Details : Item 214
| Mom | Son | Bird | Cat | Daughter | Dad | Dog | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Terrestrial planets |  |  |  |  |  |  |  | ||||
| Gas giants |  |  |  |  |  |  |  | ||||
| Gas giants 2 |  |  |  |  |  |  |  | ||||
| Ice giants |  |  |  |  |  |  |  | ||||
| Dwarf planets |  |  |  |  |  |  |  | ||||
| Others |  |  |  |  |  |  |  | ||||
 | |||||||||||
| Famille : Ice giants/Son |
|---|
|
| Neptune |
| Ice giant Only planet in the Solar System found by mathematical prediction rather than by empirical observation. Recorded wind speeds can be as high as 2100km/s. |
| Properties | |
|---|---|
| Albedo | 0.41 |
| Radius (km) | 24,622 |
| Mass (kg) | 1.024x10+26 |
| Density (g/cm3) | 1.638 |
| Gravity (m/s2) | 11.15 |
| Orbital period (days) | 60,182 |
| Orbital speed (km/s) | 5.43 |
| Temperature (K) | 72 |
| Discovery date | 1845 (U. Le Verrier) |