Planet
The windiest planet in the solar system, with storms reaching supersonic speeds.
| Type | Planet |
|---|---|
| Distance from the Sun | 30.05 AU |
| Diameter | 49,244 km |
| Mass | 1.02 × 10²⁶ kg |
| Surface gravity | 11.2 m/s² |
| Temperature | -201°C |
| Moons | 16 |
| Rings | Yes |
| Orbital period | 59,800 days |
| Rotation period | 16.11 hours |
| Apparent magnitude | 7.78 |
| Redshift | 0 |
| Discovered | 1846 |
Planets are massive enough to pull themselves round and to have cleared their orbit of other debris — the second part is the line the solar system's dwarf planets fall short of.
At 49,244 km across, Neptune is 3.9 times the diameter of Earth.
Its mass is 17 times the mass of Earth.
It keeps an average distance of 30.05 AU from the Sun, so sunlight takes 4.2 hours to reach it.
A single orbit takes 164 years.
An average temperature of 72 K works out at -201 degrees Celsius, colder than the 15 degrees Earth averages.
16 moons are known to orbit it.
It has been on record since 1846.
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