Neptune

Neptune is the eighth and farthest known planet from the Sun in the Solar System. In the Solar System, it is the fourth-largest planet by diameter, the third-most-massive planet, and the densest giant planet. Wikipedia

Distance from Sun: 4.495 billion km

Radius: 24,622 km

Orbital period: 165 years

Mass: 1.024 × 10^26 kg (17.15 M⊕)

Surface area: 7.618 billion km²

Moons: Triton, S/2004 N 1, Laomedeia, Proteus, Nereid, Thalassa, Galatea, Halimede, Despina, Sao, Psamathe, Neso, Larissa, Naiad