Moon
Prometheus
TypeMoon
Mass1.595 × 10¹⁷ kg
Diameter86 km
Orbital Radius139,380 km
Orbital Period0.613 days
Rotation Period14.7 hours
Known Moons0
Surface Gravity0.02 m/s²
Average Temp-180 °C
AtmosphereNone
Discovered ByVoyager 1 team
Discovery Year1980
About Prometheus
The inner shepherd of the F ring, repeatedly carving dark channels and streamers from the ring material as it dips past. Its elongated body stretches about 136 km tip to tip.
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