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Dead World

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A δ-class (delta class) or Dead World is an airless and completely sterile world, totally devoid of an atmosphere, ecosystem and native natural life, and unsuitable for supporting any life. With the possible exception of Imperial facilities such as Research Stations based on the planet, its population is otherwise nonexistent.[1]

Most such planets have always been dead worlds; others were originally habitable worlds, reduced to dead world status through apocalyptic events, such as exterminatus, Tyranid consumption or destructive internecine war.[1]

A dead world's Tithe Grade is aptus non ("not applicable").[1]

N.B. This classification is not to be confused with Death Worlds, which are planets with dangerous environments hostile to human life.

Notable Dead Worlds

A

Planet name Segmentum Sector Subsector System Population Notes
Adrantis Five Segmentum Pacificus Unknown Unknown Unknown N/A Conquered and devoid of life by the order of Lord Commander Solar Macharius due to possession of heretical dark technology
Alpha Shalish Segmentum Solar Unknown Unknown Unknown N/A Became the Dead World due to series of cataclysms and wars
Amun'an Morrus Segmentum Obscurus Calixis Unknown Unknown Unknown Destroyed by Exterminatus during the Angevin Crusade
Andronicus Prime Segmentum Ultima Jericho Reach Unknown Andronicus System None Became Dead World after the crushing of the unknown vessel into planet's moon and debris mass falling
Arcetri Unknown Unknown Unknown Unknown None Former Forge World that was attacked and consumed by a tendril of Hive Fleet Harbinger.
Arkhona Segmentum Obscurus Unknown Unknown Kharon System None Entire population of the planet had been mystically destroyed
Assyri Unknown Unknown Unknown Unknown None Population destroyed by Eldar
Auxesia Unknown Unknown Unknown Unknown None Former Civilized World. Attacked and ravaged by the Iron Warriors
Auxilion Unknown Unknown Unknown Unknown None Former Hive World. Population of the planet was devoured by the Dark Eldar Carnival of Pain, though the authorities of the Imperium never know about that - population are just completely disappeared
Azoth Unknown Unknown Unknown Unknown None The planet was site of the Daemonic incursion and so was purged of life by the Revilers Chapter in 999.M37

B

Planet name Segmentum Sector Subsector System Population Notes
Barbarus Prime Ultima Segmentum Unknown Unknown Tarsis Ultra System Unknown Former Mining World. Consumed by Tyranids
Barnassus Unknown Unknown Unknown Unknown Unknown Former Forge World. Destroyed in a cataclysm, caused by Chaos forces
Bekrin Ultima Segmentum Jericho Reach Unknown Unknown Unknown Former Shrine World. Destroyed by the Tyranids of Hive Fleet Dagon
Belis Corona Segmentum Obscurus Belis Corona Sector Belis Corona Subsector Belis Corona System Unknown No life on the planet. Great orbital docks
Belissar Ultima Segmentum Jericho Reach Unknown Unknown Unknown There is no information whether the planet was uninhabited originally or become to be a dead world for some reason
Belphago Unknown Unknown Unknown Unknown Unknown Mysterious planet that is home to ancient xenos ruins pre-dating human civilisation
Berien Unknown Unknown Unknown Unknown Unknown The planet is a Necron Tomb World
Berien VI Ultima Segmentum Unknown Unknown Unknown Unknown All life on the planet was eradicated by unknown force
Beta Fortanis Unknown Unknown Unknown Unknown Unknown All life on the planet was consumed by Tyranids
Bloodfall System, Planets of Obscurus Calixis Sector Hazeroth Abyss Bloodfall System Unknown All five planets of this system are considered to be a Dead Worlds
Brendine II Unknown Unknown Unknown Unknown Unknown Was destroyed by the forces of the Slaanesh worshiper
Brigantia III Unknown Unknown Unknown Unknown Unknown Also - former Fortress World. Was destroyed due to gravitic anomaly of Ork Attack Moon appearing near this planet in M32 during the War of the Beast

C

Planet name Segmentum Sector Subsector System Population Notes
Candau Ultima Unknown Unknown Unknown None Former Agri World. Population destroyed by heretics
Carrion Deep Segmentum Tempestus Unknown Unknown Unknown None Also Necron Tomb World. Imperial deep-range outpost was destroyed by Necrons and the planet has been quarantined
Chemos Ultima Segmentum Aquitane Sector Unknown Chemos System None Former Mining World. Bombed from the orbit after the Horus Heresy. No further information about the planet can be found.
Chordelis Unknown Unknown Unknown Tarsis Ultra System None Former Civilized World. Inquisitor Lord Kryptman had ordered Exterminatus on the planet to prevent Hive Fleet Leviathan to consume its biomass.
Cocholos Unknown Unknown Unknown Unknown None Also Tomb World. All human population was destroyed by Daemon Prince Beublghor
Colchis Segmentum Pacificus Unknown Unknown Unknown None Annihilated by the order of Inquisition
Cousteau XI Unknown Unknown Unknown Unknown None Former Adeptus Astartes Homeworld of the Fire Hawks Space Marine Chapter. Rendered uninhabitable prior to 228.M40
Cressida Unknown Unknown Unknown Unknown None After the incursion of Chaos the planet was subjected to Exterminatus
Cthonia Segmentum Solar Unknown Unknown Cthonia system None The planet was destroyed after the Horus Heresy
Cyrene Ultima Korianis Sector Subsector Aurelia Unknown None The planet was destroyed through Exterminatus

D

Planet name Segmentum Sector Subsector System Population Notes
Dagonet Ultima Segmentum Unknown Unknown Unknown None The planet was purged by orbital bombardment from the Sons of Horus during the Horus Heresy
Damnos Ultima Segmentum Unknown Unknown Unknown None Unknown to the Imperium, Damnos was a Necron Tomb World after the resurrection of which, the population was eliminated.
Dolumar IV Ultima Segmentum Unknown Unknown Unknown None Former Industrial World, former Desert World. Subjected to Exterminatus due to Chaos corruption
Doton Ultima Segmentum Unknown Unknown Unknown None All life on the planet was eradicated by unknown force
Dunen II Ultima Segmentum Unknown Unknown Unknown None All life on the planet was eradicated by unknown force

E

Planet name Segmentum Sector Subsector System Population Notes
Eden Prime Segmentum Solar Unknown Unknown Unknown N/A Former Agri World. Destroyed by Ork Warboss 'Eadcrumpa
Eireius Segmentum Solar Unknown Unknown Unknown None Former Agri World, former Jungle World. Eaten by Hive Fleet Leviathan
El'Phanor Segmentum Solar Unknown Unknown Unknown None Was scored by Abaddon the Despoiler during 4th Black Crusade in 001.M34
Eldritch Ultima Segmentum Unknown Unknown Unknown None Destroyed by Exterminatus due to Necron activity
Emperor's Halo Unknown Unknown Unknown Unknown None Habitable asteroid belt. Devoid of life by bombardment from the Terminus Est
Ephraeleon Unknown Unknown Unknown Unknown None Former Exodite World. Destroyed by Tyranids
Erinia Ultima Unknown Unknown Unknown None Former Agri World. Destroyed by the Tyranids of Hive Fleet Behemoth
Eurydice Obscurus Ixaniad Sector Unknown Unknown None Former Paradise World. Plague bombed by the Blighted Ones Warband
Evangel Ultima Segmentum Unknown Unknown Unknown None All life on the planet was eradicated by unknown force

F

Planet name Segmentum Sector Subsector System Population Notes
Faze V Ultima Segmentum Unknown Unknown Unknown Unknown Burned by the Dark Angels after the Faze V Uprising
Fell Core Ultima Segmentum Unknown Unknown Unknown None Former Hive World. Subjected to Exterminatus due to Tyranid infestation
Forgefane Segmentum Tempestus Unknown Unknown Unknown None Former Fortress World of the Iron Warriors. Devoured by Hive Fleet Leviathan

G

Planet name Segmentum Sector Subsector System Population Notes
Gehöft Unknown Unknown Unknown Unknown Unknown Was devastated by the Blighted Claw Chaos Warband
Gephistux Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus by Doom Warriors Chapter
Gheistos Unknown Unknown Unknown Unknown None Former Agri World. All the life was destroyed due to Gheistos Cataclysm
Ghorala Ultima Segmentum Unknown Unknown Unknown None Former Ork World. All the life devoured by Tyranids
Gorgo Unknown Unknown Unknown Unknown None Devoured by the Hive Fleet Leviathan
Grangold Segmentum Obscurus Calixis Sector Adrantis Subsector Unknown Unknown There is no information whether the planet was uninhabited originally or become to be a dead world for some reason
Grendel's World Ultima Unknown Unknown Unknown Unknown The entire population was wiped out by the Night Lords
Gryphonne IV Segmentum Tempestus Unknown Unknown Unknown N/A (8,520,000,000 before consuming by the Tyranids) Was eaten alive by Hive Fleet Leviathan

H

Planet name Segmentum Sector Subsector System Population Notes
Haakonath Unknown Unknown Unknown Haakoneth System None The planet was utterly destroyed by the Hrud's misterious time distortions
Hamman's World Ultima Segmentum Unknown Unknown Moran system Unknown Was destroyed by Hive Fleet Kraken
Hekarth V Unknown Unknown Unknown Unknown None Eaten by Hive Fleet Leviathan
Hesperax Segmentum Obscurus Unknown Unknown Unknown None Destroyed by the Deathwatch Kill Team due to the Dark Eldar incursion
Holda Ultima Segmentum Unknown Unknown Unknown Unknown All life on the planet was eradicated by unknown force
Horestis Unknown Unknown Unknown Unknown Unknown Former Daemon World. Subjected to Exterminatus
Hurspraxia Unknown Unknown Unknown Unknown Unknown Population were destroyed by unknown force
Hydra Minoris Unknown Unknown Unknown Hydra Cordatus Unknown Population were destroyed by Zombie Plague unleashed by Typhus of the Death Guard
Hyrus Secundus Unknown Pyrus Reach Sector Unknown Hyrus system Unknown Dark Apostle Valerius and his forces destroyed all the population and turned the world into a radioactive wasteland

I

Planet name Segmentum Sector Subsector System Population Notes
Ichorax Unknown Unknown Unknown Unknown None, former billions Former Hive World. Population was wiped by the Emperor's Children
Ioline Segmentum Obscurus Unknown Unknown Diamor System Unknown Former Industrial World. Life on the planet was destroyed during the Diamor Campaign
Isstvan III Unknown Unknown Unknown Isstvan system N/A, was 12 billion pre-Heresy Former Hive World. Virtually all life was destroyed during the Battle of Isstvan III
Ixya Unknown Unknown Unknown Unknown Unknown Also - Tomb World, former Mining World. The only one habitat - Mechanicus station - was destroyed by Necron

J

Planet name Segmentum Sector Subsector System Population Notes
Jagga Ultima Segmentum Unknown Unknown Unknown Unknown Former Ork World. The planet was consumed by the Hive Fleet Behemoth
Jangrille Prime Unknown Unknown Unknown Unknown None Was destroyed by Tyranids
Jonah's World Obscurus Unknown Unknown Unknown None Former Shrine World. Was plagued by Typhus. All population died.

K

Planet name Segmentum Sector Subsector System Population Notes
Ka'mais Ultima Segmentum Unknown Unknown Unknown Unknown Former Tau Sept. Harvested by Necrons
Kataris Segmentum Obscurus Unknown Unknown Unknown Unknown Former Agri World. Subjected to Exterminatus due to Daemonic incursion
Khorion IX Segmentum Obscurus Unknown Unknown Unknown Unknown World was subjected to Exterminatus due to Daemons infestation
Khur Unknown Unknown Unknown Unknown Unknown Planet was the Word Bearers' base and after the Horus Heresy was subjected to Exterminatus during the Great Scouring
Klybo Segmentum Obscurus Calixis Sector Markayn Marches Klybo System None There is no information whether the planet was uninhabited originally or become to be a dead world for some reason
Kolovan Unknown Unknown Unknown Unknown None Former Industrial World. Was nearly destroyed by Tyranids, and though their menace was repelled by the Ultramarines, the world became poisoned, acidic planet where is no human life left
Krandor III Segmentum Obscurus Unknown Unknown Unknown None Subjected to Exterminatus due a massive Chaos Cult led rebellion in 853.M41

L

Planet name Segmentum Sector Subsector System Population Notes
Lassiv Unknown Hecuba Unknown Unknown Unknown Population were destroyed by Exterminatus due to worship of Chaos
Libethra Segmentum Tempestus Orpheus Sector Unknown Unknown Unknown Former Adeptus Astartes Homeworld. Destroyed by Necrons
Lilarsus Ultima Eastern Fringe Unknown Unknown Unknown Former Maiden World. Destroyed by Tau
Lycosidae Segmentum Obscurus Calixis Sector Golgenna Reach Lathe Unknown It is a dead moon - place of the Legio Venitor fortress

M

Planet name Segmentum Sector Subsector System Population Notes
Malodrax Ultima Segmentum Unknown Unknown Unknown Unknown Former Fortress World belonging to the Iron Warriors Legion. The planet was completely destroyed by the Phalanx
Malvolion Unknown Unknown Unknown Unknown Unknown Destroyed by Tyranids
Mardun X Unknown Unknown Unknown Unknown Unknown Exterminated by the Doom Warriors Chapter
Mataras IV Segmentum Ultima Jericho Reach Unknown Unknown Unknown Was subjected to the Exterminatus due to the xenos contamination
Medusa V Ultima Segmentum Unknown Unknown Unknown Unknown Former Mining World. Destroyed by Warp storm
Megyre Ultima Unknown Unknown Unknown None Former Forge World. Was destroyed by Hive Fleet Jormungandr
Midgardia Segmentum Obscurus Unknown Unknown Fenris System None Former Death World. Destroyed with Exterminatus by Logan Grimnar due to Nurgle daemonic incursion
Miral Ultima Segmentum Unknown Unknown Unknown None Previously Death World. Eaten by Tyranids
Moirae Unknown Unknown Unknown Unknown None Former Forge World. Was blasted apart by a Fleet from Mars
Moloch I Unknown Unknown Unknown Unknown None Former Mining World. Was destroyed by Tyranids
Moloch II Unknown Unknown Unknown Unknown None Former Mining World. Was destroyed by Tyranids
Morrigar Ultima Segmentum Unknown Unknown Unknown None Awakening Necrons killed all the population
Morshanna Unknown Unknown Unknown Unknown None Previously Maiden World. Was destroyed in 899.M41 by a splinter fleet of Hive Fleet Gorgon
Mortain Unknown Unknown Unknown Unknown None It was destroyed by the Red Corsairs
Morwen VI Segmentum Obscurus Calixis Sector Adrantis Subsector Morwen System None The question of investigation of the planet is deciding by the Adeptus Mechanicus

N

Planet name Segmentum Sector Subsector System Population Notes
Naogeddon Unknown Unknown Unknown Unknown Unknown An arid world that supported no life
Nebrus IX Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus due to Plague Zombies infection
Novgorod Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus due to dual danger of the Plague of Unbelief and the Ork invasion
Nuceria Ultima Segmentum Unknown Unknown Unknown Unknown Purged by the Ultramarines
Nurth Ultima Segmentum Unknown Unknown Unknown None Planet turned uninhabitable by the work of Black Cube Chaos weapon

O

Planet name Segmentum Sector Subsector System Population Notes
Olympia Unknown Unknown Unknown Unknown Unknown Former homeworld to the Iron Warriors Space Marine Legion. Turned into a vast barren wasteland during the Horus Heresy
Okassis Ultima Unknown Unknown Unknown Unknown Former Cardinal World. Was eaten by Hive Fleet Kraken
Origo Unknown Unknown Unknown Origo System Unknown Became a Dead World for unknown reason. All population died.

P

Planet name Segmentum Sector Subsector System Population Notes
Palomar Unknown Unknown Unknown Unknown N/A Became a radioactive wasteland after Ark Mechanicus recovering
Parosa Ultima Segmentum Unknown Unknown Tarsis Ultra System N/A It was always a dead world
Pelucidar Segmentum Solar Armageddon Sector Armageddon Subsector Armageddon System N/A Due to falling on the planet of the space hulk, the Devourer of Stars, all citizens died
Phaenon Prime Segmentum Obscurus Unknown Unknown Unknown None The planet was smashed to fragments by striking of its moon on its surface
Phagir Segmentum Obscurus Calixis Sector Hazeroth Abyss Unknown N/A Former Agri World. Was ravaged by a genetic virus
Piety Unknown Unknown Unknown Unknown N/A Former Daemon World, former Shrine World. Subjected to Exterminatus by the Grey Knights
Porphetus Unknown Unknown Unknown Unknown N/A Former Forge World. Eaten by Tyranids
Posul Tempestus Unknown Unknown Unknown None Former Adeptus Astartes Homeworld and Feral World. Destroyed by Tyranids
Praedis-Zeta Ultima Segmentum Unknown Unknown Unknown N/A Raided by the Necrons. Human population harvested
Prandium Ultima Segmentum Ultramar Unknown Unknown N/A Eaten by Tyranids
Prospero Ultima Prospero Sector Prospero Subsector Prospero System N/A Former Adeptus Astartes Homeworld. Destroyed during the Horus Heresy
Prosperon Unknown Unknown Unknown Unknown N/A Former Jungle World. Was destroyed by Tyranids

R

Planet name Segmentum Sector Subsector System Population Notes
Radnar Ultima Segmentum Unknown Unknown Unknown N/A Consumed by Hive Fleet Kraken
Rapture Tempestus Reductus Sector Unknown Unknown N/A Former Knight World, former Paradise World. Devastated by a splinter fleet of Hive Fleet Leviathan
Rebas Unknown Unknown Unknown Unknown None Former Hive World. Was invaded by the Chaos Space Marines and Daemons. Population was destroyed.
Rhoghon Unknown Unknown Unknown Unknown N/A After the planet suffered a Daemonic onslaught, detonation of the planet’s reactors and relics of the Dark Age of Technology, left the planet a blasted rad-zone
Rophanon Probable Segmentum Tempestus Unknown Unknown Unknown N/A Former Paradise World. Declared Exterminatus due to rebellion and Tyranid infestation

S

Planet name Segmentum Sector Subsector System Population Notes
Safehold Ultima Unknown Vidar Unknown N/A It was scoured of life in 926.M41 by the planetoid-sized Necron warship known as the World Engine
Saint Marduk's Bane Segmentum Tempestus Orpheus Sector Unknown Unknown N/A Former Hive World. All life was destroyed after the Orpheus Revolt in 921.M39
Salem Ultima Segmentum Unknown Unknown Unknown N/A Former asteroid-monastery. Ecosystem destroyed by monks before coming of the Hive Fleet Kraken
Shadowbrink Unknown Unknown Unknown Unknown Unknown Former Cathedral World. The planet was devastated by the Tyranids and by Daemonic forces
Shenlong Ultima Segmentum Unknown Unknown Unknown Unknown Subjected to Exterminatus because of the Word Bearers influence
Skopios Ultima Segmentum Unknown Unknown Unknown Unknown No native life forms
Sleef Segmentum Obscurus Calixis Sector The Periphery Unknown Unknown Uninhabited and dead planet
Sondheim V Unknown Unknown Unknown Unknown Unknown Former Imperium world, later it was subjected to Exterminatus because of the Tyranid and Daemon simultaneously insurrections
Sotha Ultima Segmentum Unknown Unknown Unknown N/A Former home world of the Scythes of the Emperor Space Marine Chapter. Was consumed by the Tyranids
Sovven Ultima Segmentum Unknown Corvus Sub-Sector Unknown ~1,000 Former Agri World. Crow's Eye Warp Storm devastated the planet, leaving only a handful of degenerate cannibalistic citizens
St. Josmane's Hope Segmentum Obscurus Cadian Sector Cadian Subsector Unknown N/A Former prison complex. Planet was destroyed due to insurrection of Chaos forces
Stalinvast Unknown Unknown Unknown Unknown N/A Former Hive World. Due to Genestealer infestation and coming the warp entity known as the Hydra the planet became the dead world
Stern’s Remembrance[2] Unknown Unknown Unknown Unknown (Formerly two billion of pilgrims
including officials and staff)/N/A
Former Ecclesiarchy world. All people were eliminated by the Crimson Slaughter Chaos Space Marines
Stygia Unknown Unknown Unknown Unknown 1 Former Knight World. All people were dead due to Daemonic incursion. The only survivor was the lone Knight Freeblade
Subiaco Diablo Segmentum Obscurus Belis Corona Sector Unknown Belis Corona System Unknown Former Hive World. Later Curse of Unbelief spread over all the planet
Sybari Ultima Segmentum Unknown Unknown Unknown None Former Fortress World. Consumed by Hive Fleet Behemoth

T

Planet name Segmentum Sector Subsector System Population Notes
Talon Ultima Segmentum Hodur Sector Unknown Unknown Unknown It was absorbed into Hive Fleet Leviathan under the direction of the Swarmlord in 997.M41
Tan Ultima Unknown Unknown Unknown Unknown Consumed by Hive Fleet Kraken
Tanakreg Unknown Unknown Unknown Unknown Unknown Also Civilised World. Devastated by the Word Bearers
Tanis Segmentum Obscurus Calixis Unknown Unknown Unknown Former Hive World. Due to coming a Tyrant Star all people died.
Tanith Segmentum Pacificus Sabbat Worlds Unknown Unknown Unknown Bombarded from orbit by the Chaos armada
Tarrenhorst Unknown Unknown Unknown Unknown Unknown Former Agri World. Subjected to Exterminatus due to Enslaver Plague
Tartoros Ultima Segmentum Unknown Unknown Cryptus System 30,000 (pre-destruction) Consumed by Tyranids
Teruxyne Segmentum Obscurus Calixis Unknown Unknown Unknown Quarantined World. Was stricken by the Sinners’ Plague
Tethris Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus after being overrun by the Tyranids
Thranx Segmentum Solar Unknown Unknown Unknown Unknown At least before the M36 anti-imperial rebellion, it was the Imperial Hive World. Later was subjected to Exterminatus.
Thrax Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus due to a Daemonic infestation
Threnos Segmentum Obscurus Calixis Sector Hazeroth Abyss Unknown Unknown There is no information whether the planet was uninhabited originally or become to be a dead world for some reason
Toil Unknown Unknown Unknown Unknown None Former Forge World. Was transformed to Daemon World by Perturabo
Toreus Unknown Unknown Unknown Unknown N/A Cleansed of Daemons by virus bomb Exterminatus
Truan IX Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus by Supreme Grand Master Azrael of the Dark Angels
Truub II Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus by the Doom Warriors
Truub III Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus by the Doom Warriors
Tybult[3] Unknown Unknown Unknown Unknown Unknown Subjected to Exterminatus by Inquisition of Ordo Malleus
Exterminatus executed by the Grey Knights
Tygress IV Segmentum Obscurus Calixis Sector Drusus Marches Unknown Unknown There is no information whether the planet was uninhabited originally or become to be a dead world for some reason
Typhon Primaris Ultima Korianis Subsector Aurelia Unknown Unknown Former Feral World, Jungle World. Was subjected to Exterminatus by the Ordo Malleus as a result of the xeno and daemonic incursions in the subsector
Tyran Eastern Fringe Unknown Unknown Unknown N/A The first known planet consumed by Tyranids

V

Planet name Segmentum Sector Subsector System Population Notes
Valedor (Duriel) Unknown Unknown Unknown Unknown None Former Cardinal World and Maiden World. Destroyed by Eldar and Dark Eldar because of a treat of absorbing by Hive Fleet Leviathan
Valos Ultima Segmentum Unknown Unknown Unknown N/A Absorbed by Hive Fleet Behemoth
Verdan II Unknown Unknown Unknown Unknown N/A All life was destroyed by Exterminatus
Verdrun IX Unknown Unknown Unknown Unknown N/A Was consumed by Tyranids
Victus Segmentum Obscurus Calixis Sector Unknown Modren’s Realm N/A Scorched ball of rock due to proximity to system's star
Vigil Segmentum Obscurus Calixis Sector Drusus Marches Unknown Unknown There were no people but Xeno Slaugth were destroyed there by the Storm Wardens

X

Planet name Segmentum Sector Subsector System Population Notes
Xin-Cyn Ultima Segmentum Jericho Reach Orpheus Salient Unknown Unknown Former Research Station. Eaten by Hive Fleet Dagon

Y

Planet name Segmentum Sector Subsector System Population Notes
Yorvith Ultima Segmentum Unknown Unknown Unknown N/A Destroyed by Hive Fleet Kraken in 993.M41
Yulan Ultima Segmentum Unknown Unknown Tarsis Ultra System None Consumed by Hive Fleet Leviathan

Z

Planet name Segmentum Sector Subsector System Population Notes
Zhoros Unknown Unknown Unknown Unknown Unknown Was the first homeworld of the Fire Hawks Space Marine Chapter. During the Wars of Apostasy in M36 Zhoros was firebombed by the Frateris Templars

Sources