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Glim (HD 223889)

Inner Sphere system; former member of the Doran Empire

Glim; a carbon world
Image from Steve Bowers
Konsheir has a carbon-rich surface, with hydrocarbon lakes and a diamond-rich regolith

Glim - Data Panel

SystemNames: Glim
Location:
- Distance from Dorangloon: 5.315 ly (J2000)
- Distance from Sol: 33.00 ly (J2000)
- Constellation: Octans
Reached: 1711 by colonists from Dorangloon
StarNames: Glim, HD 223889, HIP 117828
Physical characteristics:
- Mass: 0.52 x Sol
- Radius: 0.52 x Sol
- Luminosity: 0.046 x Sol (bolometric)
- Temperature: 3,710 Kelvin
- Spectral type: M0 V
System:
1) Konsheir: TholiTerrestrial CarboTelluric LapiMinervan LacuTundral PetroGaian
Semi-major axis = 0.676 AU, Orbital period = 281.5 days, Eccentricity = 0.061, Mass = 0.775 x Earth, Radius = 0.926 x Earth
2) Grzaud: MethoTerrestrial CarboTelluric CereRhean ConleTundral TitanoAzoGaian
Semi-major axis = 3.954 AU, Orbital period = 10.90 years, Eccentricity = 0.080, Mass = 0.221 x Earth, Radius = 0.693 x Earth
Glim
Image from Steve Bowers
Konsheir is a carbon world, rich in hydrocarbons but deficient in water

A system containing two carbon worlds - the temperate Konsheir and the frigid Grzaud. The system was a founding member of the Doran Empire, but later seceded in 2638.

Konshier has a surface rich in carbon allotropes and compounds, but poor in oxygen; despite having vast reserves of hydrocarbons, the lack of oxygen makes these reserves unusable as fuel in situ. The planet is instead an important source of carbon for construction and organic chemicals for complex synthetic products.

Any free oxygen on this world, or on any comparable carbon world, would quickly combine with the reduced carbon compounds on the surface. Glim's atmosphere consists mostly of nitrogen and carbon dioxide, with traces of argon, neon and methane. Colonies on the surface of Glim are generally inhabited by non-biological sophonts which do not require oxygen, or by artificially-adapted bionts who do not require free oxygen.

Any bionts who do require an oxygen atmosphere live in hermetically sealed habitats which separate the oxygen safely away from the local environment; if the atmosphere of such a habitat escapes, the gases represent a fire risk if they come into contact with hydrocarbon liquids or gases. In most cases, such leaked gases quickly combine with local flammable molecules by oxidation and become safe.
 
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Development Notes
Text by Mark Ryherd, updated by The Astronomer 2021 and Steve Bowers 2025
Initially published on 17 November 2010.

 
Additional Information
As no information on the star could be found, I relied on Mamajek's star relations for its properties.
 
 
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