Duna
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Duna
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| Orbital Parameters | |||||
| Apoapsis | 13,599,840,000m | ||||
| Periapsis | 13,599,840,000m | ||||
| Semi-major axis | 13,599,840,000m | ||||
| Orbital eccentricity | 0 | ||||
| Orbital period (sidereal) | 426.0900463 days | ||||
| Average orbital speed | 9.825km/s | ||||
| Mean anomaly | 179.909° | ||||
| Inclination | 0° | ||||
| Satellites | 1 permanent natural satellite; Ike | ||||
| Physical Characteristics | |||||
| Equatorial radius | 600,000m | ||||
| Circumference | 3,769,911m | ||||
| Surface area | 4.5238934×1012m2 | ||||
| Mass | 5.97217×1024kg | ||||
| Mean density | 58,484.090 kg/m3 | ||||
| Surface gravity | 9.81m/s<sup2 (1g) | ||||
| Escape velocity | 3.431km/s | ||||
| Sidereal rotation period | 21,549.425s (5h,59m,9.4s) | ||||
| Solar day | 21,600s (6h,0m,0s) | ||||
| Axial tilt | 0° | ||||
| Surface equivalent dose rate | 0.268μSv/h | ||||
| Surface atmospheric pressure | 101.325kPa (1 atm) | ||||
| Sphere of influence | 84,159,286m | ||||
| History | |||||
| Discovered | Prehistoric times | ||||
| Landed upon | some time later | ||||