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Facts about Mars
Hubble's close encounter with Mars
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Orbit |
227 940 000 km (1.52 AU) mean distance from Sun |
Diameter |
6794 km |
Martian day (sol) |
24 hours, 37 mins 22 seconds |
Martian year |
669 Martian days (sols), 687 Earth days |
Average temperature |
218 K (-55 degrees C) |
Minimum temperature |
140K (-133 degrees C) (winter pole) |
Maximum temperature |
300K (27 degrees C) (summer dayside) |
Surface area |
144 x 106 km2, about the same as the land area of Earth |
Atmospheric pressure at surface |
6.35 mbar, that is less than one hundredth Earth's atmospheric pressure. |
Atmospheric composition |
95.32% carbon dioxide, 2.7% nitrogen, 1.6% argon, 0.13% oxygen |
Moons |
Phobos - diameter 22 km, orbit 5981 km from surface Deimos - diameter 12 km, orbit
20,062 km | | |
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