Neptune

Description:
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.

Radius: 24,622 km

Distance from Sun: 4.495 billion km

Orbital period: 165 years

Mass: 1.024 × 10^26 kg (17.15 M⊕)

Did you know: A planet must orbit the sun, which Neptune does – once every 165 years.