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Mass Effect 2 Planetary Database: Entry Details
Thegan
System: Hourglass Nebula
Cluster: Ploitari
Anomaly/Landable: No
Installation: Base Installation
Orbital Distance: 4.1 AU
Orbital Period: 8.3 Earth Years
Radius: 3,581 km
Day Length: 28.5 Earth Hours
Atmospheric Pressure: 0.05 Earth Atmospheres
Surface Temperature: -116 Celsius
Surface Gravity: 0.56 G
Thegan rounds out the trio of planets only scouted by space probe in this backwater solar system. A frozen ball with significant amounts of tin in its crust, Thegan has a fractional atmosphere with trace amounts of carbon dioxide and carbon monoxide. Strage radiation emissions have been charted coming off of Thegan, but it is unknown if these are from radioactive elements or merely a star's radiation reflected by a high-albedo surface.