Prometheus

Moon· orbits Saturn

Prometheus — moon of Saturn.

Open in 3D viewSee Prometheus in the live, interactive 3D map

Key facts

Mass

1.60 × 10¹⁷ kg

0.00000219 Moon masses

Radius

43.1 km

2% of our Moon's radius

Surface gravity

0.00577 m/s²

0% of Earth's

Orbit around Saturn

14.8 hours

0.62 Earth days

Science

Physical

Mass: 1.60 × 10¹⁷ kg · 0.00000219 Moon masses
Radius: 43.1 km · 2% of our Moon's radius
Density: 478 kg/m³ · 0.48× water
Surface gravity: 0.00577 m/s² · 0% of Earth's
Escape velocity: 22.3 m/s · 0% of Earth's

Orbit around Saturn

Distance from Saturn: 4,214,701 km
Orbital period: 14.85 hours
Eccentricity: 0.006058
Inclination: 6.46 °

Radiation & temperature

Insolation: 0.0112 S⊕ · 1% of the sunlight Earth receives

Discovery & history

By: Voyager Science Team

Prometheus was discovered in 1980 by Voyager Science Team. Saturn's moons are named after giants and deities of world mythology — its distant irregular moons after Norse, Inuit and Gallic figures. Beyond its discovery and naming, little more about it has been individually recorded.

Images

Prometheus, an F-ring shepherd moon, imaged by Cassini — NASA / JPL / Space Science Institute (public domain) · Wikimedia Commons

Prometheus Trail — NASA/JPL/Space Science Institute · NASA Image Library

F Ring Patterns — NASA/JPL-Caltech/SSI/QMUL · NASA Image Library

Rings In Between — NASA/JPL-Caltech/Space Science Institute · NASA Image Library

Cutting Off Rhea — NASA/JPL/Space Science Institute · NASA Image Library

Shifting Strands — NASA/JPL/Space Science Institute · NASA Image Library

Trio of Small Moons — NASA/JPL/Space Science Institute · NASA Image Library

Between the Lines — NASA/JPL/Space Science Institute · NASA Image Library

Images from open archives · credit shown per image