# Helene, Moon of Saturn

**Helene** is a Moon that orbits round Saturn rather than the Sun which our Earth orbits round. Its orbit circumference, the total distance it travels round its planetary parent is 2,371,369.91 km. The furthest it gets from its orbital parent (apoasis) is 380,100 km. Its mass is estimated/calculated at being 11,389,880,091,538,700 kg. Its density has been calculated at being 0.5 g/cm3. Its volume is 0.5 g/cm3. It was discovered on 1 March 1980 by P. Laques, J. Lecacheus.

The Semi-Major Axis of the orbit is 377,420 km, which is the furthest point from the centre to the edge of an elliptical point.

The mass of the object is calculated at being 11,389,880,091,538,700 kg. The equatorial circumference of Helene is 110.6 km. The mean radius of Helene is 17.6 km. The surface area of Helene is 3,892.56 km2. The surface gravity of the said item is 0.002 m/s2. The average orbit velocity, that is the speed at which it orbits is 36,100.5 km/h.

The orbital inclination, the angle at which Helene orbits in relation to the orbital plane is 0.213 degrees. The orbital eccentricity is 0.0071, it is the degree at which Helene orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

## Helene Facts

Type | Moon |

Orbital Circumference | 2,371,369.91 km |

Furthest from parent (Apoasis) | 380,100 km |

Mass | 11,389,880,091,538,700 kg |

Density | 0.5 g/cm3 |

Volume | 22,836 km3 |

Date of Discovery | 1 March 1980 |

Discoverer | P. Laques, J. Lecacheus |

Semi-Major Axis | 377,420 km |

Mass | 11,389,880,091,538,700 kg |

Equatorial Circumference | 110.6 km |

Mean Radius | 17.6 km |

Surface Area | 3,892.56 km2 |

Surface Gravity | 0.002 m/s2 |

Average Orbit Velocity | 36,100.5 km/h |

Orbital Inclination | 0.213 |

Orbital Eccentricity | 0.0071 |

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