Helene

Moon· orbits Saturn

Helene is a moon orbiting Saturn.

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

Key facts

Mass

7.19 × 10¹⁵ kg

0.000000098 Moon masses

Radius

18 km

1% of our Moon's radius

Surface gravity

0.00148 m/s²

0% of Earth's

Orbit around Saturn

2.74 Earth days

Science

Physical

Mass: 7.19 × 10¹⁵ kg · 0.000000098 Moon masses
Radius: 18 km · 1% of our Moon's radius
Density: 294 kg/m³ · 0.29× water
Surface gravity: 0.00148 m/s² · 0% of Earth's
Escape velocity: 7.3 m/s · 0% of Earth's

Orbit around Saturn

Distance from Saturn: 4,029,749 km
Orbital period: 2.7 days
Eccentricity: 0.007509
Inclination: 6.54 °

Radiation & temperature

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

Discovery & history

By: P. Laques and J. Lecacheux

Helene was discovered in 1980 by P. Laques and J. Lecacheux. 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

Helene, a Dione trojan moon, imaged by Cassini — NASA / JPL / Space Science Institute (public domain) · Wikimedia Commons

Flying by Helene — NASA/JPL/Space Science Institute · NASA Image Library

Closest View of Helene — NASA/JPL/Space Science Institute · NASA Image Library

High-Res Helene — NASA/JPL-Caltech/Space Science Institute · NASA Image Library

Dramatic Helene — NASA/JPL-Caltech/Space Science Institute · NASA Image Library

Catching Helene — NASA/JPL/Space Science Institute · NASA Image Library

Helene — NASA/JPL/Space Science Institute · NASA Image Library

Splinters of Rings — NASA/JPL/Space Science Institute · NASA Image Library

Images from open archives · credit shown per image