Acedia - Acedia is a rare system in that it has three inhabitable satellites. The main planet, Acedia is a very large planet with a small population of 75 million. Although the planet is at a medieval level of technology, it is sometimes used to recruit for the Adeptus Militarum. It is protected by Fortress Mercia, a space station that monitors the planet. It's moon, Avaricia has a small medieval population of 1 million. Lastly, the planet Chastity is a Shrine world dedicated to training members of the Ecclesiarchy. It houses a population similar to that of Acedia, roughly 68 million.
Ahrimanes - This planet is currently controlled by the Eldar. However, it does have a small human population on a separate continent, which is spared by the Eldar amid threats of recriminations should something happen to them. One strange issue with the planet is that certain areas seem to be inhabited by ghosts.
Andredoria - This planet is largely a farming planet. It is subject to frequent earthquakes and tremors, which means that most of the planet's population is quite hardy, but most structures on the planet are small in case of collapse. This planet is noted for its loyalty to the Imperium.
Arjuna - Arjuna is an uninhabited world that is used as a naval base for the Imperial Fleet and is home to some minor mining ventures.
Articerus - Articerus is a forbidden planet. To visit this system is to invite condemnation by the Imperium. One Imperial satellite hovers over the planet, sending out a warning signal of danger; not merely in the languages of the Imperium, but in several alien languages as well.
Ascalon - Ascalon is one of the planets discovered upon the exploration of the Hendrik's Anomaly. The planet is a complete mystery, as there is no population on the planet, despite it being habitable. Furthermore, there are intact cities and fortresses all over the planet, completely empty of life.
Azar - Although Azar appears to be a completely normal civilized world, it houses a Grey Knight's outpost. Recently, it was invaded by Chaos forces from Elsinore who were soundly defeated, having not expected the tenacity with which it would be defended and assisted. The Chaos forces were heavily outmaneuvered and hastily retreated from the planet. The secret of the Grey Knights was hidden by a subterfuge where they bore the banners of other, assisting Astartes chapters.
Bludmongar - One of the Ork held planets in the area. While the others are affected by civil wars, Bludmongar is run by the Blood Axes. The Ork clan has managed to avoid the infighting affected by the other clans by creating a Kouncil, which is run by Elektors. While the other Orks scoff at this humie-style government, the Blood Axes continue to get stronger.
Borgias - Borgias is a paradise world which bears the name of the Navigator clan which rules it. They are very private in their affairs. There are rumors that they are owners of powerful Archeotech, as a massive Ork invasion was once spotted by traders passing through the system. When Imperial relief forces arrived, they found no trace of the invasion save the debris of the Ork ships. They were informed that their assistance was not necessary.
Branday - This is an agricultural planet. Although it only has a population of a few million, it has been more heavily defended by the Imperial fleet, as the planet has been victim of many Dark Eldar raids. The importance of Branday's foodstuffs to other planets in the sector has caused the Administratum to increase the security.
Carthago Nova - This planet seceded from the Imperium over 200 years ago. The governor of the planet declared the planet independent and immediately allied himself with aliens from nearby sectors, and the planet is a haven for inter-species activity. While some Imperials call for the planet's destruction, so far, they have evaded retribution. Some speculate that Carthago's destruction has been stayed by the hands of Rogue Traders and Inquisitors who use its cosmopolitan population to spy on the numerous enemies of the Imperium.
Centarus - Centarus is a small planet, but has a high population for its size, resulting in it being classified as a Hive World. Other planet's in the system include: Gynos - An agricultural planet, Kymeros - A mining world, and Minotaurus, a tiny planet which is used as a penal colony.
Ceylon - Ceylon is a large planet completely covered by water. The people who live on the planet live either on mobile ships, or in underwater cities. The people on Ceylon are notorious for being the wealthiest people in the sector, as they ship both water and jewelry across the sector.
Colossus - Colossus is one of the two Forge Worlds in the subsector. The larger of the two, it provides weapons for the multitude of Imperial forces in the area.
Corsica - Corsica is an unfortunate planet. Home world of the Imperial Eagles chapter, it was garrisoned by forces of the Inquisition in the wake of mysterious problems with that chapter. In the absence of the marines, the planet has largely fallen to a Chaos invasion from Elsinore. A few loyalists still hold out, hoping for relief.
Cretacion – Cretacion is the first planet accessible through Hendrik’s Anomaly. It is a Chaos Forge World. It is the staging planet for all invasions of the Caliburnus sector. It is an extremely large planet with heavy volcanic activity. It is rich in minerals, and the overlords of the planet have a tremendous amount of political power, and lord it over the other Chaos forces who rely upon their resources.
Crowe–Crowe is a medieval world that has been largely left to its own devices. Although it has been visited by the Imperium several times, very few of the planet’s inhabitants are aware of the Imperium’s existence. The people of Crowe live in mysterious alien structures of an extinct race that died out aeons ago.
Dracul – Dracul has recently been conquered by the Tau, and some of them plan on colonizing it. The planet had seceded from the Imperium in recent history, and was led by nobility who were bargaining with Chaos forces in the sector. It is rumored that the Tau made a bargain with some Imperial forces for amnesty if they solved the ‘problem’ of Dracul. The former rulers of the planet have fled to Elsinore and plot to reclaim their birthright.
Prior to its capture by the Tau, the planet was dichotomous in its technology. The rulers of the planet benefitted from science at the tech level of other Imperial planets, while the commoners were kept in a medieval civilization. The planet has many odd kinds of flora which have been known to produce odd effects on the people who live there.
Elsinore – This planet is the home planet of the Reapers Chaos Space Marines. The planet had been conquered several hundred years before when the ruler of the planet was assassinated. At first, the Imperium supported the assassination as there appeared to be evidence of corruption. However, the ‘liberator’ of the planet was an agent and proceeded to sacrifice portions of the population to the dark gods. The subsequent demonic invasion cleared loyalists from the planet, and then the Reapers moved in to settle the lost planet.
Farstone – Prior to its rediscovery, Farstone was a prison planet. It was a place used to store criminals and process them in to Astra Militarum penal battalions. Farstone was a habitable but barren planet, making it ideal for these purposes. The planet contains many fortresses and underground facilities. Although the former inhabitants of the planet have long-since died and the structures are empty, after its rediscovery, the Ironmen chapter of Space Marines has given extraordinary effort to reclaiming it. This has led to the belief that there is more to the planet than merely its history as a prison facility.
For-morCraftworld – Although the Formorians are viewed as a lesser evil by the Imperial forces in the subsector and are largely left to their own designs, the truth is actually much more sinister. The reason the Imperium is focused on other threats is because of the actions of the Formorian seers. The Eldar actively use their precognitive abilities to determine possible futures, and then manipulate events to cause any outcome which puts the Imperium on the defensive. At best, this is defensive measure to keep the Imperium from focusing on the Eldar, and at worst, a manipulative genocide.
Gotterheim–Also known by the nickname ‘Midway’, this planet is between the Caliburnus and Armageddon sub-sectors. As a lifeline of the Imperium, it is a heavily defended planet. The space traffic in the area is intense, and the planet is so consistently busy that there are two groups of people on the planet who almost never encounter each other. Half of the planet’s population works during the day, and then are relieved by the night shift workers.
The planet is ruled by an oligarchy run by the corporate overlords who run the businesses. Although there is some tension between the ruling factions, they cooperate because the Administratum will brook no dissent on a world so vital to the Imperium’s survival.
Gromril – The smaller of the two Forge Worlds in the Caliburnus sub-sector, it was subject to a Tyranid invasion which was destroyed, as the world proved to be too heavily armed and armored to take. The planet has an unusual alien structure within an extinct volcano on the planet. It is assumed that it is a Necron structure and the object is surrounded by fortifications to keep people out of the area, and to keep whatever might live there in it.
Hasdrubal – This is not actually a planet, but a moon. It has an orbit, and although Hasdrubal revolves, it does not rotate around its mother planet, leaving it in an almost perpetual state of night. Scientists are fascinated with this planet due to its odd movement (or lack thereof) and the unique flora that grows on the planet as it apparently does not need sunlight to survive.
Hattusas – One of the planets accessible through the Hendrik’s anomaly, it at one point must have hosted a great alien civilization. However, these ancient people have long since disappeared, leaving only ruins of their culture. This planet has become a hotbed of conflict as its rediscovery has caused numerous groups to invade the world in search of artifacts.
Hendrik's Anomaly – This is a minor warp storm. For centuries it has been seen as a menace as Chaos forces continually emerged from it to invade the sub-sector. However, recent Imperial expeditions have managed to pierce through the storm and have discovered that it leads to a section of space in UltimaSegmentum.
Hive Fleet Tiamat – This is a branch of Hive Fleet Leviathan. It has successfully taken over two planets in the sub-sector and has threatened twice as many. Some Imperial forces have attacked the fleet directly, attempting to stall any future invasions.
Hybrasil – At one point Hybrasil must have been a paradise planet. It is a temperate planet with ideal conditions to support life. However, at some point it was abandoned. Although there is evidence of previous habitation, most of the buildings have become overgrown with plants.
Iberia–This planet is a desert world under the control of the Eldar. It was recently conquered by them, as they took advantage of the Imperial armies diverse deployments. The human population of the planet was spared and evacuated when Inquisitor Lord Iehovar threatened to launch cyclonic torpedoes at the planet if they were massacred.
Invidia – This planet was evacuated by an Inquisitor when the Tyranids overran it. There is still a polar base that holds out against the Tyranids, and it is there to hold them up and delay any future attacks from them.
Johannus – Johannus is the capitol of the sub-sector. The planet is home to numerous Administratum officials, the Inquisition, and even a Marine chapter and Sororitas enclave base there. All of the war planning of the Imperium occurs in this system.
Kabullah – This might just be the most troubled planet in the sub-sector. The population rebelled against the Imperium a decade ago, and the uprising was put down, and the offenders purged. Recently, Chaos forces have attempted to take the planet again, and war has been renewed with interest. Several factions are fighting for different reasons. The Orks and the Eldar are fighting for control of gate/teleportation technology. The Imperium is fighting Chaos for control, and the Dark Eldar are taking opportunity of the chaos to capture slaves for their gladiator arenas.
Kamellon – Kamellon is a relatively large red planet. It is heavily cratered and is pock marked by asteroid impacts. Although asteroids have ceased to bombard the planet, there is little water on the planet, and its arid environment means its appearance has changed little. The rich people live in cities similar to paradise planets. The rest live in apartments surrounding the cities. Its gem/mineral trade make it one of the wealthiest planets in the sub-sector.
Mahdi – A desert planet, it has recently become overrun by Tyranids. Although a small portion of the planet is still held by Imperial forces, it is considered lost. Fortunately for the Imperium, the Tyranids have not been able to farm the resources of the planet yet, as they are fighting an Ork counter-invasion, and there are Necrons below the surface that occasionally emerge to attack the trespassers.
Mons Grapius – One of the planets accessible through Hendrik’s Anomaly, this is a mountainous planet. Although the planet is inhabitable, it is not very conducive to travel that does not involve flight.
Montgisard – Homeworld of the Ironmen Space Marines.
Nearvanus – Restricted Planet. Inquisitorial Access only.
Neutra II – A medieval planet and the new recruiting world for the Relictors Space Marines. This planet’s status is not known to a great many people and the Relictors are trying to keep a low profile since they became officially condemned. The planet has one large human settlement, and the wilderness is the domain of many different abhumans and has some demonic contamination.
Noah VII – This is a Knight World. At the current moment, it is fighting a sustained invasion from Elsinore. The war has gone on for ten years, and many wonder why neither side has managed to conquer the other. The Knight families complain that the planet is not being sufficiently reinforced, while the Sector’s government claims that the war is unnaturally extended by the infighting between the families. Still others suggest that the war is deliberately being extended for some unknown reason…
Nod – Although Nod is inhabitable, it is a very nondescript planet, and is considered a dead world.
Ny-Fenris – Ny (Nu) Fenris is a small low-tech planet that was rescued by the Space Wolves. The Wolves claimed it as part of their empire and have been known to use it as a recruiting world. As a result, there is usually a Space Wolves presence in the sub-sector.
Or'glok – This is an Ork world and the headquarters of Waaagh! Glok. However, no one should become attached to the name, as Ork leaders are routinely killed on this planet, either through duels, or through assassination. The assassinations are the result of Imperial machinations, as they attempt to keep the warbosses fighting for control. So far, this strategy has been successful, and the Orks are fighting each other and not invading the Imperium.
Oriskany – This is a naval planet going through the first stages of terraforming. At the current time, the only inhabitable area is near the generators. This supports a large city of 9 million people, mostly naval personnel. This outpost has been attacked by Dark Eldar mercenaries in recent history.
Rathlox – This is part of the Ork conclave in the west sub-sector. A barren planet, it is home to numerous Speed Freeks cults.
Rhea - Rhea is a large and lush planet. Similar to the other planets in the Hendrik Anomaly, it is empty of any real population and was apparently abandoned a long time ago for an unknown reason. Adeptus Biologis researchers have taken a great interest in this planet and hope to categorize its life before the inevitable colonization.
Sarcus–Uninhabited world. No known natural resources.
Saxneath - This is the homeworld of the Swordbrothers Space Marines. They recruit from a medieval planet and deliberately keep the populace fractious so they have plenty of potential recruits with built-in fighting ability.
Sheol – This planet is an anomaly as it is a Daemon World that exists outside of a warp storm. The surface is inimical to life, as the terrain seems to alter itself in response to intruders. Indeed there is a suspicion that the planet itself is a living entity. Most factions keep clear of this solar system.
Sturmrok – A Death World, Sturmrok has atmospheric issues that make life above the surface extremely dangerous. The air is filled with sulfur, the winds blow rocks and debris at extremely high speeds, and the temperature of the planet is positively frigid. However, the underground consists of a labyrinth of tunnels and it is here where the people of Sturmrok have entrenched themselves in order to survive.