Isochort (world)

Isochort/Coos (Vanguard Reaches 2305)
Classic Era (1116)	E998321-9 Starport E Frontier - no facilities Size 9 Large (14,400 km, 1.03g - 1.33g) Atmosphere 9 Dense (tainted) Hydrographics 8 Wet World 80% Population 3 Low (4 thousand) Government 2 Participating Democracy Law 1 Low Law (no explosives, poison gas) Tech Level 9 Early Stellar (fusion)
See also	UWP
System Details
Primary	K5 V
Planetoid Belts	0
Gas Giants	4

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Jump map from Travellermap.com

Isochort is a low-population world with a population of less than 10,000 sophonts in size.

• This world has yet to take off economically or otherwise and the population remains low for reasons largely unknown.
• This world is a member of the Trelyn Domain (the Duchy of Trelyn) located in the Coos Subsector of Vanguard Reaches Sector.

• This is a hot world, with temperatures above those comfortable to Human sophonts.

Description (Astrography & Planetology)

Isochort has a solitary primary star.

Isochort
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	K5 V	Main Sequence (Dwarf)		0.7	4300 - 4440	0.28697
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0065	0.0444	0.56 - 1.01	0.65	6.5
	Orbit #	*	*	2	2	6
	Remarks

System Data

The worlds of the system have been surveyed. They consist of:

• The mainworld.
• x7 secondary rocky worlds.
• x4 gas giants.

Mainworld Data

Mainworld Size (S)

Isochort is a Big World between 13,600km and 15,200km in diameter. The world has a standard gravity between 1G and 1.3G. The horizon will appear about 5.4km away. Vessels with only 1G of thrust should avoid landing on this world.

Mainworld Atmosphere (A)

Isochort has a pressure of 1.50 to 2.49 atmospheres. While a Dense Atmosphere requires no survival gear this atmosphere also contains an unusual taint such as disease, a hazardous gas mix, pollutants, or sulfur compounds which requires the use of a Filter Mask. Some taints may require more protective equipment. TL–3 or more advanced survival gear is required to settle this world.

Mainworld Hydrosphere (H)

Isochort has 75-85% of its surface covered by liquid water with a few large continents and extensive islands. Wilderness refueling is possible.

Mainworld Geography and Topography

No centrally held map of the world exists within AAB Library Data records.

History & Background (Dossier)

To comply with the terms of its Imperial charter, the Allarton Corporation, the Imperial corporation underpinning the Trelyn Domain, is limited to operations exclusively within the Trelyn Subsector of Vanguard Reaches Sector. Allarton officials and representatives may occasionally conduct business on other worlds of the Domain.

• Corporate operations in other areas of the Vanguard Reaches are conducted under the wholly owned Pan-Melesien Company.
• Corporate operations in the Far Frontiers Sector are conducted under the wholly owned Artesian Company, based at Yster.

Both subsidiary companies may be active on worlds far beyond their official operating areas.

World Starport (St)

Isochort has a Class E Starport, a frontier quality installation with few expected amenities. There is unrefined fuel for starships and a limited variety of ship provisions. There is no shipyard of any kind, but there may be parts and technical support for doing minor services and repair. Ports of this classification generally consist of a downport.

World Population (P)

Isochort has a population of 4,000 sophonts (thousands).

• This is a Low Population World and the population would be too low to sustain itself without a little outside assistance. This may represent the home base of a sizable but mostly transient population such as the base of a major starship expedition, the last generation of a dying colony, the first generation of a new colony, or a large outpost that will probably evolve into a colony if not stopped.

World Technology Level (T)

Isochort possesses a Technology Level of TL–9.

• Common Communication technologies for this TL include: Fiber optics and satellite communication and data networks.
• Common Power Generation technologies for this TL include: Early fusion power.
• Common Transportation technologies for this TL include:
  • Land: Ultra high-speed trains and early grav vehicles.
  • Water: High efficiency sailcraft, multihulled seacraft, improved artificial gills.
  • Air: Tiltrotorcraft, exotic VTOL's, PARWIG, and rocket-assisted suborbitals.
  • Space: SSTO spacecraft, early military spacecraft (System Craft), and interstellar STL starships
  • FTL: Prototype Jump Drive-1.

World Government (G)

Isochort is governed by a Participatory Democracy where eligible voters determine laws and policy. What determines an eligible voter varies. There may be smaller councils or regional bodies to draft the policies voted upon. Leadership of the government and all members of the bureaucracy are determined by the voting population.

World Law (L)

Isochort has a low law level. There are few laws, covering only important areas. There may be few or no law enforcement officers, the expectation is citizens will bring law breakers to the attention of the Judicial system. Legal proceedings will be fast, with few people involved. For interactions outside of the framework of the laws, cultural norms dominate. Body pistols, explosives, and poison gas are typically regulated or prohibited.

Trade Data

• Importance: -2 (very unimportant)

World Timeline

• 300-420: the First Survey charts the system.
• 995-1065: the Second Survey charts the system.
• 1065: the Second Survey is published.

References & Contributors (Sources)

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Mongoose Publishing or by permission of the author. The page history lists all of the contributions.

• Chuck Kallenbach. Classic Traveller Vanguard Reaches, (Paranoia Press, 1981), various pages. (original data)
• J. Andrew Keith, Marc Miller, John Harshman. Classic Traveller Aslan, (Game Designers Workshop, 1984), inside back cover. (the Zhodani; sector named and subsector depicted but no further data)
• J. Andrew Keith, Marc Miller, John Harshman. Classic Traveller Zhodani, (Game Designers Workshop, 1985), inside front cover. (the Zhodani; sector named and subsector depicted but no further data)
• Peter G. Celella, James Holden. Solomani & Aslan (Digest Group Publications, 1991), Pages 11, 50. (dot map provided)
• Chuck Kallenbach. External Link: Vanguard Reaches online updates, 1991.
• David L. Pulver. GURPS Traveller: Alien Races 1, (Steve Jackson Games, 1998), Pages 5-63. (the Zhodani)
• Don McKinney. Mongoose Traveller: Zhodani, (Mongoose Traveller, 2011), 188 pages. (the Zhodani)
• Geir Lanesskog. Mongoose 2nd The Spinward Extents (Mongoose Publishing, 2022), various pages. (sector data and background)