Orbital eccentricity
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| MARS
DATA |
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| Orbital parametres | ||||
| Distance from Sun (semimajor axis) | 227.9 million km | (1.52 AU) | ||
| Minimum distance (perihelion) | 206.6 million km | (1.40 AU) | ||
| Maximum distance (aphelion) | 249.2 million km | (1.64 AU) | ||
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Orbital eccentricity |
0.093 | |||
| Length of year (orbital period) | 686.9 days | (1.88 years) | ||
| Length of day (rotational period) | 24.62 hours | (1.02 days) | ||
| Average orbital velocity | 24.13 km/s | |||
| Orbital inclination | 1.85 degrees | |||
| Axial tilt (obliquity) | 25.19 degrees | More about planetary orbits | ||
| Physical Properties | ||||
| Equatorial radius | 3,397 km | (0.53 x Earth) | ||
| Mass | 0.642 x1024 kg | (0.11 x Earth) | ||
| Volume | 16.32 x1010 km3 | (0.15 x Earth) | ||
| Average density | 3,934 kg/m3 | (0.71 x Earth) | ||
| Oblateness | 0.0065 | |||
| Surface gravity at equator | 3.71 m/s2 | (0.38 x Earth) | ||
| Escape velocity | 5.03 km/s | (0.45 x Earth) | ||
| Solar irradiance | 589 Watts/m2 | (0.43 x Earth) | ||
| Surface temperature | 133 to 293 K | (-140 to 20o C) | ||
| Albedo | 0.15 | |||
| Maximum visual magnitude | -2.9 | |||
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