Canceron
the Largest Democracy
Canceron was a planet of the Cyrannus star system orbiting Helios Delta, the most populous of the Twelve Colonies of Kobol. A long-standing democracy of vast cities and sprawling slums, it shared an orbit with Aerilon and Hestia.
Canceron, known as "The Largest Democracy," was a planet in the Cyrannus star system orbiting the star Helios Delta, and one of the Twelve Colonies of Kobol. It was named after the Cancer tribe who had resided on Kobol. Canceron shared its orbit with Aerilon and Hestia, occupying the L4 and L5 Lagrange positions. It held the largest population of any of the colonies, yet remained economically behind, its great cities ringed by extensive slums. (Battlestar Galactica Map of the 12 Colonies)
History#
Canceron was colonized at some point before or during the eleventh century and governed itself as a democracy for a thousand years before the Fall of the Twelve Colonies. It was largely ignored by the imperial superpowers Virgon and Leonis, and its distance from the other major worlds left it economically behind. The development of faster-than-light propulsion proved a boon, allowing Canceron and neighboring Aerilon to profit from the extraction and shipping of minerals from their own worlds and from the gas giant Ragnar. Following the First Cylon War there were signs of an economic upturn. (Battlestar Galactica Map of the 12 Colonies)
Canceron was hit by nuclear weapons in the Fall of the Twelve Colonies, and the liner Pyxis was one of the last ships to get away from it as the attack began. After the Fall, Robin Wenutu sat as Canceron's delegate to the first Quorum of Twelve. (Battlestar Galactica: The Plan; Battlestar Galactica, "Colonial Day")
Geography#
Canceron was a temperate world with extremely large cities. Its remoteness from the other major colonies may have contributed to its long inability to establish a large-scale industrial, military, or tourism economy, leaving slums around several of its great urban centers. Its fertility supported a vast population, which reached some 6.7 billion at the time of the Cylon War. Its capital was Hades, and the Ruby Range was among its landmarks. (Battlestar Galactica Map of the 12 Colonies)
Culture#
Canceron was founded as a constitutional democracy. Its government was a planetary congress representing some eighty-eight regional states, an arrangement that endured for the thousand years preceding the Fall and earned the colony its epithet, "The Largest Democracy." Its patron god was Hephaestus. (Battlestar Galactica Map of the 12 Colonies)
Frequently asked questions
- What was Canceron?
- Canceron, known as "The Largest Democracy," was a planet in the Cyrannus star system orbiting the star Helios Delta, and one of the Twelve Colonies of Kobol. It held the largest population of any of the colonies, yet remained economically behind, with its great cities ringed by extensive slums.
- Why was Canceron called The Largest Democracy?
- Canceron was founded as a constitutional democracy and governed itself through a planetary congress representing some eighty-eight regional states. This arrangement endured for the thousand years preceding the Fall and earned the colony its epithet, "The Largest Democracy."
- How large was Canceron's population?
- Canceron held the largest population of any of the Twelve Colonies, reaching some 6.7 billion at the time of the Cylon War. Its fertility supported this vast population, though the colony never converted it into prosperity.
- Why was Canceron economically behind the other colonies?
- Canceron was remote from the other major worlds and was largely ignored by the imperial superpowers Virgon and Leonis, which left it economically behind. The development of faster-than-light propulsion allowed Canceron and neighboring Aerilon to profit from minerals shipped from the gas giant Ragnar, and signs of an economic upturn appeared following the First Cylon War.
- What was the capital of Canceron?
- The capital of Canceron was Hades. The official map of the Colonies also lists the Ruby Range among its landmarks.
Sources
- BookBattlestar Galactica Map of the 12 Colonies, Quantum Mechanix, official licensed map
- FilmBattlestar Galactica: The Plan, Universal, 2009
- EpisodeBattlestar Galactica, "Colonial Day", Season 1, Episode 11 (2005)
Spotted a factual error or a primary source we missed? Email a correction. Every flagged claim gets reviewed.
Followed from this entry

Aerilon
Aerilon was an agricultural world and one of the Twelve Colonies of Kobol. Known as the food basket of the Colonies, it was a poor, working-class farming world and the birthplace of Gaius Baltar.

Kobol: humanity's lost homeworld
Kobol was the ancestral home of the Twelve Tribes, abandoned for two thousand years. The fleet found the Tomb of Athena there, and with it the way to Earth.

Leonis: Heart of the Colonies
The largest world in Cyrannus and seat of an early empire, known for its wine, ski slopes and learning. The Cylon attack left it uninhabitable.

Virgon: the Imperial Colony
A temperate world of Helios Beta, second largest of the habitable colonies, known for its forests, its wealth and its capital, Boskirk.

Cylon War: the machines revolt
The Cylons rose against the people who built them on Caprica. Twelve years of fighting ended in a sudden Armistice that held for forty years.

Cyrannus: the Colonies' four suns
Four stars in a double binary, Helios Alpha through Delta, holding all Twelve Colonies. Refugees from Kobol settled them two thousand years back.
Mentioned in5 entries
Battlestar Valkyrie
The Valkyrie was a Valkyrie-class battlestar of the Colonial Fleet. A veteran of the First Cylon War, she was later commanded by William Adama and was destroyed over Caprica in the opening hours of the Fall.
Cyrannus: the Colonies' four suns
Four stars in a double binary, Helios Alpha through Delta, holding all Twelve Colonies. Refugees from Kobol settled them two thousand years back.
Hestia
Hestia was a gas giant orbiting the star Helios Delta in the Cyrannus star system. At only 47,000 kilometers in diameter it was the smallest gas giant in the Four Systems, and it held seventeen moons.
Shelly Godfrey
Shelly Godfrey was a humanoid Cylon of the Number Six model who infiltrated the refugee fleet aboard a transport from Canceron. Posing as a defence worker, she manufactured forged evidence in a plot to discredit Gaius Baltar, and was airlocked by her own kind after she failed to kill him.
Twelve Colonies of Kobol
The United Colonies of Kobol, also called the Twelve Colonies of Kobol, was the interplanetary state that represented humanity from the Cylon War until its dissolution upon the settling of the second Earth.
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