Mercury

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Mercury
Mercury is the smallest planet in the Solar System and the one closest to the Sun, with an orbital period of about 88 Earth days, which is much faster than any other planet in the Solar System. Seen from Earth, it appears to move around its orbit in about 116 days. It has no known natural satellites. It is named after the Roman deity Mercury, the messenger to the gods. Mercury's axis has the smallest tilt of any of the Solar System's planets (about 1⁄30 of a degree), and its orbital eccentricity is the largest of all known planets in the Solar System. At aphelion, Mercury is about 1.5 times as far from the Sun as it is at perihelion. Mercury's surface is heavily cratered and similar in appearance to the Moon, indicating that it has been geologically inactive for billions of years.Mercury (planet) - Wikipedia, the free encyclopedia
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Short Description Mercury is the smallest planet in the Solar System and the one closest to the Sun, with an orbital period of about 88 Earth days, which is much faster than any other planet in the Solar System. Seen from Earth, it appears to move around its orbit in about 116 days. It has no known natural satellites. It is named after the Roman deity Mercury, the messenger to the gods. Mercury's axis has the smallest tilt of any of the Solar System's planets (about 1⁄30 of a degree), and its orbital eccentricity is the largest of all known planets in the Solar System. At aphelion, Mercury is about 1.5 times as far from the Sun as it is at perihelion. Mercury's surface is heavily cratered and similar in appearance to the Moon, indicating that it has been geologically inactive for billions of years.Mercury (planet) - Wikipedia, the free encyclopedia
Type Planet
AddInfo Terrestrial
Satellite of Sun
Orbit Prograde
Rotation Direct
Magnetosphere Intrinsic
Atmosphere Trace
Shape Equilibrium spheroid
Geological activity In the past
Apoapsis 08 69 816 900 km
Periapsis 08 46 001 200 km
Semi-major axis 08 57 909 050 km
Distance from Sun  0.387 098 au
Eccentricity 0.205 630
Orbital period 87.969 1 days | 0.240 846 year | 0.5 Mercury solar day
Synodic period 115.88 days
Orbital speed 02 47.362 km/s
Mean anomaly 174.796°
Inclination to the ecliptic 007.005°
Inclination to the equator 003.38°
Longitude of the ascending node 048.331°
Argument of periapsis 029.124°
Diameter/Size 04 4 879.4±2.0 km | 0.3829 Earths
Flattening 0
Mass 1023×3.3011 kg | 0.055 Earths
Density 01 5.427 g/cm3
Surface gravity 01 3.7 m/s2 | 0.38 g
Moment of inertia factor 00 0.346±0.014
Escape velocity 04 4250 m/s
Rotation period 58.646 days | 1407.5 hour
Equatorial rotation velocity 01 3.026 m/s
Axial tilt 002.04′ ± 0.08
North pole right ascension 281.01°
North pole declination 061.45°
Albedo Bond 0.068
Albedo geometric 0.142
Temperature min 03 100 K
Temperature mean 03 340 K
Temperature max 03 700 K
Apparent magnitude −2.6 to 5.7
Angular diameter 4.5–13″
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