Astronomy — The Planet Neptune
Neptune
- Distance from the Sun: 2,801,000,000 miles
- Time for one solar circuit, in Earth years: 165 years
- Miles traveled in one solar circuit: 17,590,000,000
- Time for one axial rotation, in Earth hours: 16 hours
- Orbital speed: 12,000 mph
- Diameter: 28,000 miles
- Neptune has three rings
- Surface temperature: -300 degrees Fahrenheit
- Moons: eight presently known
- Triton – twice the size of Earth’s Moon
- Nereid – has the most elliptical orbit of any known moon in the solar system
- Others are Naiad, Galatea, Thalassa, Larissa, Proteus, Despina
Click here to return to the Astronomy index page