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:	11.127 m/s2 (1.10x Earth)
Escape velocity:	8.139 kps
Rotation:	Synchronous
Obliquity:	24°
Albedo:	0.25
Hydrosphere:	9%
Cloud cover:	100%
Ice cover:	0%
Atmospheric properties
Surface pressure:	2631 mb (2.596x Earth)
Molecular weights:	2.9 and above
Nitrogen 77.1% 2054 mb (ipp: 2006) Helium 22.2% 592 mb (ipp: 578) Oxygen 0.4% 12 mb (ipp: 11) Argon 0.2% 7 mb (ipp: 6)
Other:	Terrestrial - Hot, Overcast Thick atmosphere (N2, He - unbreathable)
Temperatures
Averages:	Day Night 8.0°C 2.9°C
Records:	High Low 22.9°C -12.9°C
Greenhouse effect:	+4.2°C
Exospheric:	799.25°K (-473.75°C Earth's)
Boiling point:	H2O 128.5°C

Vieneo, named from the Swahili word (maeneo), meaning "province" or "extent of area") is the only natural satellite of Iomere and the only habitable body for a radius of approximately 70 parsecs.

It 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.

A majority of the trade outposts and settlements have occurred near or on Vieneo. The moon is rich in atmosphere and minerals and is able to support a variety of life, though no indigenous beings have been found. It is beleived that Vieneo was once a moon of the planet Ostlon, a gas giant near the edge of the Yonmaran System. At some time in the distant past, Ostlon was destroyed, leaving in its orbit a huge debris field containing many exotic gas and particle forms, as well as two remaining planets. By laying in-line with the galactic plane, this outer debris field encapsulated the entire system, and was partially to blame for the Yonmaran System's ability to evade sensors.

Physical characteristics

Example of Vieneo landforms

Vieneo's surface is mostly high-density rock and organic compounds with only 9% of the surface covered in highly salinic water. The surface has patchwork regions of broken terrain indicating intense geological activity in the moon's past, and is criss-crossed by huge canyons.

See Also

Cities

• Deois - Capital of Vieneo

Government

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