Triton

E128066

Triton is Neptune’s largest moon, notable for its retrograde orbit and geologically active, icy surface.

All labels observed (1)

Label Occurrences
Triton canonical 5

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf icy moon
moon of Neptune
natural satellite
belongsToPlanetarySystem Neptune system
discoveryDate 1846-10-10
flybyDate 1989-08-25
hasAlbedo high albedo
hasAtmosphereComponent methane
nitrogen
hasAtmosphericPressure about 14 microbar
hasBondAlbedo about 0.79
hasCryovolcanism true
hasDiameter about 2706 km
hasEscapeVelocity about 1.455 km/s
hasExplorationMission Voyager 2
hasGeysers nitrogen geysers
hasInternalHeatingSource tidal heating
hasMass about 2.14×10^22 kg
hasMeanDensity about 2.06 g/cm³
hasMeanRadius about 1353 km
hasOrbitalDirection retrograde
hasOrbitalEccentricity about 0.000016
hasOrbitalInclination about 156.8 degrees to Neptune’s equator
hasOrbitalPeriod about 5.877 days
hasOrbitalResonanceHistory likely disrupted original Neptunian satellite system
hasSemiMajorAxis about 354,759 km from Neptune
hasShape nearly spherical
hasSurfaceComposition carbon dioxide ice
methane ice
nitrogen ice
water ice
hasSurfaceFeature cantaloupe terrain
few impact craters
polar cap
hasSurfaceGravity about 0.779 m/s²
hasSurfaceTemperature about 38 K
hasVisualGeometricAlbedo about 0.76
isGeologicallyActive true
isLargestMoonOf Neptune
isLikelyCapturedObject true
isOnlyLargeMoonWith retrograde orbit
isSecondLargestMoonOf outer Solar System after Titan
isThoughtToBeCapturedFrom Kuiper Belt
surface form: Kuiper belt
isTidallyLockedTo Neptune
orbits Neptune
wasDiscoveredBy William Lassell
wasDiscoveredSoonAfter discovery of Neptune
wasVisitedBy Voyager 2

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Neptune largestMoon Triton
Neptune moon Triton
imaging science system capturedImagesOf Triton
subject surface form: Imaging Science System
Proteus largerOnlyThan Triton
subject surface form: Proteus (moon)
William Lassell discovered Triton