Vieneo

From Rise: The Vieneo Province

Vieneo from 43,000 km
Discovery
Discovered by: Capt. Ruben Evans
Discovery date: February 16, 2218
Orbital characteristics
Satellite of: Iomere
Semi-major Axis: 249,390 km (0.651x Luna
Eccentricity: 0.049
Orbital Period: 11.717 d
Sidereal Period: 14.43 h
Rotations/annum: 625
Synodic Period: 14.453125 h
Longitude at epoch:
Epoch offset: 227.3607416°
Physical characteristics
Mean radius: 2939.6 km (0.46x Earth)
Surface area: 108,589,127 km2
Volume: 106,402,865,860 km3
Mass: 1.46x1024 kg (0.243x Earth)
Density: 13.78 g/cm3 (2.5x Earth)
Surface gravity: 11.314 m/s2 (1.15x Earth)
Escape velocity: 8.139 kps
Rotation: Synchronous
Obliquity: 24°
Albedo: 0.60
Hydrosphere: 13%
Cloud cover: 100%
Ice cover: 0%
Lowest elevation: 3.753 km below MSL
Highest elevation: 8.657 km above MSL
Atmospheric properties
Surface pressure: 2631 mb (2.596x Earth)
Molecular weights: 4.3 and above
Nitrogen98.4%2589 mb
Sulfur Dioxide1.0%26 mb
Oxygen0.6%16 mb
Traces of CH4, NH3, H2O, Ne, CO
Other: Terrestrial - Cold, Wet
Thick atmosphere (N2, SO2, O2 - unbreathable)
Temperatures
Averages:
DayNight
10.3°C5.1°C
Records:
HighLow
25.3°C-10.8°C
Exospheric: 799.25°K (-473.75°C Earth's)
Boiling point: H2O 128.5°C

Vieneo is a terrestrial moon and the only natural satellite of Iomere, the fourth of six planets in the Yonmaran system.

A majority of the trade outposts and settlements have occurred near or on Vieneo. The moon is rich in atmosphere, liquid water, and minerals but is devoid of indigenous life. Vieneo is the only body meeting the United Stellar Republic's suitability criteria for a radius of approximately 70 parsecs

It is believed that Vieneo was once a moon of the planet Ostlon.

Name and etymology

Vieneo is named from the Swahili word (maeneo), meaning "province" or "extent of area".

Chronology

Vieneo was discovered by Captain Ruben Evans (USV Flying Mast) on February 16, 2218 and was coincident with the discovery of the Yonmaran System. Vieneo was named in honor of the United Stellar Republic's claim and his Waswahili heritage.

Physical characteristics

Vieneo Landforms

Vieneo's surface is mostly high-density rock and inorganic compounds with only 13% of the surface covered in highly brackish water.








Tectonic plates

Vieneo Plate Tectonics

The surface has patchwork regions of broken terrain indicating intense geological activity in the moon's past, and is crisscrossed by huge canyons. Approximately 70% of this was attributed to underground faults which caused rivers to change directions and create rigid changes in elevation.





Cities

  • Deois - Capital of Vieneo

Government

See Also