Tyrfing (world)

Tyrfing/Sword Worlds (Spinward Marches 1324) Milieu 1116 B637735-A Starport B Good: Spacecraft Construction, Overhaul, Refined fuel Size 6 Medium (9,600 km, 0.60g - 0.81g) Atmosphere 3 Vacuum (very thin) Hydrographics 7 Wet World 70% Population 7 Moderate (70 million) Government 3 Self-Perpetuating Oligarchy Law 5 Moderate Law (no concealable weapons) Tech Level A Early Stellar (jump drive)
See also	UWP
style="width: 220px; height: 250px;" Jump map from Travellermap.com
System Details
Primary	M2 V
Worlds	6
Gas Giants	1
Planetoid Belts	0
Cultural Details
Government	Self-perpetuating oligarchy
Law Level	Moderate
Cultural Extension	5A38
Army Size (BEs)	15
Economic Details
Technology Level	10
Economic Extension	A6C+1 Resources A Abundant Labor 6 Moderate (7 million) Infrastructure C Very extensive Efficiency +1 Average
Importance Extension	3
Resource Units	720
GWP (BCr)	256
World Trade Number	4.5
Trade Volume (MCr/year)	8,485
Starport Details
Classification	Class-B
Port Size	4
Building Capacity (Tons)	63,000
Port employees	855
Port passengers (annual)	61,100

Tyrfing system has a population between 10 and 100 million sophonts. 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.

• This world is a "Twilight Zone World", a planet that is tidally-locked to its star. It has a hot side that permanently faces the star, a cold side that permanently faces away, and a narrow twilight zone in-between.
• Tyrfing is a member of the Spinward Main.
• It is part of the Gram Arm.

Description (Astrography & Planetology)

Stellar Data

Tyrfing has a solitary primary star.

• It is a red main sequence named Angantyr.

Tyrfing has a solitary primary star.

Angantyr
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	M2 V	Main Sequence (Dwarf)		0.44	3470 - 3560	0.0565
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0041	0.0197	0.25 - 0.48	0.41	4.1
	Orbit #	*	*	1	1	6
	Remarks

System Data

The worlds of the system have been surveyed. They consist of:

• The mainworld.
• x4 secondary rocky worlds.
• x1 gas giant.

Mainworld Data

Tyrfing is tidally locked to its primary, Angantyr.

• The star is always high in the sky on the bright face, it hangs on horizon in the twilight zone, while the cold dark face is in permanent darkness.
• The world experiences libration - a regular wobble - as it orbits, causing the star to move in the sky.

It orbits within its star's habitable zone.

• It receives moderate levels of stellar energy.

Mainworld Size (S)

Tyrfing is a Meso World between 8,800km and 10,400km in diameter. The world has a standard gravity between 0.6G and 0.8G. The horizon will appear about 4.4km away.

Mainworld Atmosphere (A)

Tyrfing has a pressure of 0.10 to 0.42 atmospheres. The very thin pressures require a respirator or Oxygen Mask. TL–5 or more advanced survival gear is required to settle this world.

• It experiences generally moderate temperatures.

Mainworld Hydrosphere (H)

Tyrfing has 65-75% of its surface covered by liquid water. It has significant large liquid bodies. Wilderness refueling is possible.

Mainworld Geography and Topography

A basic map of Tyrfing. The world's hot face, which permanently faces the star, is depicted as a yellow circle with a red cross at its center. The cold face, which permanently faces away from the star, is depicted as a pale icecap with a blue cross at its center. The twilight zone is shown as a medium blue strip (green where it crosses land) running vertically around the world.

Tyrfing's capital city, Munarvag, is located on the western edge of Dagmark, the largest continent.

History & Background (Dossier)

A temperate world in the Sword Worlds Subsector of the Spinward Marches. Prior to the Fifth Frontier War, Tyrfing was a member of the Sword Worlds Confederation, but in the aftermath of the war Tyrfing became part of the Imperial Client state known as the Border Worlds Confederation. As a member of the Border Worlds, Tyrfing is an important conduit for trade with the Sword Worlds Confederation. A slapdash city, Brakigastad, has grown up around Tyrfing's starport.

World Starport

Tyrfing's highport is modest, capable of handling a large volume of traffic but not impressive to look at. Its design is unusual, though, with a central hub area having only shuttle docks, and several specialist ports handling different types of traffic.

World Culture

Extremely conservative, Tyrfings often practice a focused form of Aesirism that concentrates on Freya as the god of fertility and crops.

World Languages

• Sagamaal: The common tongue of the Sword Worlds Confederation. Its name references the intent that it evoke the language of ancient sagas of northern Terra -- or at least an idealised understanding of those cultures.

Trivia

Tyrfing was a magic sword in Norse mythology. The dwarves made the sword, and it shone and gleamed like fire. They cursed it so that it would kill a man every time it was drawn and would be the cause of three great evils.

Trade Data

• Importance: 3 (ordinary)

World Economy

• Resources: A (abundant)
• Labor: 6 (millions)
• Infrastructure: C (very extensive)
• Efficiency: +1 (average)

World Culture

• Heterogenity: 5 (harmonious)
• Acceptance: A (very friendly)
• Strangeness: 3 (somewhat typical)
• Symbols: 8 (somewhat abstract)

World Timeline

Major events that have affected this world and the wider region that it lies within:

• -420: Terran-descended humans flee the Old Earth Union through the Aslan Hierate.
• -399: The fleeing humans found the first settlement within the Sword Worlds region.
• The Year 0: the Third Imperium is founded.
• 300-420: the Imperial First Survey charts the system.
• 589-604: First Frontier War.
• 604-622: the Imperial Civil War.
• 615-620: Second Frontier War.
• 624: the Imperial Express Boat Network is established.
• 852: the modern Sword Worlds Confederation is formed.
• 979-986: Third Frontier War.
• 995-1065: the Imperial Second Survey charts the system.
• 1065: the Second Survey is published. Information about the system becomes widely available.
• 1082-1084: Fourth Frontier War, also known as the False War.
• 1107-1110: Fifth Frontier War.

References & Contributors (Sources)

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 Mongoose Publishing or by permission of the author. The page history lists all of the contributions.

• Marc Miller. The Spinward Marches (Game Designers Workshop, 1979), 16-17.
• Marc Miller. The Spinward Marches Campaign (Game Designers Workshop, 1985), 18-19.
• Marc Miller. Imperial Encyclopedia (Game Designers Workshop, 1987), 94-100. (UWP only)
• Rob Caswell. "Domain of Deneb: Sector Data." MegaTraveller Journal 3 (1992): 47-58. (UWP only)
• Dave Nilsen. The Regency Sourcebook (Game Designers Workshop, 1995), 44-45. (UWP only)
• Martin Dougherty, Neil Frier. Behind the Claw (Steve Jackson Games, 1998), 70.
• Paul Drye, Hans Rancke-Madsen, Robert Prior. Sword Worlds (Steve Jackson Games, 2004), 54-55.
• Mike West. The Spinward States (Avenger Enterprises, 2008), 109. (UWP only)
• Martin Dougherty. The Spinward Marches (Mongoose Publishing, 2008), .
• Martin Dougherty. Behind the Claw (Mongoose Publishing, 2019), 89-92,96-97. (UWP only)
• Martin Dougherty. Sword Worlds (Mongoose Publishing, 2020), .