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Planet View
Orbital Distance 4.4 AU
Orbital Period 7.1 Earth Years
Keplerian Ratio 1.69
Radius 5,899 km
Day Length 18.7 Earth Hours
Atm. Pressure 0.95 atm
Surface Temp 65 °C
Surface Gravity 0.8 g
Mass 0.679 Earth Masses
Satellites N/A

Location: Milky WayTitan NebulaHaskins System First planet

Prerequisite: N7: Abandoned Research Station (Mass Effect 2)


Baked in the fierce heat of a white sun, Capek is a rocky waterless world wrapped in a haze of hydrogen and ethane. Sulfur and iron give yellowish and black tinges to much of the planet's surface. No registered settlements appear in the records, though there are clearly metallic anomalies that indicate roofed structures.


Mineral DepositsEdit

Initial Scanner Result: Rich

Mineral Amount Approximate Value
Palladium Medium 8,200
Platinum Low 3,800
Iridium High 20,100
Element Zero Low 4,900


  • It is likely that the planet is named after Karel Čapek, the Czech writer who first introduced the word robot. His play R.U.R. (Rossum's Universal Robots) is set in a robot mass-production compound and tells a story of a robot uprising against humans caused by experiments that one of the scientists carries out on the robot's 'souls'.

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