Neptune

Named After: Roman god of the Sea
Discovered In: 1846
Diameter: 49,528 km
Mass: 17.151 Earth
Gravity: 1.2 Earth
Distance from Sun: 4.5 Billion km (30.1 AU)
Year Length: 163.72 Earth years
Orbital Speed: 5.4 km/sec
Day Length: 16 hours
Moons: Despina
Galataea
Larissa
Naiad
Nereid
Proteus
Thalassa
Triton

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