Grille (world)

250 px

Grille/Mora (Spinward Marches 3026)
Classic Era (1116)	E410335-7 Starport E Frontier - no facilities Size 4 Small (6,400 km, 0.32g - 0.46g) Atmosphere 1 Vacuum (trace) Hydrographics 0 Desert World 0% Population 3 Low (7 thousand) Government 3 Self-Perpetuating Oligarchy Law 5 Moderate Law (no concealable weapons) Tech Level 7 Pre-Stellar (electronics)
See also	UWP
System Details
Primary	M2 V M2 V
Planetoid Belts	0
Gas Giants	1

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Jump map from Travellermap.com

Grille 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.
• It is a member of the Third Imperium in the Mora Subsector of Spinward Marches Sector in the Domain of Deneb.
• It is a mainworld which is a satellite of either a gas giant or another world.
• This is a temperate world, with a climate of pleasant, average temperatures, considered to be an ideal or near-ideal environment by many different sophont species.
• Grille is a member of the Spinward Main.
• It lies on the Mora Arm.

Grille System
Mora/Spinward Marches 3026
Position	Distance	Name	UWP
Primary		'	M2 V
1	0.08 AU	Rocky World	???????-?
2	0.14 AU	Rocky World	???????-?
3	0.26 AU	Rocky World	???????-?
4	0.34 AU	Rocky World	???????-?
5	0.45 AU	Rocky World	???????-?
6	0.61 AU	Rocky World	???????-?
7	0.88 AU	Rocky World	???????-?
8	1.21 AU	Icy World	???????-?
9	1.66 AU	Icy World	???????-?
10	2.35 AU	Icy World	???????-?

Grille Companion System
Mora/Spinward Marches 3026
Position	Distance	Name	UWP
Primary		'	M2 V
1	0.43 AU	Vengeance	Large GG
1	4 Diam	Moon	Y200000-0
2	7 Diam	Wespe	H3A0000-0
3	11 Diam	Moon	Y100000-0
4	20 Diam	Moon	Y200000-0
5	35 Diam	Grille	E410335-7

Description (Astrography & Planetology)

Stars

Grille is a binary star system.

• Both are red main sequence stars.

Grille has two stars in the star system.

Primary
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	M2 V	Main Sequence (Dwarf)		0.44	3470 - 3560	0.0565
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0041	0.0197	0.25 - 0.48	0.41	4.1
	Orbit #	*	*	1	1	6
	Remarks		None
Companion
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	M2 V	Main Sequence (Dwarf)		0.44	3470 - 3560	0.0565
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0041	0.0197	0.25 - 0.48	0.41	4.1
	Orbit #	*	*	1	1	6
	Remarks		None

Grille has relatively little contact with the rest of the Marches.

System Data

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

• The mainworld. It is the largest moon of the system's only gas giant.
• x10 secondary rocky worlds, all orbiting the system's primary star.
• x1 gas giant, named Vengeance, orbiting the system's secondary star.
  • The mainworld is the largest of its five major moons.

Grille is a binary star system with two nearly identical small red stars. These are in extreme orbit around a common center of gravity. The slightly larger of the two is designated the Primary and has ten very small rocky and icy planets orbiting it. They have few exploitable resources. The smaller secondary star's planetary system consists of a single gas giant, orbiting in the outer part of its habitable zone.

Mainworld Data

Grille is the largest moon of the system's solitary gas giant, Vengeance.

600 px

The mainworld and its gas giant primary orbit within the star's Habitable Zone.

• They lie within the zones colder outer H- region.
• They receive lower levels of stellar energy.

The initial survey of Grille indicated its density was higher than would be expected for an object of its size. This led to the assumption that it contained a significant amount of heavy elements. Prospectors have located deposits of gold, platinum, palladium and cobalt. None of the deposits has been particularly large.

The entire population of Grille resides in a single permanent community near the downport. Approximately 70% of the population is made up of transient prospectors and miners who move to exploit mineral deposits as they are located. The rest of the population exists to service this only industry.

Mainworld Size (S)

Grille is a Meso World between 5,600km and 7,200km in diameter. The world has low gravity between 0.32G and 0.46G. The horizon will appear about 3.6km away.

Mainworld Atmosphere (A)

Grille has a pressure of less than 0.1 atmospheres which requires the use of a Vacc Suit. TL–8 or more advanced survival gear is required to settle this world.

• It experiences low temperatures.

Mainworld Hydrosphere (H)

Grille 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

Grille is a rocky and barren world with a trace atmosphere containing nitrogen and a small amount of oxygen. Residents of the community on Grille generate breathable air by drawing in and concentrating this atmosphere. There is no open water on Grille and only minimal amounts of water ice on its surface.

The moon is well outside the system's habitable zone. Temperatures range from cold (-40C) to extremely cold (-140C). Despite this the lack of appreciable atmosphere will cause objects left in direct light from the Secondary to become super heated. The world is within Vengeance's magnetic field, partially shielding it from harmful stellar radiation.

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

(Blank map, predominantly dry world.)

Native Lifeforms

Grille has no native life.

History & Background (Dossier)

Grille has been a mining colony since some time in the 800s.

Imperial High / Landed Nobility

Grille is nominally governed as a fiefdom of the Baronet of Westland. However that title is not currently in use by any member of the Imperial aristocracy. The last titleholder died without issue in 1032 and the title returned to the Imperial Crown. As yet it has not been granted to anyone else.

World Starport

Grille Downport is a small leveled pad. At various times in the past it has offered refined fuel for sale but there is currently no ongoing operation to fill its reserve tanks. A restaurant is available and minimal supplies available at TL-7 may be purchased at an adjacent store.

World Technology Level

Grille's tech level of 7 represents the current manufacturing level. Residents of the world generally possess sufficient equipment to survive, nearly everyone owns at least one vacc suit for instance. Prospectors and miners typically come from offworld with equipment suited for operations in the near-vacuum.

World Government

While the non-existent Baronet Westland is the titular leader, a group of long-term residents and business owners form a council that makes important decisions and levies taxes in the Baronet's name.

World Law Level

The small community of Grille has a police department consisting of a constable and six deputies. These law enforcers are armed and authorized to conduct arrests anywhere on the moon. In practice they rarely leave the settlement. Because everyone lives in connected pressurized dwellings, the possession of firearms capable of penetrating such dwellings is prohibited when at the settlement. Gear carried outside of the settlement is not monitored or restricted.

World Military

There is no Imperial or local military force on Grille. The world used to have a Scout/Courier which was intended as an emergency measure to call for help in the event of invasion, but the ship was either lost or stolen in 1093 and has not been returned.

World Economy

Grille's economy is based entirely on servicing miners who come to the world to exploit its mineral resources. Occasionally vessels will stop for some other reason or to trade with the locals but most ships use the gas giant as a refueling stop and do not call at the mainworld.

While Grille has had some successful mining concerns, it is not known for making people rich. The significant surface deposits that were once found here have mostly been depleted and deeper mining operations have been started in several places. These have a higher cost, due to the lack of atmosphere and local resources, so profits have suffered. No major corporations still operate mines, the remainder are small private firms hoping to find something the big companies missed.

Trade Data

Grille is not on a major trade route, but is often visited by ships refueling between Maitz and Fornice. There have been occasional reports of piracy in the Grille system.

World Demographics

Grille's population is entirely made up of Imperial humans of mixed Vilani/Solomani descent. As of 1103 there were 2037 permanent residents. Most of the population is non-native having moved to the world from Maitz, Fornice or Mora.

World Culture

Grille's native population is too small to support a unique culture. Cultural norms from Fornice are most common.

Urbanization

Grille has a single community resembling a town of connected pressure-tight buildings. The buildings are designed so that there are multiple connections and backups so that a single leak will not expose the entire town to vacuum.

Historical Data

Grille was first visited at an unknown time during the Long Night. Remnants of a prospecting outpost and a navigation beacon were discovered by an IISS survey ship in the mid-400s, but the world was uninhabited. It is not known exactly when the world was resettled, but visitors likely came gradually between the 800s and 1000s. As different groups came to prospect for minerals, some remained on a more permanent basis.

World Timeline

• (Long Night): Grille is believed to have been first colonized. The colony later died out.
• (400's): The IISS discovers ruins and remnants of an earlier colony.
• (800's): A new colony is slowly reestablished by mining interests.

UWP Listing

• 1105 E410335-7 ImDd

Trade Data

• Importance: -3 (very unimportant)

World Economy

• Resources: 5 (scarce)
• Labor: 2 (hundreds)
• Infrastructure: 0 (non-existent)
• Efficiency: -5 (extremely poor)

World Culture

• Heterogenity: 1 (monolithic)
• Acceptance: 1 (extremely xenophobic)
• Strangeness: 3 (somewhat typical)
• Symbols: 5 (concrete)

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.
• 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.

---

IISS GURPS Astrographics Survey

3026 Grille (Imperial)

Starport: Class I.

Diameter: 4,052 miles (6,500 km).
Atmosphere: Trace oxygen-nitrogen.
Hydrographics: None.
Climate: Normal.
Population: 2,000.
Government: Oligarchy (hereditary nobility).
Control Level: 2.
Tech Level: 7.
World Trade Number: 2.0.

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.

• Marc Miller. The Spinward Marches (Game Designers Workshop, 1979), 32-33.
• Marc Miller. The Spinward Marches Campaign (Game Designers Workshop, 1985), 18-19.
• Marc Miller. Imperial Encyclopedia (Game Designers Workshop, 1987), 94-100. (UWP only)
• Rob Caswell. "Domain of Deneb: Sector Data." MegaTraveller Journal 3 (1992): 47-58. (UWP only)
• Dave Nilsen. The Regency Sourcebook (Game Designers Workshop, 1995), 46-47. (UWP only)
• Martin Dougherty, Neil Frier. Behind the Claw (Steve Jackson Games, 1998), 114.
• Mike West. The Spinward States (Avenger Enterprises, 2008), 114. (UWP only)
• Martin Dougherty. The Spinward Marches (Mongoose Publishing, 2008), .
• Martin Dougherty. Behind the Claw (Mongoose Publishing, 2019), 103-107. (UWP only)
• Contributor: --Matthew Kerwin Baron Thon