Mercury is the fastest planet in the Solar System. It is also the closest to the sun and smallest planet in the solar system. The orbital period of Mercury is about 88 Earth days.Mercury appears to move around its orbit in about 116 earth days. The temparature variations of Mercury in some equatorial regions ranging from 100 K (-173 °C; -280 °F) at night to 700 K (427 °C; 800 °F) during the day. The temparature variations in the poles are constantly below 180 K (-93 °C; -136 °F).The tilt of Mercury's axis is about 1/30 of a degree, which is the smallest tilt of any of the Solar System's planets.The orbital eccentricity of mercury is the largest among planets.The surface of Mercury is heavily cratered and similar in appearance to the Moon.
Mercury rotates exactly three times for every two revolutions.The visibility of Mercury is only one day in every two years. The equatorial radius of Mercury is about 2,439.7 km. Mercury consists of approximately 70% metallic and 30% silicate material. The iron content in the core of Mercury is higher as compared to any other majour planet in the solar system. The Magnetic field of mercury is dipolar.The magnetic field strength at the Mercurian equator is about 300 nT. The distance from Mercury surface to sun is about 58 million km.
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