos is a device on Sotha, not a separate world, so it is carried in this record rather than as its own location
era-m41-statushigh
the m41 status was 'Consumed' alone. With the baseline moved to temperate that word carries no weight in the renderer — app/src/stages/palettes.js STATUS_CLASS has no rule for it — and a world eaten by Hive Fleet Kraken would have gone on rendering as a green civilised world. 'a dead world stripped to the rock' states the same outcome in words the shader reads