Dead World
A δ-class (delta class) or Dead World is a world classification given by the Imperium.
These worlds are often airless and completely sterile, 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 | 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 | Solar | Unknown | Unknown | Unknown | N/A | Became the Dead World due to series of cataclysms and wars |
| Amun'an Morrus | Obscurus | Calixis | Unknown | Unknown | Unknown | Destroyed by Exterminatus during the Angevin Crusade |
| Andronicus Prime | 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 | Obscurus | Scyllan Sector | Atreyan Subsector | Kharon System | None | Entire population of the planet has been destroyed under mysterious circumstances. |
| Artos-Rho IV | Unknown | Unknown | Unknown | Unknown | None | Former Forge World of the Deuterium Stars trio. Destroyed during the Horus Heresy.[6] |
| Assyri | Unknown | Unknown | Unknown | Unknown | None | Population destroyed by Eldar |
| Auxesia | Unknown | Unknown | Unknown | Unknown | None | Former Civilised 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 | 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 | Jericho Reach | Unknown | Unknown | Unknown | Former Shrine World. Destroyed by the Tyranids of Hive Fleet Dagon |
| Belis Corona | Obscurus | Belis Corona Sector | Belis Corona Subsector | Belis Corona System | Unknown | No life on the planet. Great orbital docks |
| Belissar | Ultima | 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 | 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 | Tempestus | Unknown | Unknown | Unknown | None | Also Necron Tomb World. Imperial deep-range outpost was destroyed by Necrons and the planet has been quarantined |
| Cartheginus | Unknown | Unknown | Unknown | Quintillus System | None | Former Refinery World. Population destroyed by Imperium for supporting of Horus |
| Chemos | Ultima | 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 Civilised 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 | 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 | 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 | Unknown | Unknown | Unknown | None | The planet was purged by orbital bombardment from the Sons of Horus during the Horus Heresy |
| Damnos | Ultima | 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 | Unknown | Unknown | Unknown | None | Former Industrial World, former Desert World. Subjected to Exterminatus due to Chaos corruption |
| Doton | Ultima | Unknown | Unknown | Unknown | None | All life on the planet was eradicated by unknown force |
| Dunen II | Ultima | 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 | Solar | Unknown | Unknown | Unknown | N/A | Former Agri World. Destroyed by Ork Warboss 'Eadcrumpa |
| Eireius | Solar | Unknown | Unknown | Unknown | None | Former Agri World, former Jungle World. Eaten by Hive Fleet Leviathan |
| El'Phanor | Solar | Unknown | Unknown | Unknown | None | Was scored by Abaddon the Despoiler during 4th Black Crusade in 001.M34 |
| Eldritch | Ultima | 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 | 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 | Unknown | Unknown | Unknown | Unknown | Burned by the Dark Angels after the Faze V Uprising |
| Fell Core | Ultima | Unknown | Unknown | Unknown | None | Former Hive World. Subjected to Exterminatus due to Tyranid infestation |
| Forgefane | 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 | 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 |
| Graia | Ultima/Tempestus | Unknown | Unknown | Unknown | None | Former Forge World. Devoured by the Hive Fleet Kraken |
| Grangold | 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 | 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 | Unknown | Unknown | Moran system | Unknown | Was destroyed by Hive Fleet Kraken |
| Hekarth V | Unknown | Unknown | Unknown | Unknown | None | Eaten by Hive Fleet Leviathan |
| Hesperax | obscurus | Unknown | Unknown | Unknown | None | Destroyed by the Deathwatch Kill Team due to the Dark Eldar incursion |
| Holda | Ultima | 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 | 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 | 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 | Unknown | Unknown | Unknown | Unknown | Former Tau Sept. Harvested by Necrons |
| Kataris | Obscurus | Unknown | Unknown | Unknown | Unknown | Former Agri World. Subjected to Exterminatus due to Daemonic incursion |
| Khorion IX | 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 | Obscurus | Calixis Sector | Markayn Marches | Klybo System | None | |
| 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 | 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 | 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 | Obscurus | Calixis Sector | Golgenna Reach | Lathe | Unknown | It is a dead moon - place of the Legio Venator fortress |
M
| Planet name | Segmentum | Sector | Subsector | System | Population | Notes |
| Magnax | Unknown | Unknown | Unknown | Unknown | None | Former Forge World of the Deuterium Stars trio. Destroyed during the Horus Heresy.[6] |
| Malodrax | Ultima | Unknown | Unknown | Unknown | Unknown | Former Fortress World belonging to the Iron Warriors Legion. 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 | Ultima | Jericho Reach | Unknown | Unknown | Unknown | Was subjected to the Exterminatus due to the xenos contamination |
| Medusa V | Ultima | 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 | Obscurus | Unknown | Unknown | Fenris System | None | Former Death World. Destroyed with Exterminatus by Logan Grimnar due to Nurgle daemonic incursion |
| Miral | Ultima | 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 | 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 | 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 | Unknown | Unknown | Unknown | Unknown | Purged by the Ultramarines |
| Nurth | Ultima | 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 |
| Palathrix[5] | Unknown | Unknown | Unknown | Unknown | N/A | |
| Palomar | Unknown | Unknown | Unknown | Unknown | N/A | Became a radioactive wasteland after Ark Mechanicus recovering |
| Parosa | Ultima | Unknown | Unknown | Tarsis Ultra System | N/A | |
| Pelucidar | 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 | Obscurus | Unknown | Unknown | Unknown | None | The planet was smashed to fragments by striking of its moon on its surface |
| Phagir | Obscurus | Calixis Sector | Hazeroth Abyss | Unknown | N/A | Former Agri World. Was ravaged by a genetic virus |
| Phanox | Unknown | Unknown | Unknown | Unknown | N/A | A world where eight Moebian regiments and six Hektaon regiments did battle with the Knights of Blood Chaos renegades. The renegades were driven off but the destruction wrought resulted in the world's reclassification as a dead world.[1] |
| 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 | Unknown | Unknown | Unknown | N/A | Raided by the Necrons. Human population harvested |
| Prandium | Ultima | 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 | 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 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 | Tempestus | Orpheus Sector | Unknown | Unknown | N/A | Former Hive World. All life was destroyed after the Orpheus Revolt in 921.M39 |
| Salem | Ultima | 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 |
| Shadrac | Unknown | Unknown | Unknown | Unknown | None | Former Ice World. The planet was consumed by Tyranids |
| Shenlong | Ultima | Unknown | Unknown | Unknown | Unknown | Subjected to Exterminatus because of the Word Bearers influence |
| Skopios | Ultima | Unknown | Unknown | Unknown | Unknown | No native life forms |
| Sleef | 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 | Unknown | Unknown | Unknown | N/A | Former home world of the Scythes of the Emperor Space Marine Chapter. Was consumed by the Tyranids |
| Sovven | Ultima | 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 | Obscurus | Cadian Sector | Cadian Subsector | Unknown | N/A | Former prison complex. Planet was destroyed due to insurrection of Chaos forces |
| St Capilene | Unknown | Unknown | Unknown | Unknown | N/A | Former Missionary World. Eaten by Hive Fleet Leviathan |
| 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 | Obscurus | Belis Corona Sector | Unknown | Belis Corona System | Unknown | Former Hive World. Later Curse of Unbelief spread over all the planet |
| Sybari | Ultima | Unknown | Unknown | Unknown | None | Former Fortress World. Consumed by Hive Fleet Behemoth |
T
| Planet name | Segmentum | Sector | Subsector | System | Population | Notes |
| Talon | Ultima | 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 | Obscurus | Calixis | Unknown | Unknown | Unknown | Former Hive World. Entire populace killed by the coming of the Tyrant Star. |
| Tanith | 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 | Unknown | Unknown | Cryptus System | 30,000 (pre-destruction) | Consumed by Tyranids |
| Teruxyne | 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 | 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 | 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 | 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) | Tempestus | Unknown | Unknown | Valedor System | 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 | 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 | Obscurus | Calixis Sector | Unknown | Modren’s Realm | N/A | Scorched ball of rock due to proximity to system's star |
| Vigil | 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 | 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 | Unknown | Unknown | Unknown | N/A | Destroyed by Hive Fleet Kraken in 993.M41 |
| Yulan | Ultima | 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 |
| Zozan Tertius[4] | Ultima | Unknown | Unknown | Zozan System | Unknown | Was subjected to Exterminatus by Blood Angels warfleet due to Hive Fleet Leviathan expansion just before the Devastation of Baal in M42 |
Sources
- 1: Warhammer 40,000 3rd Edition Rulebook, pg. 115
- 2: The Ascension of Balthasar (Audio Drama), Chapters 4, 6
- 3: The Emperor's Gift (Novel), Chapter 21
- 4: The Devastation of Baal (Novel), Chapter 5
- 5: Codex: Adeptus Custodes (8th Edition), pg. 42
- 6: Codex: Imperial Knights (8th Edition), pg. 66