# Aegir, Moon of Saturn

**Aegir** is a Moon that orbits round the planet Saturn. Its orbit circumference, the total distance it travels round its planetary parent is 128,272,946.86 km. The furthest it gets from its orbital parent (apoasis) is 25,987,050 km. Its density has been calculated at being 2.3 g/cm3. Its volume is 113 km3.

Aegir was discovered on 12 December 2004 by Scott S. Sheppard, David L. Jewitt and Jan T. Kleyna. Its orbital period, i.e. the period it takes to complete an orbit round Saturn is 1117.83 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 20,749,800 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Aegir is 18.8 km. The mean radius of Aegir is 3.0 (assuming an albedo of 0.04) km. The surface area of Aegir is 113.10 km2. The average orbit velocity, that is the speed at which it orbits is 4,781.3 km/h.

The orbital inclination, the angle at which Aegir orbits in relation to the orbital plane is 167.106 degrees. The orbital eccentricity is 0.2524, it is the degree at which Aegir orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

## Aegir Facts

Type | Moon |

Orbital Circumference | 128,272,946.86 km |

Furthest from parent (Apoasis) | 25,987,050 km |

Density | 2.3 g/cm3 |

Volume | 113 km3 |

Date of Discovery | 12 December 2004 |

Discoverer | Scott S. Sheppard, David L. Jewitt and Jan T. Kleyna |

Orbital Period | 1117.83 |

Semi-Major Axis | 20,749,800 km |

Equatorial Circumference | 18.8 km |

Mean Radius | 3.0 (assuming an albedo of 0.04) km |

Surface Area | 113.10 km2 |

Average Orbit Velocity | 4,781.3 km/h |

Orbital Inclination | 167.106 |

Orbital Eccentricity | 0.2524 |

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