Erisun (world)

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

Erisun/Annistu (Far Home 0133)
Classic Era (1115)
X875000-0
StarportX No Starport
Size8 Large (12,800 km, 0.80g - 1.08g)
Atmosphere7 Standard (tainted)
Hydrographics5 Wet World 50%
Population0 Barren (0)
Government0 No Government structure
Law0 No Law
Tech Level0 Pre-Industrial (primitive)
See also UWP
System Details
Primary F9 V
Planetoid Belts 0
Gas Giants 3
jumpmap?sector=Far+Home&hex=0133&options=8451&jump=3&scale=32&junk=junk.png
Jump map from Travellermap.com [1]

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


Astrography and Planetology[edit]

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

Monostellar System[edit]

Erisun Monostellar System
Star Name Hierarchy Color Classification Remarks
Erisun Primary Yellow-White F9 V


System Data[edit]

Erisun System[edit]

The primary is Phoebe, an ordinary yellow-white main sequence star. It has a luminosity of 1.668 Sols, a mass of 1.092 Sols, and a diameter of 1.536 million km. The inner system consists of (I) a trace atmosphere inner world, (II) a vacuum worldlet, and (III) a corrosive atmosphere inferno world. (IV) Erisun orbits within the habitable zone and is designated the mainworld. (V) a thin atmosphere hospitable world, (VI) a ringed small gas giant, (VII) a ringed large gas giant, (VIII) a small ice giant and (IX) a vacuum iceworld form the outer system. Many of the worlds retain satellites.

Mainworld Data[edit]

(IV) Erisun[edit]

(IV) Erisun is designated the mainworld. It orbits Phoebe at a mean distance of 1.08 AU (161.6 million km), within the habitable zone. It has an orbital period of 1 year 27 days and a rotation period of 24.5 hours. The axial tilt is 14 degrees. Erisun has a diameter of 13,022 km, a density of 5.52 g/cm³, and a surface gravity of 1.02 G. The world is geologically active. Its atmosphere is rated as Standard, Tainted, with a mean surface pressure of 1.02 bar and a composition of 68% nitrogen (N2), 30% oxygen (O2), 1% argon (Ar), and 1% water vapor (H2O), carbon dioxide (CO2), ozone (O3), neon (Ne) and other trace gases. The atmospheric taint is caused by the high percentage of atmospheric oxygen. Approximately 54% of the surface is covered in oceans of liquid water: average tidal ranges exceed 0.4m. Mean surface temperature: 21°C. The climate is rated as Temperate-Warm and experiences minor seasonal changes during the local year. The atmosphere is dynamic and strong weather systems driven by the star drive across the globe. The climate is seasonal.

Satellite[edit]

Erisun retains a single natural satellite, an ice-capped vacuum worldlet named Falaise:

(IVa) Falaise (UWP Y201000-0, orbiting Erisun at 25 Diameters/325,000 km)

Mainworld Geography and Topography[edit]

Total surface area: 533 million km², Water surface area: 287 million km², Land surface area: 246 million km².

  • The atmospheric taint, caused by the high levels of atmospheric oxygen, is dangerous. Breathing the atmosphere without suitable filtration equipment will cause oxygen narcosis and oxygen toxicity. Symptoms include sensations of euphoria and nausea, seizures, bouts of physical rigidity followed by convulsions and unconsciousness, breathing difficulties, damage to the lungs and the heart, and death.

Native Lifeforms[edit]

Erisun, the mainworld, has extensive native life, consisting of microscopic organisms, stromatolite-parallels and primitive flora that can be found in almost every ecological niche. Their metabolic functions drive the process of atmospheric renewal.

The cold marginally hospitable world lying in orbital position (V) has primitive native life, consisting entirely of microscopic cyanobacteria-parallels that exist in any location where they can find even a minimal trace of shelter and warmth. Their metabolic functions maintain 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]

Erisun does not have a starport.

  • The world has no shipyard and no facilities to for repair.
  • This facility has no refueling infrastructure and can provide no fuel. Visiting craft must seek their own fuel supplies.

World technology level[edit]

Erisun possesses a Technology Level of TL–0.

  • These worlds often contain a Proto-Sophont species beginning to establish a nascent civilization and society.
  • This world is in its Alpha Period and has not yet been interfered with by a higher technology civilization.
  • Common Communication technologies for this TL include: Bodily communicative apparati, courier-runners, and smoke signals.
  • Common Power Generation technologies for this TL include: Bodily muscle.
  • Common Transportation technologies for this TL include:
    • Land: Bodily locomotion, riding beasts, and litters or sedan chairs.
    • Water: Swimming, rafts, and canoes.
    • Air: Typically not available unless a bodily ability.

World government[edit]

Erisun has no well-defined government structure.

  • 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]

No information yet available.

Trade data[edit]

No information yet available.

World Demographics[edit]

Erisun is unpopulated.

World culture[edit]

No information yet available.

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