Pictured in natural color in 2007 |
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Pronunciation | |
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Adjectives | Martian |
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Epoch J2000 |
Aphelion | 249200000 km (154800000 mi; 1.666 AU) |
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Perihelion | 206700000 km (128400000 mi; 1.382 AU) |
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| 227939200 km (141634900 mi; 1.523679 AU) |
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Eccentricity | 0.0934 |
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| 686.971 d (1.88082 yr; 668.5991 sols) |
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| 779.96 d (2.1354 yr) |
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| 24.007 km/s (86430 km/h; 53700 mph) |
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Inclination | |
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| 49.558° |
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| 286.502° |
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Satellites | 2 |
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Mean radius | 3389.5 ± 0.2 km (2106.1 ± 0.1 mi) |
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| 3396.2 ± 0.1 km (2110.3 ± 0.1 mi; 0.533 Earths) |
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| 3376.2 ± 0.1 km (2097.9 ± 0.1 mi; 0.531 Earths) |
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Flattening | 0.00589±0.00015 |
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| 144798500 km2 (55907000 sq mi; 0.284 Earths) |
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Volume | 1.6318×1011 km3 (0.151 Earths) |
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Mass | 6.4171×1023 kg (0.107 Earths) |
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| 3.9335 g/cm3 (0.1421 lb/cu in) |
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| 3.72076 m/s2 (12.2072 ft/s2; 0.3794 g) |
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| 0.3662±0.0017 |
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| 5.027 km/s (18100 km/h; 11250 mph) |
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| 1.025957 d 24h 37m 22s |
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Equatorial rotation velocity | Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). |
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| 25.19° to its orbital plane |
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| 317.68143° 21h 10m 44s |
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| 52.88650° |
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Albedo | |
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| −2.94 to +1.86 |
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| 3.5–25.1″ |
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| 0.636 (0.4–0.87) kPa 0.00628 atm |
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Composition by volume | |
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