Tizon (world)

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Tizon/Sword Worlds (Spinward Marches 0922)
Milieu 1116
StarportB Good: Spacecraft Construction, Overhaul, Refined fuel
Size5 Medium (8,000 km, 0.40g - 0.57g)
Atmosphere8 Dense
Hydrographics6 Wet World 60%
Population8 Moderate (300 million)
Government8 Civil Service Bureaucracy
Law7 Moderate Law (no firearms)
Tech LevelA Early Stellar (jump drive)
See also UWP
System Details
Primary K2 IV M3 V
Worlds 15
Gas Giants 3
Planetoid Belts 2
Cultural Details
Government Civil service bureaucracy
Law Level Moderate
Cultural Extension 8C5A
Army Size (BEs) 1500
Economic Details
Technology Level 10
Economic Extension
ResourcesFExtremely abundant
Labor7Moderate (30 million)
InfrastructureD Comprehensive
Importance Extension 4
Resource Units 5,460
GWP (BCr) 1,756
World Trade Number 5
Trade Volume (MCr/year) 13,557
Starport Details
Classification Class-B
Port Size 5
Building Capacity (Tons) 330,000
Port employees 3,390
Port passengers (annual) 688,100

Tizon is a rich world with a shirt-sleeve atmosphere and a balance of available surface water. The system supports a population in the 100's of millions, which makes it too urbanized to make an agricultural world. It is a member of Sword Worlds Confederation in the Sword Worlds Subsector of Spinward Marches Sector and in the Sword Worlds. This world supports a Sword Worlds Military Base and the system supports a Sword Worlds Naval Base.

Astrography & Planetology[edit]

Tizon is a member of the Spinward Main.

Tizon has two stars, the primary El Cid, and its companion Bucar. Tizon orbits at a distance of 2.0 AU. Tizon has two small moons, though neither have significant installations.

Tizon's primary is an evolving K2 IV star, which has become considerably brighter in the last 100 million years. Tizon was once uninhabitable, a Mars-like ball of rock that was well outside the system’s habitable zone; it only warmed as the primary brightened.

Binary Solar System[edit]

Tizon Binary Star System
Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol)


Primary Giant 1.608 3700 - 4600 2.834
Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit
AU 0.02053 0.13963 1.34 - 2.18 2.053 20.53
Orbit #  * 0 4 4 8
Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol)

M3 V

Secondary Main Sequence 0.3942 2300 - 3100 0.02
Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit
AU 0.00404 0.01179 0.11 - 0.18 0.404 4.04
Orbit #  *  * 0 1 6

IISS GURPS Astrographics Survey[edit]

0922 Tizon (Sword Worlds)

Starport: Class IV - Military base.

Diameter: 3,002 miles (4,800 km).
Atmosphere: Dense oxygen-nitrogen.
Hydrographics: 61%.
Climate: Cold.
Population: 372 million.
Government: Civil service bureaucracy.
Control Level: 3.
Tech Level: 9.
World Trade Number: 5.

Mainworld Data[edit]

Tizon has two continents: the larger one, Treskaginir, covers most of the northern hemisphere, while a smaller one, Noeglen, takes up half of the south. The world is rich in minerals, with mining communities scattered all over the planet. Tizon's climate is chilly, so the population is concentrated near the equator, particularly around the Athskilinn Sea, a large inland sea that separates central Treskaginir from Noeglen.

Tizon has a dense oxygen-nitrogen atmosphere with almost perpetual cloud cover (only 10% of the planet receive direct sunlight at any given moment), resulting in a chilly climate. Tizon was subject to a fairly successful terraforming program by the Darrians before being abandoned in the wake of the Maghiz disaster. As such, Tizon actually supports some of the last surviving populations of native Darrian species that are extinct on their own homeworld.

History & Background (Dossier)[edit]

Historically Tizon has been one of the most important of the Sword Worlds, and in the past it has built an empire big enough to make it a power almost comparable to Gram (Spinward Marches 1223). Today Tizon pours its energy towards trade, science, and art. The capital city is Ny Eital; its Downport is Osgihamn Starport.

Tizona (also Tizón) is the name of one of the medieval swords carried by Rodrigo Díaz de Vivar, El Cid, according to the Cantar de Mio Cid.

References & Contributors (Sources)[edit]

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.