style="width: 220px; height: 250px;"
Jump map from Travellermap.com 
|Law Level||No law|
|Army Size (BEs)||0|
|World Trade Number||0|
|Trade Volume (MCr/year)||0|
|Building Capacity (Tons)||0|
|Port passengers (annual)||0|
Mithril is a barren world with no registered population or government. The world has been set aside to preserve indigenous life forms, to delay resource development, or for other reasons. It is a member of Sword Worlds Confederation in the Sword Worlds Subsector of Spinward Marches Sector and in the Sword Worlds.
Description (Astrography & Planetology)
Mithril is a member of the Spinward Main. Mithril is one of the Metal Worlds.
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.
Mithril Monostellar System Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol) Mithril
Primary Main Sequence 1.38 6300 - 6900 4.42 Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit AU 0.01359 0.17438 1.67 - 2.72 1.359 13.59 Orbit # * 0 4 4 7 Remarks CN4335688
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.
History & Background (Dossier)
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.
References & Contributors (Sources)
- Marc Miller. The Spinward Marches (Game Designers Workshop, 1979), 16-17.
- Marc Miller. Across the Bright Face/Mission on Mithril (Game Designers Workshop, 1980), 6-11.
- 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), 72-73.
- Paul Drye, Hans Rancke-Madsen, Robert Prior. Sword Worlds (Steve Jackson Games, 2004), 22-73.
- Mike West. The Spinward States (Avenger Enterprises, 2008), 109. (UWP only)
- Martin Dougherty. The Spinward Marches (Mongoose Publishing, 2008), .
- Martin Dougherty. Mission to Mithril (Mongoose Publishing, 2018), .
- Martin Dougherty. Behind the Claw (Mongoose Publishing, 2019), 89-92,96-97.
- Martin Dougherty. Sword Worlds (Mongoose Publishing, 2020), .
- ↑ "Jump Map API" and map location from Travellermap.com
- ↑ Paul Drye, Hans Rancke-Madsen, Robert Prior. Sword Worlds (Steve Jackson Games, 2004), 72.