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Helene
Helene Moon

Helene: Trojan Moon of Saturn

Helene is one of the four Trojan moons of planet Saturn. Helene is co-orbital with the moon Dione and resides in Dione's leading Lagrangian point (L4).

For a listing of all moons, see Moons of the Planets.

Helene Facts
      1. Mass (kg)
      1. Radii (km)
      2. 18x16x15
      1. Density (gm/cm3)
      1. Distance from planet (km)
      2. 377,400
      1. Rotational period (days)
      1. Orbital period (days)
      2. 2.7369
      1. Orbital velocity (km/sec)
      2. 10.03
      1. Eccentricity of orbit
      2. 0.005
      1. Inclination of orbit (°)
      2. 0.2
      1. Albedo
      2. 0.7
      1. Magnitude (Vo)
      2. 18.5
      1. Atmosphere