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Mercury

 

Source: U. S. Geological Survey


Peter Paul Rubens,
Merkur und Argus (Ausschnitt)
1635-1638

   Mercury data:
Ratio
(Earth=1)
diameter
4,879.4 km
Earth: 0.38
Moon: 1.40
mass
0.3302·1024 kg = 0.055 mE
Earth: 0.055
Moon: 4.50
density
5427 kg/m3 = 0.98
Earth: 0.98
mean Sun distance
57,910 ·106 km = 0.39 AU
Min. 45.9·106 km = 0.31 AU
Max. 69.7·106 km= 0.47 AU

Solar irradiance
9126 W/m2
6.7
Distance from Earth
minimum: 77.3·106 km
= 0.52 AE
maximum: 221.9·106 km
= 1.48 AU

eccentricity of orbit
0.2056

sidereal orbit period
87.97 Earth days

synodic period
115.88 Earth days

sidereal rotation period
1407.6 hours = 58.65 Earth days

inclination of orbit
7.00°

surface temperature
average: 440 K
day: +350 °C
night: -170 °C

pressure of atmosphere at the surface
10-15 bar

 
Meine Applets:

Planetenbewegung

Phasen von Merkur und Venus

Mercury Transit Observer


Dates of recent and future transits

 

 

Web Links

 

the constants and equation pages: Astronomy - Planets - Mercury

Mercury Fact Sheet (National Space Science Data Center)

NSSDC Photo Gallery Mercury

Die Neun Planeten: Merkur

The Nine Planets: Mercury

Windows to the Universe: Mercury

Der Planet Merkur (Space Science Data Center)

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