Moon
Amalthea
TypeMoon
Mass~2 × 10¹⁸ kg
Diameter167 km
Orbital Radius181,400 km
Orbital Period0.498 days
Rotation Period12 hours
Known Moons0
Surface Gravity0.02 m/s²
Average Temp-160 °C
AtmosphereNone
Discovered ByEdward Barnard
Discovery Year1892
About Amalthea
One of the reddest moons of Jupiter, tinted by sulfur blasted from Io. The last planetary moon ever discovered by eye alone, in 1892. Feeds the Gossamer Ring with impact debris.
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