# Metis, Moon of Jupiter

**Metis** is a Moon that orbits round the planet Jupiter. Its orbit circumference, the total distance it travels round its planetary parent is 804,247.43 km. The furthest it gets from its orbital parent (apoasis) is 128,154 km. Its mass is estimated/calculated at being 119,893,474,647,775,000 kg. Its density has been calculated at being 3 g/cm3. Its volume is 41,630 km3.

It was discovered in the year 1980 by Stephen Synnott.

The orbital period, i.e. the period it takes to complete an orbit round Jupiter is 0.295 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 128,000 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Metis is 135.1 km. The mean radius, that is the average radius of Metis is 21.5 km. The surface area of Metis is 5,808.80 km2. The surface gravity of the said item is 0.017 m/s2. The average orbit velocity, that is the speed at which it orbits is 113,594.3 km/h.

The orbital inclination, the angle at which Metis orbits in relation to the orbital plane is 0.019 degrees. The orbital eccentricity is 0.0012, it is the degree at which Metis orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

## Inner Jupiter Moon Moon Group

Galilean Moons are the four largest moons that orbit Jupiter. All four were discovered by Galileo Galilei when he looked up at Jupiter. Galileo is the Italian Astronomer who is credited with inventing the telescope.

### List of Members in Inner Jupiter Moon Group

## Metis Facts

Type | Moon |

Orbital Circumference | 804,247.43 km |

Furthest from parent (Apoasis) | 128,154 km |

Mass | 119,893,474,647,775,000 kg |

Density | 3 g/cm3 |

Volume | 41,630 km3 |

Year of Discovery | 1980 |

Discoverer | Stephen Synnott |

Orbital Period | 0.295 |

Semi-Major Axis | 128,000 km |

Equatorial Circumference | 135.1 km |

Mean Radius | 21.5 km |

Surface Area | 5,808.80 km2 |

Surface Gravity | 0.017 m/s2 |

Average Orbit Velocity | 113,594.3 km/h |

Orbital Inclination | 0.019 |

Orbital Eccentricity | 0.0012 |

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