Dinom (world)

Dinom/Lanth (Spinward Marches 1811)
Classic Era (1116)	D300535-A Starport D Poor: No Construction, Minor Repair, Unrefined fuel Size 3 Small (4,800 km, 0.24g - 0.34g) Atmosphere 0 Vacuum Hydrographics 0 Desert World 0% Population 5 Moderate (200 thousand) Government 3 Self-Perpetuating Oligarchy Law 5 Moderate Law (no concealable weapons) Tech Level A Early Stellar (jump drive)
See also	UWP
System Details
Primary	A4 V
Planetoid Belts	0
Gas Giants	1

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Jump map from Travellermap.com

Dinom is a nonindustrial vacuum world, which warrants hazardous environment precautions.

• Life in a vacuum requires great discipline. After all, it only takes one forgotten seal on a vacuum suit to spell death. Those who survive tend to be very methodically-minded and attentive to small detail.
• As a nonindustrial world, it requires extensive imports of outside technology to maintain a modern, star-faring society. The need to import most manufactured and high technology goods drives the price of these goods up in the open market.
• It is a member of the Third Imperium in the Lanth Subsector of Spinward Marches Sector in the Domain of Deneb.

Revision Details
UWP data above are from the T5 Second Survey, which supersedes these older sources:
Classic Traveller	D100535-A Starport D Poor: No Construction, Minor Repair, Unrefined fuel Size 1 Small (1,600 km, 0.05g - 0.09g) Atmosphere 0 Vacuum Hydrographics 0 Desert World 0% Population 5 Moderate (100 thousand) Government 3 Self-Perpetuating Oligarchy Law 5 Moderate Law (no concealable weapons) Tech Level A Early Stellar (jump drive)

• It is a mainworld which is a satellite of either a gas giant or another world.
• Dinom is a member of the Spinward Main.
• It lies close to the Abyss Rift, a region said to contain a strange space-time anomaly, possibly a Space Sargasso.

Description (Astrography & Planetology)

Stellar Data

Dinom has a solitary primary star.

• It is a blue-white main sequence.

Dinom has a solitary primary star.

Primary
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	A4 V	Main Sequence (Dwarf)		1.93	8100 - 8250	9.98736
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0167	0.2621	2.73 - 4.71	1.67	16.7
	Orbit #	*	0	5	4	8
	Remarks

System Data

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

• The mainworld. It occupies a relatively stable orbital position trailing behind the gas giant.
• x12 secondary rocky worlds, all former satellites of the system's gas giant.
  • They have eccentric, unstable orbits around the star and will likely eventually be ejected from the system.
• x1 gas giant, a rogue world captured by the star multiple millennia ago and stripped of its moons.

Mainworld Data

Dinom was an outer moon of a gas giant world.

Dinom is a small (4,800 kilometer diameter) vacuum world in a complex far orbit around the central star of the system. Dinom's star is a very large, very bright blue-white main sequence visible across the region, and would not normally have planets. Dinom itself is a semi-satellite – it was originally a moon of the system's gas giant, a rogue world itself captured by the star multiple millennia ago – and Dinom is now trapped in the trojan position of that gas giant, trailing behind the giant world as it orbits around the star.

• The other former moons occupy unstable orbits starward of the gas giant.

Dinom's orbital period is 1,600 years, while its axis of rotation is perpendicular to the ecliptic. The normal orbit causes precession of the axis of rotation by 0.225° per year. In 1130 the axis of rotation points directly at the primary. When in this state, Dinom's atmosphere freezes on to the "Cold Face", and the "Bright Face" is an airless ball of rock.

As the orbital precession continues, the "Cold Face" becomes gradually exposed, and the frozen atmosphere thaws and sublimates back out. By 1200, there is a trace atmosphere as the world enters its more normal daylight cycle mode. Around 1500, Dinom has a normal day/night cycle and a full atmosphere.

Mainworld Size (S)

Dinom is a Small World between 4,000km and 5,600km in diameter. The world has low gravity between 0.24G and 0.34G. The horizon will appear about 3km away.

• Surface gravity is about 0.20 G.

Mainworld Atmosphere (A)

Dinom has a pressure of less than 0.001 atmospheres which requires the use of a Vacc Suit. TL–8 or more advanced survival gear is required to settle this world.

Mainworld Hydrosphere (H)

Dinom has no free-standing water or ice on the surface. Wilderness refueling isn't possible on this world. Water for the inhabitants needs to be imported and extensively recycled. These worlds are classified Desert World or a Hell World depending on their atmosphere.

Mainworld Geography and Topography

A basic map of Dinom.

Native Lifeforms

Nestled within the abysses (which fill with gas during the gentler periods of Dinom) are the spores of life for the world. In the long changes of temperature, the spores come out and flourish when the time is right. This life is primarily composed of autotrophic forms.

History & Background (Dossier)

Settlement of this world took place only 200 years ago, just as the world was settling into a Bright Face period. The cities were established in the predicted twilight zones to take advantage of the temperate climates.

World Starport (St)

Dinom has a Class D Starport, a poor quality installation which has few of the 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 only a downport, unless this is a trade port or system with an hostile environment mainworld.

World Population (P)

Dinom has a population of 200,000 sophonts (hundreds of thousands).

• This is a Nonindustrial World, too small to support the complete chain of production of most goods from start to finish.

Urbanization

Dinom's population of 230,000 is concentrated in three large cities (named Rhylan, Medianne, and Napan) which house ore-processing centers.

• These cities, as well as outlying mining areas, are being connected by a global monorail net.

Linguistic Topography

The most commonly heard languages are:

• Riftian Galanglic, one of the principal dialects of one of the two official languages of the Imperium.
• Vilani, one of the two official languages of the Imperium.

World Technology Level (T)

Dinom possesses a Technology Level of TL–10 or TL-A in Hexadecimal Notation.

• Common Communication technologies for this TL include: Holovision, Personal Global Communications, and advanced Translators.
• Common Power Generation technologies for this TL include: Increasingly advanced fusion plants and advanced fuel cells.
• Common Transportation technologies for this TL include:
  • Land & Water: Grav belts and maturing gravcraft.
  • Air: Greatly improved hybrid grav-aircraft.
  • Space: Improved interplanetary spacecraft (System Craft).
  • FTL: Jump Drive-1.

World Government (G)

Dinom is governed by Self-Perpetuating Oligarchy. A single family or small group provides the leadership and important positions in the government. These positions are inherited by member of the group or their family members. The organization may be a monarchy, with titles passed to family members, or a plutocracy where inheritance of the family fortune includes government position. Alternatively, the organization may be a more typical government apparatus, only with positions of power inherited.

Each city is governed by a board of directors answering to the shareholder-owners (who number about 10 per city) of the ore-processing centers. Token representation for nonshareholders is also provided. The three cities send representatives to Rhylan for the World Board, which also has representation (about 10%) for the non-city dwellers. The Board is responsible for interstellar relations, system defense, industrial production, and Imperial contact.

World Law (L)

Dinom has a moderate level with laws covering many areas of government and interaction. These laws are simple enough that most people can act as their own advocate, though for serious issues a professional is recommended. Law enforcement officials will be present, but not in great numbers. Personal concealable firearms, and anything more destructive, are typically regulated or prohibited.

Imperial Landed Nobility

Dinom, as a member world of the Third Imperium has a member of the Imperial Landed Nobility who acts as an Imperial representative to the world.

• It holds the estate of an Imperial knight.

Sir Anthony Logan is the Imperial Noble overseeing the interests of the Imperium in the classic era.

Trade Data

• Importance: -1 (unimportant)

World Economy

• Resources: 8 (moderate)
• Labor: 4 (tens of thousands)
• Infrastructure: 3 (very limited)
• Efficiency: -3 (poor)

World Culture

• Heterogenity: 3 (monolithic)
• Acceptance: 4 (extremely aloof)
• Strangeness: 3 (somewhat typical)
• Symbols: 8 (somewhat abstract)

World Timeline

Major events that have affected this world and the wider region that it lies within:

• The Year 0: the Third Imperium is founded.
• 300-420: the Imperial First Survey charts the system.
• 589-604: First Frontier War.
• 604-622: the Civil War.
• 615-620: Second Frontier War.
• 624: the Express Boat Network is established.
• 800-820: the Psionics Suppressions.
• 979-986: Third Frontier War.
• 995-1065: the Imperial Second Survey charts the system.
• 1065: the Second Survey is published. Information about the system becomes widely available.
• 1082-1084: Fourth Frontier War, also known as the False War.
• 1107-1110: Fifth Frontier War.

Revision Details

UWP Data

UWP data above is from the T5 Second Survey, which supersedes these older sources:

• Classic Traveller UWP D100535-A

References

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.

• Marc Miller. The Spinward Marches (Game Designers Workshop, 1979), 22-23.
• Marc Miller. Twilight's Peak (Game Designers Workshop, 1980), 11.
• Marc Miller. Across the Bright Face/Mission on Mithril (Game Designers Workshop, 1980), 1-2,18.
• Loren Wiseman. "Crystals from Dinom." Journal of the Travellers' Aid Society 08 (1981): 10-12.
• Marc Miller. The Spinward Marches Campaign (Game Designers Workshop, 1985), 18-19.
• Marc Miller. Imperial Encyclopedia (Game Designers Workshop, 1987), 94-100. (UWP only)
• Loren Wiseman. "Lost Treasure Ships of the Abyss Rift." Challenge 44 (1990): 30-33.
• Rob Caswell. "Domain of Deneb: Sector Data." MegaTraveller Journal 3 (1992): 47-58. (UWP only)
• Dave Nilsen. The Regency Sourcebook (Game Designers Workshop, 1995), 42.
• Martin Dougherty, Neil Frier. Behind the Claw (Steve Jackson Games, 1998), 85.
• Hans Rancke-Madsen. "Worlds Within Jump-6 of Regina", JTAS Online (July 18, 2006)
• Mike West. The Spinward States (Avenger Enterprises, 2008), 104. (UWP only)
• Martin Dougherty. The Spinward Marches (Mongoose Publishing, 2008), .
• Martin Dougherty. Behind the Claw (Mongoose Publishing, 2019), 67-72. (UWP only)
• Martin Dougherty. Whispers on the Abyss (Mongoose Publishing, 2024), 72.
• Chris Slee - Across the Spinward Main Campaign
• Tony Jones - The Dinom system - Memory Lapse Megatraveller campaign