Amalthea

E646436

Amalthea is a small, irregularly shaped inner moon of Jupiter known for its reddish color and porous, low-density composition.

All labels observed (3)

Label Occurrences
Amalthea canonical 5
Amalthea gossamer ring 1
Amalthea group of moons 1

How this entity was disambiguated

Statements (44)

Predicate Object
instanceOf moon of Jupiter
natural satellite
albedo low
belongsToGroup Amalthea group of moons
linked to: Amalthea
belongsToPlanetarySystem Jovian system
catalogDesignation Jupiter V
linked to: Jupiter XV
celestialBodyType inner moon
color reddish
contributesTo Jupiter's gossamer rings
linked to: Jovian ring system
density_g_per_cm3 ~0.86
dimensions_km 250 × 146 × 128
discoveredBy Edward Emerson Barnard
discoveryDate 1892-09-09
discoveryMethod telescopic observation
escapeVelocity_km_per_s ~0.058
exploredBy Galileo spacecraft
Voyager 1
Voyager 2
hasNo substantial atmosphere
inclination_degrees ~0.37 to Jupiter's equator
largestCrater Gaea crater
Pan crater
location within Jupiter's faint ring system
meanRadius_km ~83
meanSurfaceGravity_m_per_s2 ~0.02
namedAfter Amalthea (nymph in Greek mythology)
observedInDetailBy Galileo orbiter
linked to: Galileo spacecraft
orbitalEccentricity ~0.003
orbitalPeriod_days ~0.498
orbits Jupiter
parentPlanet Jupiter
porosity high
relativePosition one of the inner Galilean-region moons
rotation synchronous with its orbital period
semiMajorAxis_km ~181000
shape irregular
spectralType reddened, non-icy spectrum
surfaceComposition porous, icy and rocky material
surfaceFeature grooves
large impact craters
ridges
surfaceMaterial sulfur-rich material from Io
surfaceTemperature_K ~120
tidalLock Jupiter

How these facts were elicited

Referenced by (7)

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

Jovian ring system hasPart Amalthea gossamer ring
linked to: Amalthea
Adrastea isSmallerThan Amalthea
Thebe neighboringInnerMoon Amalthea
Amalthea belongsToGroup Amalthea group of moons
linked to: Amalthea