**Helene** is a Moon that orbits round the planet Saturn. 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 22,836 km3.

Helene was discovered on 1 March 1980 by P. Laques, J. Lecacheus.

The orbital period, i.e. the period it takes to complete an orbit round Saturn is 2.737 days. The figure is also known as the sidereel period. The figure comes from N.A.S.A..

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 equatorial circumference of Helene is 110.6 km. The mean radius, that is the average 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.

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 |

Orbital Period | 2.737 |

Semi-Major Axis | 377,420 km |

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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