Distance from the Sun about 58 (57.93) million km.
The length of the day today on the Mercury around 176 Earth days.
Mercury completes its year around the sun in about 88 (87.97) Earth days.
Diameter The diameter of Mercury at the equator about 4878 km.
Cluster mass Mercury about 3.30 * 1023 kg.
The first planets of the solar system and the closest to the sun, as Mercury occupies the eighth place among the planets in terms of size.
Mercury is a rocky planet, covering the surface of surface rock heart, a huge iron, interestingly, on this planet is its surface is full of Balfohat left by meteorites that hit him over the years, full of Mercury's surface also Pintoouat many believed they were formed when the cold pulp warm the planet and has declined since about 4 billion years old, has led this process to inflate the planet's surface.
Atmosphere of Mercury is very thin almost non-existent, he got from the solar wind.
But because of the steep rise in the temperature of the planet - as well as its small size - the molecules of gas constituents of the atmosphere escapes to outer space because of the increased speed drop on the planet's gravity, the opposite of what happens in the planetary Earth and Venus, where the atmosphere are unstable.
Temperatures on Mercury are very high but it is not stable, ranging between 90: 700 Kelvin, or about
-183: 427 degrees Celsius. And this difference is due to two things: first, the slow cycle of Mercury on its axis it completes it in 59 Earth days and, secondly, the lack of atmosphere or rather a rarity.
There are no satellites orbiting the planet Mercury.
Was long believed that the day on Mercury is equal to his Sunnah and given that Mercury keeps the same face in front of the sun, but in 1965 this belief is proven wrong by the observations obtained by Doppler radar. It has been proven that Mercury is 3 sessions during the day solar, if Mercury is at its session in about 59 Earth days, the solar day on Mercury (from sunset to sunset) is equal to about 177 Earth days any longer than two times of the year on Mercury, which is equal to about 88 Earth days .