Io
E170675
Io is a large, volcanically active moon of Jupiter and one of the four major Galilean satellites discovered by Galileo Galilei.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Io canonical | 14 |
| Jupiter and Io | 1 |
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
Galilean moon
ⓘ
astronomical object ⓘ moon of Jupiter ⓘ natural satellite ⓘ |
| albedo | about 0.63 geometric albedo ⓘ |
| atmosphereComposition | sulfur dioxide ⓘ |
| atmosphereType | tenuous atmosphere ⓘ |
| belongsTo | Solar System ⓘ |
| belongsToSystem |
Jovian satellite system
ⓘ
surface form:
Jovian system
|
| creates | Io plasma torus ⓘ |
| diameter | about 3643.2 km ⓘ |
| discoverer | Galileo Galilei ⓘ |
| discoveryDate | 1610 ⓘ |
| escapeVelocity | about 2.56 km/s ⓘ |
| hasBeenObservedBy |
Galileo spacecraft
ⓘ
New Horizons ⓘ
surface form:
New Horizons spacecraft
|
| hasBeenVisitedBy |
Pioneer 10
ⓘ
Pioneer 11 ⓘ Voyager 1 ⓘ Voyager 2 ⓘ |
| hasGeologicalActivity | intense volcanism ⓘ |
| hasMagnetosphericInteractionWith | Jupiter’s magnetosphere ⓘ |
| hasVolcano |
Loki Patera
ⓘ
Pele ⓘ Tvashtar Paterae ⓘ |
| isGalileanSatelliteWith |
Callisto
ⓘ
Europa ⓘ Ganymede ⓘ |
| isMost | most volcanically active body in the Solar System ⓘ |
| mass | about 8.93×10^22 kg ⓘ |
| meanDensity | about 3.53 g/cm³ ⓘ |
| meanRadius | about 1821.6 km ⓘ |
| meanSurfaceTemperature | about 110 K ⓘ |
| namedAfter |
Io
ⓘ
surface form:
Io (mythology)
|
| orbitalEccentricity | about 0.0041 ⓘ |
| orbitalInclination | about 0.04 degrees to Jupiter’s equator ⓘ |
| orbitalPeriod | about 1.769 days ⓘ |
| orbits | Jupiter ⓘ |
| rotationalState | tidally locked to Jupiter ⓘ |
| rotationPeriod | about 1.769 days ⓘ |
| semiMajorAxis | about 421700 km ⓘ |
| surfaceComposition |
silicate rock
ⓘ
sulfur ⓘ sulfur dioxide frost ⓘ |
| surfaceFeature |
calderas
ⓘ
extensive lava flows ⓘ mountainous terrain ⓘ sulfur plains ⓘ |
| surfaceGravity | about 1.796 m/s² ⓘ |
| tidalHeatingCausedBy |
gravitational interaction with Jupiter
ⓘ
orbital resonances with Europa and Ganymede ⓘ |
| volcanismDrivenBy | tidal heating ⓘ |
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Imaging Science System
this entity surface form:
Jupiter and Io
subject surface form:
Ultraviolet Spectrometer (Galileo)