Grille (world)

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Grille/Mora (Spinward Marches 3026)
Milieu 1116
StarportE Frontier - no facilities
Size4 Small (6,400 km, 0.32g - 0.46g)
Atmosphere1 Vacuum (trace)
Hydrographics0 Desert World 0%
Population3 Low (7 thousand)
Government3 Self-Perpetuating Oligarchy
Law5 Moderate Law (no concealable weapons)
Tech Level7 Pre-Stellar (electronics)
See also UWP
System Details
Primary M2 V M2 V
Worlds 12
Gas Giants 1
Planetoid Belts 0
Cultural Details
Government Self-perpetuating oligarchy
Law Level Moderate
Cultural Extension 1135
Army Size (BEs) 0
Economic Details
Technology Level 7
Economic Extension
Labor2Low (700)
Infrastructure1 Extremely limited
Efficiency-5Extremely poor
Importance Extension -3
Resource Units 5
GWP (BCr) 0
World Trade Number 2
Trade Volume (MCr/year) 0
Starport Details
Classification Class-E
Port Size 0
Building Capacity (Tons) 0
Port employees 0
Port passengers (annual) 0

Grille supports a population of fewer than 10,000 sophonts. This is a temperate world, with a climate of average temperatures. It is a member of Third Imperium in the Mora Subsector of Spinward Marches Sector and in the Domain of Deneb. Grille, as a member world of the Third Imperium, holds the estate of an Imperial knight, a member of the Imperial Nobility charged with overseeing the world.

Astrography & Planetology[edit]

Grille is a member of the Spinward Main. Grille has relatively little contact with the rest of the Marches.

Binary Solar System[edit]

Grille Binary Star System
Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol)
Grille primary

M2 V

Primary Main Sequence 0.4258 2400 - 3300 0.027
Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit
AU 0.0044 0.01358 0.13 - 0.21 0.44 4.4
Orbit #  *  * 0 1 6
Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol)
Grille companion

M2 V

Secondary Main Sequence 0.4258 2400 - 3300 0.027
Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit
AU 0.0044 0.01358 0.13 - 0.21 0.44 4.4
Orbit #  *  * 0 1 6

IISS GURPS Astrographics Survey[edit]

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.

System Data[edit]

Grille is a binary star system with two nearly identical red giant stars. These are in extreme orbit around a common center of gravity. The slightly larger of the two is designated as the Primary and has eleven very small planets in orbit. All of these are made up of rock or ice or both and have no usable resources.

The smaller star is designated as the secondary and has a system consisting of a single gas giant past the habitable zone in what would be its outer system.

The gas giant in the system is called Vengeance and is made up of hydrogen and helium with other trace elements. It has five significant moons of which the largest, Grille, has become the mainworld of the system.

Mainworld Data[edit]

The mainworld of Grille is the largest moon of the system's one gas giant, Vengeance. It is the only solid object of appreciable size in the system and orbits well beyond the system's habitable zone.

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 Geography & Topography[edit]

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.

Native Lifeforms[edit]

Grille has no native life.

History & Background (Dossier)[edit]

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

Imperial High / Landed Nobility[edit]

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[edit]

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[edit]

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[edit]

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[edit]

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[edit]

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[edit]

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[edit]

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[edit]

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[edit]

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


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[edit]

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[edit]

  • (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 my mining interests.

UWP Listing[edit]

  • 1105 E410335-7 ImDd

References & Contributors (Sources)[edit]

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 Far Future Enterprises or by permission of the author. The page history lists all of the contributions.