Mithril (world)

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250 px
Mithril/Sword Worlds (Spinward Marches 1628)
Classic Era (1116)
E568000-0
StarportE Frontier - no facilities
Size5 Medium (8,000 km, 0.40g - 0.57g)
Atmosphere6 Standard
Hydrographics8 Wet World 80%
Population0 Barren (0)
Government0 No Government structure
Law0 No Law
Tech Level0 Pre-Industrial (primitive)
See also UWP
System Details
Primary F4 V
Planetoid Belts 0
Gas Giants 1
style="width: 220px; height: 250px;"
Jump map from Travellermap.com [1]

Mithril is a barren world with no overt population, government, or law level.

Description (Astrography & Planetology)

Stars

Mithril has a solitary primary star cataloged as CN4335688.

  • It is a white main sequence.

Solitary F Type.jpg

Mithril has a solitary primary star.
CN4335688
Solitary F Type.jpg Type Category Mass (Sol) Temperature (K) Luminosity
F4 V Main Sequence (Dwarf) 1.38 6550 - 6670 3.08729
Unit Diameter Safe Distance Habitable Zone Jump Shadow M-Drive Limit
AU 0.0143 0.1457 1.58 - 2.75 1.43 14.3
Orbit #  * 0 4 4 7
Remarks None

System Data

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

Mainworld Data

Mithril is a terrestrial world orbiting an F4 V star, referred to as CN4335688, at a mean distance of 2.60 AU. Unfortunately, this orbital distance gives the planet a low average surface temperature despite its energetic primary. The ice caps are extensive, and even the equatorial lands have a climate like that of northern Scandinavia on Terra. In actuality, the water which covers the surface of Mithril is mostly ice; ice-caps cover both poles, and much of the continental land mass is under a mantle of ice and snow.

Mithril orbits just within the star's Habitable Zone.

  • It lies within the zones colder outer H- region.
  • It receives lower levels of stellar energy.

Chart H- Region Mw.png

The world has a slightly eccentric orbit – at its closest approach to the star during the 1,303 standard day-long local year (consisting of 1,105.7 Mithrilese days of 28 standard hours, 17 minutes each), temperatures climb high enough for a growing season that supports plant life. The local biosphere has adapted, and “ephemeral glades” containing a wide variety of plant and pseudoinsect species will grow and die over the course of a day or two when conditions are right.[2]

Mainworld Size (S)

Mithril is a Meso World between 7,200km and 8,800km in diameter. The world has a standard gravity between 0.4G and 0.57G. The horizon will appear about 4km away.

Mainworld Atmosphere (A)

Mithril has a pressure of 0.71 to 1.49 atmospheres. A Standard Atmosphere does not require survival gear and will likely be easy for most sophonts to breathe.

Mainworld Hydrosphere (H)

Mithril has 75-85% of its surface covered by liquid water with a few large continents and extensive islands. Wilderness refueling is possible.

Cold World 06j.jpg

Mainworld Geography and Topography

World Map Mithril Basic 2.png

Native Lifeforms

Mithril supports a range of native lifeforms occupying a wide variety of ecological niches. Its metabolic functions drive the process of atmospheric renewal.

Local species include the Calamander (an aggressive burrow-dweller known for stealing small objects), the Snow-Worm (a gigantic, mindless, near-mythical filter feeder), the Raucuss (a noisy, bird-like flyer), and Crystallice (lethal burrowing organisms that utilize the bodies of other creatures to reproduce)[3][4].

History & Background (Dossier)

Comp-Prog-Dav-R-Deitrick-Starter-Trav-Page-16 16-July-2018a.jpg

Mithril is listed in the directories as having no population, government, or law level; this is not entirely true. Mithril was one of the group of Metal Worlds held in reserve by the Sword Worlds Confederation for future development. To support that claim, a rudimentary Starport (type E, little more than an administration building next to a paved area) was maintained, along with a port warden responsible for establishing sovereignty. Formally Mithril thus had both population, government, and law, but with no way to enforce the law away from the administration building, the Scouts chose to ignore it.

When the Border Worlds were formed in 1111, the Metal Worlds went with them. The port warden was replaced by one appointed by the Border Worlds, but otherwise things remain the same.

World Starport (St)

Mithril has a Class E Starport, a frontier quality installation with few expected amenities. There is unrefined fuel for starships and a limited variety of ship provisions. There is no shipyard of any kind, but there may be parts and technical support for doing minor services and repair. Ports of this classification generally consist of a downport.

World Population (P)

Mithril is a Barren World with no sophont population. It may still possess lifeforms.

World Technology Level (T)

Mithril possesses a Tech Level of TL–0.

  • The world has no technological base.

World Government (G)

Mithril has no government or ruling authority of any kind.

World Law (L)

Mithril has no law level. No laws of any kind are enforced.

Trade Data

  • Importance: -3 (very unimportant)

World Economy

  • Resources: 2 (very scarce)
  • Labor: 0 (none)
  • Infrastructure: 0 (non-existent)
  • Efficiency: -5 (extremely poor)

World Culture

  • Heterogenity: 0 (none)
  • Acceptance: 0 (none)
  • Strangeness: 0 (none)
  • Symbols: 0 (none)

World Timeline

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

Original Data

(Editor's Note: the original data detailing the world's orbital distance places it far beyond the point where any water can remain liquid on the surface. As such, within the Mainworld Data, above, the information has been reworked to match the current understanding of the habitable zones of F4 V stars – the region around such a star where liquid water may exist. The original data is provided below.)

Mithril is a terrestrial world, orbiting a powerful F4 V star. Unfortunately, Mithril orbits at a distance that gives it a low average surface temperature despite the heat of its primary. The ice caps are extensive, and even the equatorial lands have a climate like that of northern Scandinavia on Terra. Only the planet’s 2,486-day year (2,109.5 Mithrilese days of 28 hours, 17 minutes each) allows for a long enough growing season to support plant life. The local biosphere has adapted, and “ephemeral glades” containing a wide variety of plant and pseudoinsect species will grow and die over the course of a day or two when conditions are right.[5]

Mithril is an average-sized world measuring 8000 kilometers in diameter, with a standard atmosphere and water covering 80% of the world surface. In actuality, the water which covers the surface of Mithril is mostly ice; ice-caps cover both poles, and much of the continental land mass is under a mantle of ice and snow. Mithril's temperature rarely goes above freezing, as it orbits CN4335688, its F4 V primary, at a distance of 4.10 AU. Only the 2,486-day year allows for a long enough growing season to support plant life.

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.
  1. ↑ "Jump Map API" and map location from Travellermap.com
  2. ↑ Paul Drye, Hans Rancke-Madsen, Robert Prior. Sword Worlds (Steve Jackson Games, 2004), 72.
  3. ↑ Double Adventure 2: Across the Bright Face/Mission to Mithril, Game Designers Workshop, 1980.
  4. ↑ Marches Adventure 2: Mission on Mithril, Mongoose 2nd, Pages 23, 24
  5. ↑ Paul Drye, Hans Rancke-Madsen, Robert Prior. Sword Worlds (Steve Jackson Games, 2004), 72.
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