MERCURY
- Diameter at equator- 4880 km.
- Mean distance from the Sun — 57.9 million km.
- Orbits Sun in — 88 days.
- Rotates on axis in — 59 days.
- Number of satellites --- (,.
- Mass — 0.55times that of Earth.
- Surface gravity — 0.37 times that of Earth.
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| Alifye - The Solar System - Mercury |
It is nearest to the Sun and is fastest moving. Mercury has no detectable atmosphere. Being closer to the Sun than we are, a unit area at the noon — point on Mercury receives nearly seven times solar energy as a corresponding area on the Earth. Its surface temperature at noon reaches 600 K°.
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