Ice Giant
Neptune
Neptune is currently about 4,337,644,003 kilometres from Earth, or 29.00 astronomical units, which puts a one-way radio signal 4.0 hours out. It is 29.88 astronomical units from the Sun.
The deep blue, windswept outermost giant, with the fastest winds in the solar system and a faint set of rings hidden in its darkness.
Visited only once, by Voyager 2 in 1989.
Right now
- Distance from Earth
- 4,337,644,003 km (29.00 AU)
- Distance from the Sun
- 4,469,690,684 km (29.88 AU)
- One-way signal time
- 4.0 hours
The body
- Mean radius
- 24,622 km
- Day
- 16.1 hours
- Year
- 164.8 years
- Moons
- 16 known