Hylan (world)

From Traveller Wiki - Science-Fiction Adventure in the Far future
Jump to: navigation, search

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

Hylan/Redoubt (Divide 2830)
Classic Era (1115)
StarportC Routine: No Construction, Major Repair, Unrefined fuel
Size5 Medium (8,000 km, 0.40g - 0.57g)
Atmosphere4 Thin (tainted)
Hydrographics0 Desert World 0%
Population2 Low (500)
Government3 Self-Perpetuating Oligarchy
Law3 Low Law (no automatic weapons)
Tech Level6 Pre-Stellar (nuclear)
See also UWP
System Details
Primary M0 III
Planetoid Belts 1
Gas Giants 3
Jump map from Travellermap.com [1]

Hylan is a poor, low-population desert hellworld, with a population of less than 10,000 sophonts struggling to survive in a inhospitable environment.

  • Living on a hellworld is a constant struggle. Nearly every day and sometimes even hourly, the inhabitants of this world face life-threatening challenges.
  • This world has no free-standing water.
  • It is a Non-Aligned world dominated by human sophonts located in the Redoubt Subsector of Divide Sector.

Astrography and Planetology[edit]

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

Monostellar System[edit]

Hylan Monostellar System
Star Name Hierarchy Color Classification Remarks
Hylan Primary Red M0 III

System Data[edit]

Cardor-Hylan System[edit]

The primary is Cardor, a huge red giant star. It has a luminosity of 470 Sols, a mass of 6.3 Sols, and a diameter of 87.7 million km – the corona extends as far as 0.29 AU, beyond orbital position (I). The inner system consists of (II) a very hot small gas giant, (V) a sparse stony planetoid belt, (VI) a trace atmosphere inner world, (VII) an exotic atmosphere stormworld, and (VIII) a corrosive atmosphere inferno world – orbital position (I) lies within the star and orbital positions (III) and (IV) are empty. (IX) Aether orbits within the habitable zone and is designated the mainworld. (X) a thin atmosphere hospitable world, (XI) a ringed large gas giant, and (XII) a small ice giant form the outer system. Many of the worlds retain satellites.

Mainworld Data[edit]

(IX) Hylan[edit]

(IX) Hylan is designated the mainworld. It orbits Cardor at a mean distance of 20.2 AU (3 billion km), within the habitable zone. It has an orbital period of 36 years 63 days and a rotation period of 34.5 hours. The axial tilt is 19 degrees. Hylan has a diameter of 7,935 km, a density of 4.99 g/cm³, and a surface gravity of 0.56 G. The world is geologically active. Its atmosphere is rated as Thin, Tainted, with a mean surface pressure of 0.57 bar and a composition of 81% nitrogen, 18% oxygen, and 1% argon, carbon dioxide, neon and other trace gases. The taint is caused by the extremely low humidity within the atmosphere, which causes respiratory problems if breathed. Hylan is a desert world: approximately 0.3% of the surface is covered in lakes of liquid water. Mean surface temperature: 45°C. The climate is rated as Hot and experiences moderate seasonal changes during the local year. The atmosphere is dynamic and strong weather systems driven by the star sweep across the globe.


Hylan retains two natural satellites, an exotic atmosphere stormworld named Montain and a trace atmosphere worldlet named Purnell:

(IXa) Montain (UWP Y3A0000-0, orbiting at 40 Diameters/318,000 km)
(IXb) Purnell (UWP Y110000-0, orbiting at 45 Diameters/357,000 km)

Mainworld Geography and Topography[edit]

Total surface area: 198 million km², Land surface area: 197.4 million km², Water surface area: 600,000 km².

Native Lifeforms[edit]

Hylan, the mainworld, has primitive native life, consisting entirely of subsurface cyanobacteria-parallels that exist in any location where they can find even a minimal trace of moisture. Their metabolic functions maintain the process of atmospheric renewal.

The cold marginally hospitable world lying in orbital position (X) (within the H+ region of the outer system) has primitive cryophile native life, consisting entirely of microscopic cyanobacteria-parallels that thrive in the harsh conditions. 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]

Hylan 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[edit]

Hylan possesses a Technology Level of TL–6.

  • Common Communication technologies for this TL include: Telephone, radio, and television.
  • Common Power Generation technologies for this TL include: Early fission power generation, advanced water and wind generation of electricity.
  • Common Transportation technologies for this TL include:
    • Land: Improved automobiles, early ATV's, and dedicated AFV's.
    • Water: Amphibious vehicles, improved submersibles, and early SCUBA gear.
    • Air: Early jet aircraft and rotorcraft VTOL's.
    • Space: Early unmanned rocket delivery systems and early manned orbital rockets.

World government[edit]

Hylan has a Self-Perpetuating Oligarchy government.

  • It is a government by a restricted minority, with little or no input from the masses.
  • The typical power source of this government is an Oligarchy.
  • The typical power structure of this government is a Hegemony.

World military[edit]

No information yet available.

World economy[edit]

No information yet available.

Trade data[edit]

No information yet available.

World demographics[edit]

No information yet available.

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]

62px-Information icon.svg.png This article is missing content for one or more detailed sections. Additional details are required to complete the article. You can help the Traveller Wiki by expanding it.

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