Mars Facts and Figures
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| Equatorial Diameter (Km) |
6790 |
12,756 |
| Mass (% of Earth's) |
0.1074 |
1.0 |
| Mean Density (g/cm3) |
3.94 |
5.517 |
| Surface Gravity (rel Earth) |
0.3799 |
1.0 |
| Escape Velocity |
5.03 |
11.18 |
| Average Dist from Sun (km) |
227.94 x 106 |
149.60 x 106 |
| Avg Dist from Sun (AU) |
1.524 |
1.0 |
| Sidereal year (Days) |
686.980 |
364.256 |
| Sidereal Day (Hr) |
24h 37m |
23h 56m |
| Air Pressure (kPa) |
0.7 - 0.9 |
100 - 101 |
| Number of Moons |
2 |
1 |
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kPa - Kilo Pascals. 1 Pascal = the force in Newtons per square Metre
Sidereal
Time - Based on the time taken for a fixed star to appear in the same position
due to planetary rotation.