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Encyclopedia > Characteristics > Jupiter II

CHARACTERISTICS OF JUPITER



Characteristics Values
Semi-major axis in
astronomical units (au)		 5.202603 
Semi-major axis in km 778 298 362
Eccentricity of the orbit 0.04850
Inclination of the orbit to the ecliptic 1°.3033
Inclination of the equator on the ecliptic 3°.13
Sidereal period of revolution  11 years and 314.84 days 
Rotation period 9.92 hours
Orbital velocity 13 km/s
Apparent equatorial diameter at the
smallest distance from the Earth (maximum value)		 50".1 
Equatorial diameter (Earth=1)  11.2089 
Equatorial diameter  142 984 km
Visual magnitude at opposition -2.7
Flattening  1/15.4 
Volume (Earth=1)  1 317 
Mass (Sun=1)  1/1047.5654 
Mass (Earth=1)  317.83 
Mass Jupiter+satellites (Sun=1) 1/1047.3486
Mass Jupiter+satellites (Jupiter=1) 1.0002
Density (Earth=1)  0.24 
Density (water=1) 1.33
Surface gravity (Earth=1) 2.53
Escape velocity 59 560 m/s
Reflectivity (geometric albedo ) 0.52
The hightest peak 31 000 m
Deepest pit 102 000 m
Cloud temperature -121°C
Atmospheric pressure
at cloud level
(Earth=1)		 0.7
Atmosphere 90% hydrogen
10% helium
traces of methane, ...
Credit NASA
The Great Red Spot and clouds in the upper atmosphere colored by some complex molecules.


Click here for an animation showing the rotation of Jupiter. Credit : NASA.

Origin of name : click here.