Vieneo

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:	0°
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:	24.77147°
Albedo:	0.60
Hydrosphere:	13%
Cloud cover:	100%
Ice cover:	0%
Lowest elevation:	1.968 km below MSL
Highest elevation:	9.529 km above MSL
Atmospheric properties
Surface pressure:	2630 mb (2.596x Earth)
Scale height:	6.923 km mb (0.815x Earth)
Molecular weights:	4.3 and above
Nitrogen 98.4% 2589 mb Sulfur Dioxide 1.0% 26 mb Oxygen 0.6% 16 mb Traces of CH4, NH3, H2O, Ne, CO
Other:	Terrestrial - Cold, Wet Thick atmosphere (N2, SO2, O2 - unbreathable)
Temperatures
Sea Level Average:	Day Night 21.4°C 16.2°C
Extremes:	High Low 47.3°C -55.0°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.

Plate Tectonic

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.

Earthquakes

Vieneo Earthquakes in 2242

Compared to Earth, Vieneo experiences less frequent quakes but with a higher magnitude on the order of 1 to 2 Richter units (10-100 times the energy output).

Cities

• Deois - Capital of Vieneo

Government

• United Stellar Republic - Governing body for this region
• Vieneo Land Management - Purchase and transfer land deeds

See Also

• Ground Track