Nist (world)

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

Nist/Tsorva (Halcyon 1616)
Classic Era (1115)
StarportA Excellent: Starship Construction, Overhaul, Refined fuel
Size5 Medium (8,000 km, 0.40g - 0.57g)
Atmosphere6 Standard
Hydrographics4 Wet World 40%
Population7 Moderate (60 million)
Government9 Impersonal Bureaucracy
Law8 High Law (controlled blades)
Tech LevelB Average Stellar (large starships)
See also UWP
System Details
Primary G4 V M2 V
Planetoid Belts 0
Gas Giants 2
Jump map from [1]

Nist is a rich, agricultural world with improving living conditions due to a bustling agro-economy.

  • As an agricultural world, this world is a near-ideal environment for producing quality foodstuffs of plant, animal, and other forms. Quality foodstuffs are a major export commodity for this world.
  • This is a rich world with a prosperous and thriving world economy.
  • This world is rich with high-grade living conditions, a good climate, and a non-harmful environment. Immigration registration for this world is always in high demand.
  • It is a Non-Aligned world dominated by human sophonts located in the Tsorva Subsector of Halcyon Sector.
  • 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.

Binary Solar System[edit]

Nist Binary Star System
Star Name Hierarchy Color Classification Remarks
Nist Primary Primary Yellow G4 V None
Nist Companion Secondary Red M2 V Orbits primary at 9.8 AU

System Data[edit]

Ely-Nist System[edit]

The primary is Ely, an ordinary yellow main sequence star. It has a luminosity of 0.778 Sols, a mass of 0.96 Sols, and a diameter of 1.299 million km. The inner system consists of (I) a rocky vacuum world and (II) a corrosive atmosphere inferno world. (III) Nist orbits within the habitable zone and is designated the mainworld. (IV) a small gas giant forms the starward part of the outer system. Orbital positions (V) through (IX) are unavailable due to the presence of the companion star. (X) a large gas giant and (XI) a thin atmosphere bigworld form the spaceward part of the outer system. Many of the worlds in the system retain satellites.

Hereward Subsystem[edit]

The companion is Hereward, an ordinary red main sequence star that orbits Ely at 9.8 AU (orbital position (VIII), 1.466 billion km). It has a luminosity of 0.0268 Sols, a mass of 0.4258 Sols, and a diameter of 658,000 km. (I) a marginally hospitable world orbits in the habitable zone. (II) a vacuum iceworld and (III) a trace atmosphere iceworld form the outer system. None of the worlds retain satellites.

  • Ely and Hereward orbit their barycenter at a mean separation of 9.8 AU (1.466 billion km). They have an orbital period around one another of 26 years 42 days.

Mainworld Data[edit]

(III) Nist[edit]

(III) Nist is designated the mainworld. It orbits Ely at a mean distance of 0.71 AU (106.2 million km), within the habitable zone. It has an orbital period of 223 days 0 hours and a rotation period of 27.5 hours. The axial tilt is 33 degrees. Nist has a diameter of 7,872 km, a density of 5.67 g/cm³, and a surface gravity of 0.63 G. The world is geologically active. Its atmosphere is rated as Standard, with a mean surface pressure of 1.15 bar and a composition of 77% nitrogen, 22% oxygen, and 1% argon, carbon dioxide, neon and other trace gases. Approximately 36% of the surface is covered in seas of liquid water: average tidal ranges exceed 0.25m. Mean surface temperature: 19°C. The atmosphere is dynamic and strong weather systems, driven by the star and the seas, sweep across the globe. The climate is seasonal.


Nist retains two natural satellites, a small vacuum moon named Polysander and a marginally habitable world named Fawn:

(IIIa) Polysander (UWP G200000-0, orbiting at 20 Diameters/157,000 km).
(IIIb) Fawn (UWP F332437-A, orbiting at 55 Diameters/433,000 km).

Mainworld geography and topography[edit]

Total surface area: 195 million km², Land surface area: 125 million km², Water surface area: 70 million km².

Native lifeforms[edit]

Extensive and abundant native life that fills every available ecological niche.

History & Background (Dossier)[edit]

No information yet available.

World starport[edit]

Nist 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.
  • Peace footing (government modifier x1.15). Port Capacity: 69,000 dTons


Port facilities within the system include:

World technology level[edit]

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

World government[edit]

Nist has an Impersonal Bureaucracy government.

  • It is a government by agencies which are insulated from the governed.
  • The typical power source of this government is an Oligarchy.
  • The typical power structure of this government is a Hegemony.

World military[edit]

Nist Military Forces are charged with defense of the system.

World economy[edit]

No information yet available.

Trade data[edit]

A number of important companies have their headquarters at Rysos:

World demographics[edit]

No information yet available.

World culture[edit]

No information yet available.

Historical data[edit]

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