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Neptune Facts and Figures from Encarta Go to article
Equatorial radius 24,760 km
Equatorial inclination 28.3°
Mass 1.02×1026 kg
Average density 1.6 g/cm3
Rotational period 0.671 days
Orbital period 164.8 years
Average distance from the Sun 4.488 billion kilometers
Perihelion 4.440 billion kilometers
Aphelion 4.536 billion kilometers
Orbital eccentricity 0.00995
Orbital inclination 1.77°
Moons 10
Neptune
Neptune
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Source
Data are from the U.S. Naval Observatory's annual Astronomical Almanac and various other publications.
© 2008 Microsoft