Jesel (world)

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

Jesel/Farin (Halcyon 0811)
Classic Era (1115)
StarportA Excellent: Starship Construction, Overhaul, Refined fuel
Size5 Medium (8,000 km, 0.40g - 0.57g)
Atmosphere7 Standard (tainted)
Hydrographics8 Wet World 80%
Population8 Moderate (900 million)
GovernmentA Charismatic Dictator
LawC Extreme Law (no privacy)
Tech LevelB Average Stellar (large starships)
See also UWP
System Details
Primary F8 V
Planetoid Belts 2
Gas Giants 5
Jump map from [1]

Jesel is a pre-agricultural, pre-Industrial, moderate population world with over a hundred million, but not yet at a billion sophonts in population size.

  • It requires significant imports of outside technology to maintain a modern, star-faring society.
  • Its economy and population are growing and living conditions are expected to slowly improve barring outside forces.
  • It is a member of The Last Line in the Farin Subsector of Halcyon Sector, which is part of the Distant Fringe.
  • This world-system hosts a Military Base, usually associated with military ground forces, which may be located on or off-world.

Description (Astrography & Planetology)[edit]

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

  • The Jesel system is a part of the Vey Trace.

Monostellar System[edit]

Jesel Monostellar System
Star Name Hierarchy Color Classification Remarks
Jesel Primary Yellow-White F8 V None

System Data[edit]

Kimmesey-Jesel System[edit]

The primary is Kimmesey, an ordinary yellow-white main sequence star. It has a luminosity of 2.126 Sols, a mass of 1.144 Sols and a diameter of 1.639 million km. The inner system consists of (II) a vacuum inner world, and (III) an exotic atmosphere radworld – orbital position (I) is empty. (IV) Janipor, a large gas giant, orbits within the habitable zone: (IVc) Jesel is its third satellite and is designated the mainworld. (V) a large gas giant, (VII) a sparse stony planetoid belt, (VIII) a small gas giant, (IX) a small ice giant, (X-I) a ringed large gas giant, and (X-II) a sparse icy planetoid belt form the outer system – orbital position (VI) is empty. Many of the worlds in the system retain satellites.

(IV) Janipor[edit]

(IV) Janipor is a large gas giant that orbits Kimmesey at a mean distance of 1.1 AU and has an orbital period of 1 year 29.5 days. It has a diameter of 86,000km and is a faintly banded tan-brown colour. It retains a family of four major satellites of which the third, (IVc) Jesel, is designated the mainworld. Huge aurorae play across the huge world's northern and southern poles.

Mainworld Data[edit]

(IVc) Jesel[edit]

(IVc) Jesel is the third of the four major moons of Janipor and is designated the mainworld. Jesel orbits its parent world at a mean distance of 35 diameters (3.01 million km), with an orbital period of 54 days 18 hours: it is tidally locked to Janipor. The axial tilt is 6 degrees relative to Janipor. It has a diameter 8,454 km, a density of 5.59 g/cm³, and a surface gravity of 0.67 G. Tidal stresses generated by the gravitational pull of Janipor cause frequent geological activity. Its atmosphere is rated as Standard, Tainted, with a mean surface pressure of 0.89 bar and a composition of 84% nitrogen (N2), 15% oxygen (O2), and 1% argon (Ar), carbon dioxide (CO2), water vapor (H2O), neon (Ne) and other trace gases. The taint is caused by the low percentage of atmospheric oxygen. Approximately 83% of the surface is covered in oceans of liquid water: average tidal ranges exceed 0.8m. Mean surface temperature: 8°C. The atmosphere is dynamic and powerful weather systems, driven by the star and the oceans, sweep across the globe. The climate is static.

Mainworld Geography and Topography[edit]

Total surface area: 225 million km², Water surface area: 189 million km², Land surface area: 36 million km².

Native lifeforms[edit]

Jesel, the mainworld, has extensive native life, although almost all lifeforms are aquatic. Their metabolic functions drive the process of atmospheric renewal. The most sophisticated land-dwelling organisms are primitive photosynthetic slimes and blue-green algae.

History & Background (Dossier)[edit]

Last Line Logo.gif

Jesel is a former member of the Corolian Jurisdicture.

  • Jesel is the de facto capital of the Last Line.

World starport[edit]

Jesel has an excellent quality starport.

  • A Class-A Starport Facility has very well developed shipyards and is capable of producing first rate starships.
  • This facility has many very skilled personnel who can perform not only major repair work, but overhaul work as well.
  • This facility has advanced refueling and refining infrastructure. One may purchase practically any kind of refined fuel here.
  • Almost every starport of this class possesses both a Lowport and a Highport. Sometimes multiple ports of each type.
  • War footing (government modifier x1.5). Port Capacity: 1,200,000 dTons


Port facilities within the system include:

World technology level[edit]

Jesel possesses a Technology Level of TL–11 or TL-B in Hexadecimal Notation.

World government[edit]

Jesel has a Charismatic Dictator government.

  • It is a government by a single leader enjoying the confidence of the citizens.
  • The typical power source of this government is a Popular Autocracy.
  • The typical power structure of this government is an Empire.

World military[edit]

No information yet available.

World economy[edit]

  • Resources: C (Very abundant)
  • Labor: 7 (Tens of millions)
  • Infrastructure: B (Very extensive)
  • Efficiency: +3 (Improved)

Trade data[edit]

A number of important companies have their headquarters at Denirad:

  • Allied Consolidated.

World demographics[edit]

Population 900,000,000


No information yet available.

World culture[edit]

  • Homogeneity: 5 (Harmonious)
  • Acceptance: A (Very friendly)
  • Strangeness: 3
  • Symbols: A

The Seat of Government of the Last Line is the Monastery of Monilac, in the southern high polar mountains.

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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  1. "Jump Map API" and map location from