Yuru (world)

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This is a world-system under construction and is currently being input-programmed into the Traveller RPG Wiki.

Yuru/Liradi (Gulf 0305)
Classic Era (1115)
StarportE Frontier - no facilities
Size7 Medium (11,200 km, 0.70g - 0.94g)
AtmosphereB Exotic (corrosive)
Hydrographics1 Dry World 10%
Population1 Low (50)
Government0 No Government structure
Law0 No Law
Tech Level8 Pre-Stellar (superconductors)
See also UWP
System Details
Primary G6 V M6 VI
Planetoid Belts 2
Gas Giants 1
Jump map from Travellermap.com [1]

Yuru is a low population, fluidic hellworld of less than 10,000 sophonts struggling to survive in a inhospitable environment.

  • A fluid world has an oceanic geography of a liquid other than water such as ammonia, methane, hydrocarbons, or other exotic liquids.
  • Hellworlds often offer daily, and sometimes hourly, life-threatening situations to their inhabitants.
  • It is a Non-Aligned world dominated by human sophonts located in the Liradi Subsector of Gulf Sector.

Astrography and Planetology[edit]

This star system is detailed using the Fringian Variant System Description.

Binary Solar System[edit]

Yuru Binary Star System
Star Name Hierarchy Color Classification Remarks
Yuru Primary Primary Yellow G6 V None
Yuru Companion Secondary Red M6 VI 3.01 AU from primary

System Data[edit]

Gestat-Yuru System[edit]

The primary is Gestat, an ordinary yellow main sequence star. It has a luminosity of 0.62 Sols, a mass of 0.917 Sols, and a diameter of 1.266 million km. The inner system consists of (I) a very thin atmosphere inner world, and (II) a corrosive atmosphere inferno world. (III) Yuru orbits within the habitable zone and is designated the mainworld. (IV) a dense atmosphere stormworld forms the inner part of the outer system. Orbital positions (V) through (VIII) are unavailable due to the presence of the companion star. (IX) a sparse icy planetoid belt, (X) a ringed large gas giant, and (XI) an exotic atmosphere bigworld form the outer part of the outer system. Many of the worlds retain satellites.

Fertha Subsystem[edit]

The companion is Fertha, a dim red subdwarf star that orbits Gestat at a mean distance of 3.01 AU (orbital position (VI), 450 million km) and has an orbital period of 5 years 166 days. It has a luminosity of 0.00152 Sols, a mass of 0.093 Sols, and a diameter of 127,000 km. (I) a sparse icy planetoid belt and (II) a vacuum worldlet orbit within the outer system. The worldlet has no satellites.

Mainworld Data[edit]

(III) Yuru[edit]

(III) Yuru is designated the mainworld. It orbits Gestat at a mean distance of 0.93 AU (139.1 million km), within the habitable zone. It has an orbital period of 342 days 2 hours and a rotation period of 27 hours. The axial tilt is 17 degrees. Yuru has a diameter of 11,775 km, a density of 6.12 g/cm³, and a surface gravity of 1.02 G. The world is geologically active. Its atmosphere is rated as Corrosive, with a mean surface pressure of 29.2 bar and a composition of 82% nitrogen (N2), 16% carbon dioxide (CO2), 1% azane (NH3), 1% argon (Ar), carbon monoxide (CO), water vapor (H2O), methane (CH4), hydrogen (H2), neon (Ne) and other trace gases. Approximately 13% of the surface is covered in lakes of superheated water kept liquid by the high atmospheric pressure, which increases its boiling point to 232°C: average tidal ranges exceed 0.2m. Mean surface temperature: 183°C. The climate is rated as Inferno and experiences moderate seasonal changes during the local year. The atmosphere is very active and violent weather systems driven by the star sweep across the globe.


Yuru retains a single natural satellite, a very thin atmosphere hospitable world named Joloko:

(IIIa) Joloko (UWP H524000-0, orbiting at 65 diameters/765,000 km)

Mainworld Geography and Topography[edit]

Total surface area: 436 million km², Land surface area: 379 million km², Water surface area: 57 million km².

Native Lifeforms[edit]

The stormworld lying in orbital position (V) (within the H+ region of the outer system) has exotic, extensive native life, consisting of microscopic organisms, stromatolite-parallels and bizarre flora forms that can be found in almost every ecological niche. Their metabolic functions drive the process of atmospheric renewal.

No other world in the system is known to have native life.

History & Background (Dossier)[edit]

No information yet available.

World starport[edit]

Yuru has a frontier quality starport.

World technology level[edit]

Yuru possesses a Technology Level of TL–8.

  • Common Communication technologies for this TL include: Fiber optics, improved telephones, and satellite communication and data networks.
  • Common Power Generation technologies for this TL include: Improved geothermal and improved batteries.
  • Common Transportation technologies for this TL include:
    • Land: Advanced automobiles.
    • Water: Triphibians and early artificial gills.
    • Air: Improved helicopters and hypersonic jets.
    • Space: Space shuttles, early space stations, and improved interplanetary spacecraft (System Craft).

World government[edit]

Yuru has no well-defined government structure. It is an Anarchy.

  • In many cases, tribal, clan or family bonds predominate.
  • The typical power source of this government is an Pantocracy or Chaos.
  • The typical power structure of this government is a Confederation (Anarchy).

World military[edit]

No information yet available.

World Economy[edit]

  • Resources: 7 (Few)
  • Labor: 0 (None)
  • Infrastructure: 1 (Extremely limited)
  • Efficiency: +0 (Routine)

Trade Data[edit]

No information yet available.

World Demographics[edit]

Population: 50

World Culture[edit]

  • Homogeneity: 2 (Monolithic)
  • Acceptance: 1 (Extremely xenophobic)
  • Strangeness: 4 (Somewhat distinct)
  • Symbols: 8 (Somewhat abstract)

Historical Data[edit]

No information yet available.

World Timeline[edit]

No information yet available.

UWP Listing[edit]

No information yet available.

References & Contributors / Sources[edit]

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This article was copied or excerpted from the following copyrighted sources and used under license from Far Future Enterprises or by permission of the author.

  1. "Jump Map API" and map location from Travellermap.com