Region Outer Rim Territories
Sector Seswenna sector
System Eriadu system
Suns 1: Eriadu
Orbital position: 4
Moons 1
Grid coordinates M-18
Trade routes Hydian Way, Lipsec Run, Rimma Trade Route, Yankirk Route
Rotation period 24 standard hours
Orbital period 360 local days
Class Terrestrial
Diameter 13,490 km
Atmosphere Type I (breathable)
Climate Polluted
Gravity Standard
Primary terrain Industrial cityscape, waste zones
Surface water Seas
Immigrated species Humans
Primary language(s) Galactic Basic Standard
Government Imperial governorship
Population 22 billion (86% Human, 14% other)
Demonym Eriaduan
Major cities Eriadu City (capital), Phelar, Old Town Factoryville
Major imports Foodstuffs, medicinals, lommite ore,
Major exports Computer technology, manufacturing, textiles, droids

Eriadu—“The Coruscant of the Outer Rim”—was an industrial world; heavily populated and a major interstellar trade centre. It linked the Core Worlds with the Rim via several major hyperspace routes, including the Hydian Way. The heavy trade revenues left the once backwater planet one of the biggest centers of corporate activity in the galaxy. Instead, local business owners and nobles took home a majority of the profit, leaving the cities mired in smog whilst their masters enjoyed carefully maintained country estates and climate controlled public plazas.

Eriadu was the primary world in the Seswenna sector, and one of the Outer Rim's most active trade centers. Eriadu served as the capital of the Seswenna sector and was situated at the intersection of the Rimma Trade Route, the Hydian Way, the Lipsec Run, and the Yankirk Route.

Possessing a breathable atmosphere, standard gravity, and a single moon, Eriadu was a gray factory world of rugged landmasses dotted with forests and narrow seas whose terrain included industrial cityscape and waste zones. Eriadu was orbited by one natural moon, small shipyards, and several orbital habitats.

Eriadu was controlled by the Galactic Empire as well as the home of Grand Moff Tarkin and his family. In the years before the Galactic Civil War, Eris Harro, HoloNet News Bureau Chief held office on the planet.

Major cities on Eriadu included its capital, Eriadu City, Phelar, and Old Town Factoryville.


Eriadu's climate was polluted and an orange haze appeared in its lower atmosphere; the world was dominated by heavy industry, and toxic by-products spewed from numerous unregulated factories fouled its air, land, and sea. Most of the inhabited regions on Eriadu were heavily industrialized with blocky, utilitarian architecture. The advanced waste disposal systems, atmosphere scrubbers, and aquifer purifiers that were used on most prosperous worlds were absent on Eriadu.

Eriaduan men tended to wear turbans and beards while women were veiled. Notable Eriaduans included the Tarkin family which played a role in the history of the Galactic Republic and the Galactic Empire. The Eriaduan accent was distinctive, and was said to be "more Core than Core".

Subtle Xenophobia

Humans comprised 86% of Eriadu's population of 22 billion. A significant slave population of nearly three billion was present on Eriadu during the time of the Galactic Republic and the Galactic Empire. Many Eriaduans were Humanocentric.

Eriadu’s slave population numbered three billion non-humans, not including indentured servants. Even those who weren't slaves toiled in factories or on the orbital shipyards for minimal pay by Core World standards.

Still, most were satisfied with their state, or at least content to do nothing. They ignored the smoke of the factories and the beggars in the streets, focused instead on getting through the day and supporting their families.


Eriadu Manufacturing, the largest employer on the planet, was by far the greatest polluter, and its processes were directly responsible for much of the environmental damage inflicted on the planet's ecosystem. The rapid industrialization of Eriadu drove most of its native species into extinction.

In spite of its pollution issues, Eriadu was an active hub of trade and government in the Outer Rim Territories. Eriadu imported foodstuffs, medicinals, and lommite ore, and exported computer technology, manufacturing, textiles, and droids.

Organic Labor

Although several droid manufacturers were present, droid labor was uncommon on Eriadu; despite this, at least one EV-series supervisor droid that had been equipped with an MDF motivator instead of the standard EV motivator was used on Eriadu, where, as a result of sadism induced by the MDF motivator, it had the feet of 160 droids melted to a factory floor to prevent them from leaving their workstations.


Eriadu is primarily a smoggy, urban sprawl of factories, cityscapes, and waste zones along rugged landmasses dotted with forests and narrow seas. However, there are some few carefully maintained country estates and climate controlled public plazas.

Eriadu City

Eriadu City, located in the world's southern hemisphere, was the capital and primary urban center of Eriadu and the Seswenna sector, as well as the site of most of the heavy industry carried out on the world.

It contained the Seswenna Sector Bank, Seswenna Hall, the headquarters of the Eriadu Free HoloDaily, the private mansions of the sector's governor and lieutenant governor, and the governor's palace.

Seswenna Hall
Seswenna Hall was a large civic center in Eriadu City. It was built to look similar to the Senate Building on Coruscant.

In 33 BBY, the hall was the location of the disastrous Eriadu Trade Summit. The summit was successfully infiltrated by members of the Nebula Front under the direction of their extremist leader Havac, killing all but one of the members of the Trade Federation Directorate.

Seswenna Sector Bank
The Seswenna Sector Bank was a bank headquartered in Eriadu City on the planet Eriadu.

Eriadu Spaceport
Eriadu Spaceport was the spaceport serving Eriadu City on the planet of Eriadu. New arrivals were required to pass through Eriadu Customs and Immigration, and many vessels were subject to search by customs and immigration officials.

Orrineswa River
Orrineswa River was a river on Eriadu. Eriadu City sprawled inland along the mouth of the river.

Bay of Conquest/Ja-Phelar Bay

During the Old Republic, the Bay of Conquest was a sea located between Phelar city and the Ja highlands on the planet Eriadu. After the rise of the Galactic Empire, it was renamed as Ja-Phelar Bay.

Phelar Floe

Phelar was a city on the planet of Eriadu containing a large spaceport.

Eriadu Manufacturing Shipyards
The Eriadu Manufacturing Shipyards were situated near Phelar Port, alongside the eastern banks of the Phelar Floe. The shipyards' main product was civilian repulsorlift and interstellar craft.

The shipyards were considered to be on par with the shipyards at Sluis Van, roughly generating the same output capacity. Although the Eriadu Manufacturing Shipyards were not as impressive as the Kuat Drive Yards or the Sienar Fleet Systems shipyards, the Eriadu Manufacturing Shipyards were still a financially viable interest and had become well-known for their high-quality production.

The Eriadu Manufacturing Shipyards was financed by members of House Valorum. The shipyards were divided into several primary facilities: the administrative offices located atop Ja Knoll, and the manufacturing facilities located close to the Bay of Conquest. Major thoroughfare routes connected the shipyards to central Phelar Port, while most of Eriadu's heavy industries were conducted in Eriadu City. Millions of laborers were employed by Eriadu Manufacturing to work in the foundries and assembly lines. Although slavery was outlawed by the Galactic Republic, the law was not enforced in the Outer Rim Territories. Thus, nearly half of the laborers at the shipyards were slaves. This practice continued after the rise of the Galactic Empire, as Galactic Emperor Palpatine encouraged the enslavement of non-Humans.

Phelar Port
Phelar Port was a spaceport located in the city of Phelar, on the planet Eriadu situated alongside the Phelar Floe. It contained the Eriadu Planetary Security Launchport and the main facilities of Eriadu Manufacturing. Phelar Port was the most notable spaceport on Eriadu and in the entirety of the Seswenna sector. Like most inhabited regions of Eriadu, Phelar Port was a gloomy, heavily industrialized region that featured blocky, utilitarian architecture and buildings.

Having been a popular transportation hub for centuries, Phelar Port saw increased recognition and fortune in the last decades of the Galactic Republic due to the rise of Trade Federation, Corporate Alliance, military, smuggler, and private venture traffic in the region. Although crime rates began to increase at the Port, the EPS's presence helped keep individuals in line. The Jedi Order established a starfighter base at this port, hoping to bolster security in the Seswenna sector. The spaceport was administrated by the Republic Navy and heavy policed by soldiers of the Republic, until the rise of the Galactic Empire which saw stormtroopers replace Republic soldiers.

Eriadu Planetary Security Launchport
The Eriadu Planetary Security Launchport was a high-security annex of the Phelar Port on Eriadu.

Phelar Floe
The Phelar Floe was a name for the rivers and streams filled with ice on Eriadu that flow into the Bay of Conquest. Where the rivers flowed into the bay, they were caked with pollutants from the planet's factories and other industry, which caused there to be little aquatic life in the area.

Old Town Factoryville

Old Town Factoryville was a heavily industrialized, urban area on the planet Eriadu.

Flora & Fauna

The rapid industrialization of Eriadu drove most of its native species into extinction; the Eriaduan rat, which thrived in the new environment, was one exception.

Eriaduan rats (or Eriaduian rats) were brown, six-legged vermin indigenous to Eriadu, but also found on Koros Major. The rat was one of the few native species to escape extinction during Eriadu's industrialization, outliving most of the species that preyed upon it. The rats gave birth in huge litters, and with no predators to keep them in check, they multiplied at a vastly accelerated rate as Eriadu became more urbanized and polluted. They were vicious scavengers. Outside their territory, they were solitary and timid. Inside their territory, they were known to attack in packs of dozens or hundreds, regardless of the size of the prey. The rat's bite was not naturally toxic, but because of the environment in which they lived, it could carry numerous poisons and could be lethal, especially to Mon Calamari, who had a strong susceptibility to the toxins. They can grow up to a quarter of a meter in length, not including their tail, and can weigh as much as 5 kg.

The flow-mollusk was a native species of the oceans of Eriadu. When the Quintad begun to industrialize the planet the acidic oceans dissolved their shells, leading the species to extinction.

The septoid, or Ja Field septoid, was a seven-legged insect indigenous to Eriadu. Septoids were fearless pests that survived centuries of attempts to exterminate them, only to adapt and thrive once more. Their exposure to the Eriaduan global pollution only seemed to make them hardier and more numerous, hence the Eriaduan expression 'tough as a septoid.' Its central thorax contained its head and eyestalks, as well as two sets of venom-less fangs. Its seven legs radiated outward in such a way that the septoid had no true front or back. These legs were made of serrated chitin, and made a distinctive sound when the septoid walked on hard surfaces, such as duracrete.

The WED-15 droid series was named and somewhat patterned after the septoid.


Eriadu has a long history reaching back to the early days of galactic colonization. The planet had originally been on the Eriadu Bypass until the Hydian Way was remapped to run through Eriadu (reflecting economic realities) rather than Seswenna. It was an important launch point for ships headed to the Moddell sector, such as the colony ship Free Enterprise in 130 BBY.



Eriadu fell within space that had been widely explored by the Galactic Republic by the time of the Jedi Civil War and was within Sith-controlled space during the New Sith Wars. Eriadu was known for delicate shellwork jewelry prior to the arrival of the Quintad, an oligarchy of five powerful families of Corulag ancestry, around 900 BBY. Under the guidance of the Quintad, who sought to transform the world into "the Coruscant of the Outer Rim," Eriadu became a manufacturing center with prestigious shipyards. Eriadu also became a rival of the noble houses of the Senex and Juvex sectors, and around 700 BBY, the houses annexed a number of systems that became known as the Ninth Quadrant in an effort to guard against Eriadu's influence.

Around 130 BBY, the colony ship Free Enterprise departed from Eriadu, carrying several hundred Jinda and Tulgah settlers, before vanishing on its way to Kuna's Eye in the Moddell sector.

Clone Wars Era

After retiring from the Republic Outland Regions Security Force to assume a political position on his homeworld, Eriadu native Wilhuff Tarkin won the office of lieutenant governor of Eriadu. Ruling from an ostentatious coastal estate, he quickly immersed himself in Eriadu's political and economic spheres. Tarkin arranged a competition between Lommite Limited and InterGalactic Ore in an effort to keep Eriadu's shipbuilding industries supplied with lommite, but when the two companies raced to deliver their ore to Eriadu, their barges were sabotaged and crashed into each other. The talk show Essence was based on Eriadu by 23 BBY, and in 22 BBY, Eriadu network executives paid for Jonava Billane's transit to the Seswenna sector prior to a scheduled appearance by Billane on Essence.

Brigadier Gideon Tarkin served as Eriadu's Minister of Security by 22 BBY, when agents of Eriadu Customs and Immigration detained the Tandleroff's Trove while it was passing through Phelar Port and found 144 hailfire droids packaged within the independent starship. Eriadu served as the headquarters of the Eighteenth Army and as a forward position for the Galactic Republic during the Clone Wars due to the presence of significant Separatist forces in the surrounding sectors. The initial Republic defense force received reinforcements in the form of twelve Delta-7 Aethersprite starfighters moved to Phelar Port by the Jedi Council in cooperation with Brigadier Gideon Tarkin, and later skirmishes would result in still greater presence by the Jedi and the Republic military on Eriadu. Eriadu hosted a full fleet under the command of Brigadier Tarkin, who merged various planetary navies into "priority theaters" and launched them from Eriadu, and had become the primary Republic staging point for all battles in its quadrant by the time the nearby manufacturing center of Sullust seceded from the Republic in 21 BBY. Troops from Eriadu would also besiege worlds such as Sluis Van and Xagobah in the Praesitlyn theater.

Imperial Era


Galactic Empire
Wilhuff Tarkin was granted command of the Seswenna sector upon Palpatine's restructuring of the galactic government, and as a Moff, Tarkin established his administration on Eriadu and made it the sector's capital. Tarkin's decision took advantage of the system's industrial, commercial, and strategic importance and provided a semblance of Core Worlds culture for Imperial and noble representatives from Coruscant who had been posted there. Under Tarkin's rule, Eriadu's manufacturing grew, its exports of technology increased, and corporations with interests there thrived. Tarkin directed the Western Reaches Operation from Eriadu in 17 BBY, and after the campaign concluded, Imperial pilot Shea Hublin was given a marquisate on Eriadu, where he married Eris Harro, the heiress of one of the Quintad Houses. After Emperor Palpatine promoted him to the position of Grand Moff, Wilhuff Tarkin took up residence on Eriadu full-time to oversee his new jurisdiction of Oversector Outer.

A sizeable underground resistance was present on Eriadu from the outset of the New Order, and after the signing of the Corellian Treaty in 2 BBY, the group became a formal part of the Alliance to Restore the Republic. Due to the threat of Imperial reprisals, however, Rebel agents merely used Eriadu as a base of operations for off-world activity; the large volume of commercial starship traffic allowed insurgents to travel between Eriadu and other locations within the Seswenna sector and other major ports around the galaxy with relative ease. Some time prior to the Battle of Yavin, a Rebel Alliance strike team attacked Grand Moff Tarkin's personal shuttle near Eriadu in a failed attempt to assassinate Tarkin that nevertheless resulted in the liberation of a Mon Calamari slave named Gial Ackbar.

Upon Wilhuff Tarkin's death in 0 ABY, Ardus Kaine assumed his command over Oversector Outer and relocated its capital from Eriadu to Entralla.[32] Admiral Sander Delvardus refused to follow Kaine and fortified Eriadu, from which he controlled a portion of the Hydian Way[33] and moved Coreward to secure the Rimma Trade Route as far north as Yag'Dhul after the Battle of Endor.[34] Shea Hublin, who had also refused to accompany Grand Moff Kaine, aligned with Superior General Delvardus and his Eriadu Authority, and in 4 ABY, he led a squadron at Chelleya to repel Nagai raiders from Eriadu.[28] Delvardus soon fell out with the ruling families of Eriadu, who wanted him to defend their system's interests instead of positioning toward an invasion of the Core Worlds,[34] and the Eriadu Authority soon disintegrated.[35]

Eriadu remained within Imperial territory as late as the Thrawn campaign of 9 ABY[8] but eventually became a begrudging member of the New Republic due to economic considerations.[3] Slaves on Eriadu were freed during the ascension of the New Republic, severely harming the Eriaduan economy in the short term;[4] nevertheless, under the New Republic, Eriadu was a key economic power in the Outer Rim and an industrial and commercial center.[2]

Under the Galactic Empire, the Eriaduans kept non-Human slaves. Eriadu was also the most important Imperial drydock.

The planet was the homeworld of Grand Moff Wilhuff Tarkin, formerly lieutenant governor of the planet under the Republic, who oversaw the Seswenna Sector and Oversector Outer from the planet under the New Order. After his death, the Tarkin Memorial Conference Center was constructed in Eriadu City, named to honor the late Grand Moff.

Yuuzhan Vong War and beyondEdit
In 26 ABY, during the Yuuzhan Vong War, the Jedi Corran Horn, Anakin Solo, and Tahiri Veila visited the planet. During their time at Eriadu, Anakin and Tahiri came to the aid of the Rodian Jedi Kelbis Nu who was under attack by Peace Brigade agents. Before Kelbis died, they learned that Yag'Dhul would be attacked by the Yuuzhan Vong because it was where the Corellian Trade Spine and the Rimma Trade Route met.

Unfortunately, the two Jedi were arrested by Eriaduan judicials and were interrogated by judicial Lieutenant Themion. During the interrogation, Anakin was subject to brutal treatment by Themion until Tahiri came to his aid. Anakin, Tahiri, and Corran escaped Eriadu on the transport Lucre. Eriadu remained a member of the New Republic and the Galactic Alliance, though there was a certain degree of resentment toward the galactic government due to the economic hardships experienced by emancipation of the slaves and the new environmental controls placed on the planet. When it became apparent that Contruum was to be attacked during the Defense of Mon Calamari, two Eriaduan taskforces jumped out of the system, though these may have been individual decisions.

The Yuuzhan Vong bypassed Eriadu, which emerged from their conflict with greatly enhanced importance and influence.[3] Eriadu was a member of the Confederation during the Second Galactic Civil War,[10] and by 137 ABY, it fell within space controlled by the Galactic Empire of Darth Krayt.[11]

Eriadu City will become the home of the Tarkin Memorial Conference Center.

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