Neptune
E21590
Neptune is the eighth and farthest known major planet from the Sun, a cold, blue ice giant characterized by strong winds and a dynamic atmosphere.
Aliases (2)
Statements (61)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
→
gas giant planet → ice giant → outer planet → planet → |
| albedo | about 0.29 → |
| atmosphericComposition |
helium
→
hydrogen → methane → |
| atmosphericFeature |
dynamic atmosphere
→
large storms → strong winds → |
| axialTilt | about 28.3 degrees → |
| belongsTo | Solar System → |
| colorDescription | blue → |
| discoveredBy |
Johann Galle
→
Urbain Le Verrier → |
| discoveryDate | 1846-09-23 → |
| discoveryMethod | mathematical prediction → |
| distanceFromSun_km | about 4.5 billion kilometers → |
| distanceFromSun_mean | about 30.1 astronomical units → |
| equatorialDiameter | about 49,244 kilometers → |
| equatorialGravity | about 11.15 m/s² → |
| escapeVelocity | about 23.5 km/s → |
| exploredBy |
Voyager 2
→
surface form: "Voyager 2 spacecraft"
|
| flybyDate_Voyager2 | 1989-08-25 → |
| hasMagneticField | true → |
| hasRingSystem | true → |
| internalStructure |
mantle of water ammonia and methane ices
→
outer envelope of hydrogen and helium → rocky core → |
| largestMoon | Triton → |
| magneticFieldCharacteristic |
offset from planetary center
→
tilted relative to rotation axis → |
| mass | about 1.024e26 kilograms → |
| massRelativeToEarth | about 17.1 Earth masses → |
| meanDensity | about 1.64 g/cm³ → |
| meanRadius | about 24,622 kilometers → |
| moon |
Despina
→
Galatea → Larissa → Naiad → Arethusa →
surface form: "Nereid"
Proteus → Thalassa → Triton → |
| namedAfter | Roman god of the sea → |
| notableStorm | Great Dark Spot → |
| numberOfKnownMoons | 14 → |
| orbitalEccentricity | about 0.009 → |
| orbitalPeriod | about 164.8 Earth years → |
| positionInSolarSystem | eighth planet from the Sun → |
| ringName |
Adams ring
→
Arago ring → Galle ring → Arago ring →
surface form: "Lassell ring"
Adams ring →
surface form: "Le Verrier ring"
|
| rotationPeriod | about 16 hours → |
| symbol | ♆ → |
| temperature_upperAtmosphere | about −220 degrees Celsius → |
| windSpeed_max | about 2,100 km/h → |
Referenced by (24)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form: "Imaging Science System"
this entity surface form: "Nettuno"
subject surface form: "Kuiper Belt object"
this entity surface form: "Neptune (gravitationally)"
this entity surface form: "Nettuno"
subject surface form: "Kuiper Belt object"