Neptune Facts and Figures - Facts and Figures

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Neptune Facts and Figures

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Encarta

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

Neptune

Source

Data are from the U.S. Naval Observatory's annual Astronomical Almanac and various other publications.