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Mercury

Mercury

MeaningMessenger of the Gods
Position1
Discoverer-
Discovered-
Length of Day ( hrs )4222.6
Distance from Sun ( 10^6Km )57.9
Volume (10^10 km3) 6.083
Equatorial Radius 2439.7
Volumetric Mean Radius2439.7
Ellipticity0
Mean Density5427
Surface Gravity3.7
Surface Acceleration3.7
Escape Velocity4.3
Orbit Period87.969
Orbit Eccentricity0.2056
Average Temperature440K/160C
Surface Pressure-10-15
Average Temperature440K/160C
Atmosphere42% Oxygen (O2), 29% Sodium (Na), 22% Hydrogen (H2), 6% Helium (He), 0.5% Potassium (K), possible trace amounts of Argon (Ar), Carbon Dioxide (CO2), Water (H2O), Nitrogen (N2), Xenon (Xe), Krypton (Kr), Neon (Ne)
Moon Count0
Moons
Picture Copyright
MembersGallery
N.A.S.A.