Calistal (world)

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

Calistal/Jerik (Halcyon 0425)
Classic Era (1115)
StarportC Routine: No Construction, Major Repair, Unrefined fuel
Size8 Large (12,800 km, 0.80g - 1.08g)
Atmosphere9 Dense (tainted)
Hydrographics7 Wet World 70%
Population6 Moderate (7 million)
Government7 Balkanization
Law7 Moderate Law (no firearms)
Tech Level5 Industrial (mass production)
See also UWP
System Details
Primary G0 V D
Planetoid Belts 1
Gas Giants 3
Jump map from [1]

Calistal is an agricultural, nonindustrial world still lacking adequate means to expand its economy.

Astrography and Planetology

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

Binary Solar System

Calistal Binary Star System
Star Name Hierarchy Color Classification Remarks
Calistal Primary Primary Yellow G0 V
Calistal Companion Secondary White Dwarf D 9450 AU from primary

System Data

Hatchet-Calistal System

The primary is Hatchet, an ordinary yellow main sequence star. It has a luminosity of 1.21 Sols, a mass of 1.04 Sols, and a diameter of 1.433 million km. The inner system consists of (I) a trace atmosphere worldlet, and (III) a corrosive atmosphere inferno world – orbital position (II) is empty. (IV) Calistal orbits within the habitable zone and is designated the mainworld. (V) a sparse stony planetoid belt, (VI) a ringed large gas giant, (VII-I) a ringed small gas giant, (VII-II) a small ice giant form the outer system. Many of the worlds retain satellites.

Saxe Subsystem

The companion is Saxe, a tiny white dwarf star lying some 9,450 AU from Hatchet. It has a luminosity of 0.00003 Sols, a mass of 1.11 Sols, and a diameter of 8,350 km. (I-I) a vacuum worldlet, and (I-II) a vacuum iceworld form the outer system. Neither of the worlds retain satellites.

Mainworld Data

(IV) Calistal

(IV) Calistal is designated the mainworld. It orbits Hatchet at a mean distance of 0.96 AU (143.6 million km), within the habitable zone. It has an orbital period of 355 days 18 hours and a rotation period of 26 hours. The axial tilt is 22 degrees. Calistal has a diameter of 12,962 km, a density of 5.59 g/cm³, and a surface gravity of 1.03 G. The world is geologically active. Its atmosphere is rated as Dense, Tainted, with a mean surface pressure of 1.94 bar and a composition of 80% nitrogen (N2), 18% oxygen (O2), 1% argon (Ar), and 1% water vapor (H2O), carbon dioxide (CO2), ozone (O3), xenon (Xe), neon (Ne) and other trace gases. The taint is caused by allergenic spores and pollens of organic origin. Approximately 72% of the surface is covered in oceans of liquid water: average tidal ranges exceed 0.4m. Mean surface temperature: 28°C. The climate is rated as Temperate-Warm and experiences moderate seasonal changes during the local year. The atmosphere is active and strong weather systems driven by the star and the oceans sweep across the globe.


Calistal retains a single natural satellite, a cratered vacuum worldlet named Vernan:

(IVa) Vernan (UWP H200000-0, orbiting at 30 Diameters/390,000 km)

Mainworld Geography and Topography

Total surface area: 528 million km², Water surface area: 380 million km², Land surface area: 148 million km².

Native Lifeforms

Hatchet-Calistal System

Calistal, the mainworld, has extensive, abundant native life, with complex organisms inhabiting every ecological niche. Their metabolic functions drive the process of atmospheric renewal. The pollens and spores released by the native flora give the atmosphere its taint.

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

Saxe Subsystem

No world in the subsystem is known to have native life.

History & Background (Dossier)

No information yet available.

World starport

Calistal has a routine quality starport.

  • A Class-C Starport Facility has minimal if any shipyards and can only perform extremely limited repair work.
  • This facility has many very skilled personnel who can perform surprisingly sophisticated repair work despite the limited facilities.
  • This facility has refueling infrastructure and limited refining capabilities. One may purchase unrefined fuel here.
  • Starports of this class rarely have both a Lowport and a Highport.

World technology level

Calistal possesses a Technology Level of TL–5.

  • Common Communication technologies for this TL include: Telephone, radio, and television.
  • Common Power Generation technologies for this TL include: Electricity, hydrocarbon internal combustion, and the most fundamental atomic energy.
  • Common Transportation technologies for this TL include:
    • Land: Ground cars or automobiles and tracked vehicles.
    • Water: Large ships and submersibles with steel hulls.
    • Air: Early aircraft including seaplanes and very early unmanned rockets.

World government

Calistal has a Balkanized government.

  • No central ruling authority exists. Rival governments compete for control.
  • The typical power source of this government is a Balkanization.
  • The typical power structure of this government is a Confederation (Anarchy).

World military

No information yet available.

World economy

No information yet available.

Trade data

No information yet available.

World demographics

No information yet available.

World culture

No information yet available.

Historical data

No information yet available.

World timeline

No information yet available.

UWP listing

No information yet available.

References & Contributors / Sources

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  1. "Jump Map API" and map location from