Yallio (world)

Yallio/Idella (Fulani 2533)
Classic Era (1116)	X500000-0 Starport X No Starport Size 5 Medium (8,000 km, 0.40g - 0.57g) Atmosphere 0 Vacuum Hydrographics 0 Desert World 0% Population 0 Barren (0) Government 0 No Government structure Law 0 No Law Tech Level 0 Pre-Industrial (primitive)
See also	UWP
System Details
Primary	M9 V BD
Planetoid Belts	0
Gas Giants	0

style="width: 220px; height: 250px;"

Jump map from Travellermap.com

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

• These worldlets warrant hazardous environment precautions.
• Life in a vacuum requires great discipline. After all, it only takes one forgotten seal on a vacuum suit to spell death.
• This world could be populated if anyone had an inclination to do so...
• It is an unclaimed Non-Aligned world located in the Idella Subsector of Fulani Sector.

• 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.
• Vacuum worlds have no climate, but experience extreme differences in temperature between direct starlight and shade.

Description (Astrography & Planetology)

Yallio is a binary star system.

• The primary is a red main sequence.
• The secondary is a brown dwarf substellar object.

Binary Solar System

Yallio Binary Star System

Star Name	Hierarchy	Category		Mass (Sol)	Temp (K)	Luminosity (Sol)
Yallio M9 V	Primary	Main Sequence		0.079	2350 - 2380	0.00014
	Unit	Diameter	Min Distance	Hab Zone	Jump Shadow	M-Drive Limit
	AU	0.0005	0.001	0.01 - 0.03	0.05	0.5
	Orbit #	*	*	*	*	1
	Remarks
	Flare Star.
Star Name	Hierarchy	Category		Mass (Sol)	Temp (K)	Luminosity (Sol)
Yallio BD	Secondary	Brown Dwarf		0.0276	950 - 1250	0
	Unit	Diameter	Min Distance	Hab Zone	Jump Shadow	M-Drive Limit
	AU	0.00092	0.00038	0 - 0.01	0.092	0.92
	Orbit #	*	*	*	*	3
	Remarks
	None

System Data

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

• The mainworld.
• x6 secondary rocky worlds.

Mainworld Data

Yallio is a Twilight Zone World.

• One side of the world permanently faces towards the star and one side permanently faces away.
• In the narrow region between permanent night and permanent day, the primary star eternally hangs on the horizon.

The mainworld orbits within the star's Habitable Zone.

• It lies within the zones prime H region.
• It receives moderate levels of stellar energy.

• The world orbits inside the stars Jump Shadow.

Mainworld Size (S)

Yallio 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)

Yallio has a pressure of less than 0.001 atmospheres which requires the use of a Vacc Suit. TL–8 or more advanced survival gear is required to settle this world.

Mainworld Hydrosphere (H)

Yallio has no free-standing water or ice on the surface. Wilderness refueling isn't possible on this world. Water for the inhabitants needs to be imported and extensively recycled. These worlds are classified Desert World or a Hell World depending on their atmosphere.

Mainworld Geography and Topography

No centrally held map of the world exists within AAB Library Data records.

• Locally, detailed maps may be available.
• Verified updated charts are constantly sought.
• Detailed survey data commands premium prices.

(Placeholder chart, vacuum world.)

Native Lifeforms

No native life.

History & Background (Dossier)

Yallio is a frontier, a wild and lonely place that rarely sees visitors. Many of the planets and moons within the system have never been visited by an intelligent being.

• Information about the system is limited.
• The resources of the system are untapped.

There is normally no activity within the system.

• Commercial traffic is extremely rare: the system sees very few visiting ships.
• Commo only picks up natural background noise and static.
• The system does not have any commercial navigation beacons.

Note that social data, though only 40 years old, may be out of date: previously undocumented groups may now inhabit the system and maintain their own culture, forms of government, and systems of law.

• Verified updated data is constantly sought.

World Starport (St)

Yallio does not have a starport. The Class X Starport is an indication that no starport exists in the system. There are no facilities or services available, and no site marked for landing.

World Population (P)

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

World Technology Level (T)

Yallio possesses a Tech Level of TL–0.

• The world has no technological base.

World Government (G)

Yallio has no government or ruling authority of any kind.

World Law (L)

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

Trade Data

• Importance: -3 (very unimportant)

World Economy

• Resources: 4 (scarce)
• Labor: 0 (unpopulated)
• Infrastructure: 0 (non-existent)
• Efficiency: -5 (extremely poor)

World Culture

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

World Timeline

• 300-420: the First Survey charts the system.
• 995-1065: the Second Survey charts the system.
• 1065: the Second Survey is published.

References & Contributors (Sources)

This article is missing content for one or more detailed sections. Additional details are required to complete the article. You can help the Traveller Wiki by expanding it.

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.

• Peter G. Celella, James Holden. Solomani & Aslan (Digest Group Publications, 1991), 50, 51. (sector named, dot map provided locating world)
• Author & Contributor: Jo Grant of CORE (generated data) / Geir Lanesskog (refinement of data)
• Author & Contributor: Lord (Marquis) and Master Scout Emeritus Adie Alegoric Stewart of the IISS