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 and capital of the Khaldun Sector
A minor forge world, home of the Titan Legion Legio Pallidus Mors and capital of the Khaldun Sector, with six Knight Worlds sworn to it. It is tidally locked: its star-facing side is covered in photovoltaic fields that feed vast subterranean forge-cities, and its void-facing side is ringed with dockyards. It is also a vassal of the Gryphonnen Octad.
Era Indomituspost-Rift
imperium
Forge world hosting the Gryphonnen diaspora fleet
Six years after the fall of Gryphonne IV, the forge-synod's refugee fleet still crowds the dockyards of Tolkhan, its ships outnumbering their hosts', while the synod bargains with a reluctant Fabricator General to let more of its magi make planetfall.
Contested record
Segmentum: Lexicanum's Tolkhan infobox says Segmentum Tempestus, citing Imperial Armour Volume One; Lexicanum's Khaldun Sector article records that Firepower Issue 3 (a Fanatic Press publication) puts the sector in Segmentum Obscurus. This record follows Imperial Armour, and Dominion Genesis makes Tolkhan a vassal of the Gryphonnen Octad, whose capital is a Tempestus world.
Position
Map frame: 415, 850 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 360 units ≈ 38.3k light years, south of the galactic core.
Height above the disk plane: -7.5 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Tolkhan System
Books set here
2 titles in the reading tracker touch this record. Titles link out to the tracker.
Every fact in this record, and where it came from. Editorial derivations say so.
identityhigh
wh40k.lexicanum.com/wiki/Tolkhan (read directly in a browser on 2026-10-01): 'an Imperial Forge World that is home to the Titan Legion Legio Pallidus Mor', 'the Sector Capital of the Khaldun Sector and a vassal world of the Gryphonnen Octad as well', citing Imperial Armour Volume One pg. 8, Firepower Issue 3 and Dominion Genesis (Novel), Tolkhan chs 1, 5 and 6. https://wh40k.lexicanum.com/wiki/Gryphonne_IV (read 2026-10-01): the diaspora fleet 'would eventually come to rest in orbit of the Tolkhan, a Gryphonnen vassal and minor forge world' (Tolkhan ch. 5). NAME-COLLISION CHECK: no other index record uses the name; https://wh40k.lexicanum.com/wiki/Tolkhan_System has no article.
segmentummedium
wh40k.lexicanum.com/wiki/Tolkhan infobox 'Segmentum: Segmentum Tempestus' (Imperial Armour Volume One) and https://wh40k.lexicanum.com/wiki/Khaldun_Sector ('located in the Hefell region of the Segmentum Tempestus', with a conflicting-sources note for Firepower Issue 3's Obscurus), both read 2026-10-01. See disputed.
classmedium
'forge' from what the page says it LOOKS like: a gravitationally locked, long-lifeless rock whose star side is photovoltaic fields and whose forges and cities run for miles through the mantle, with dockyards in stationary orbit on the void side (Lexicanum Tolkhan, citing Tolkhan ch. 1). 'dead' (airless and cratered) was weighed and refused: it is an industrial world that is lived and worked on, not a corpse.
gposlow
inferred: Segmentum Tempestus and the Khaldun Sector are published but not where the sector lies. Tolkhan is a vassal of the Gryphonnen Octad, and the diaspora fleet reached it after creeping 'from star system to star system' for more than a year (Lexicanum Gryphonne_IV, Misery's Daughter ch. 4 and Tolkhan ch. 5), so it is placed in the same southern Tempestus interior as Gryphonne IV at [415, 850], a short way off and not adjacent. Region-level only. Z from compute-z.mjs under zPolicy.
erashigh
m41: Legio Pallidus Mors, the Khaldun Sector capital, its six Knight Worlds, the photovoltaic fields and dockyards (Lexicanum Tolkhan; Khaldun_Sector, Firepower Issue 3). indomitus: the Gryphonnen diaspora at Tolkhan six Terran years after the fall, and the Fabricator General's reluctance to let more Gryphonnen magi make planetfall (Lexicanum Tolkhan, Tolkhan chs 1 and 5).
systemIdmedium
'tolkhan': Lexicanum Tolkhan's infobox names the Tolkhan System (Tolkhan ch. 6) and Khaldun_Sector calls it the sector's principal system. No survey is authored: Tolkhan is a visited setting, not this book's primary, and no source names its star or a sibling body.