# Deimos, Moon of Mars

**Deimos** is a Moon that orbits round the planet Mars. Its orbit circumference, the total distance it travels round its planetary parent is 147,390.96 km. The furthest it gets from its orbital parent (apoasis) is 23,463 km. Its mass is estimated/calculated at being 1,476,188,406,600,740 kg. Its density has been calculated at being 1.471 g/cm3. Its volume is 998 km3.

It was discovered in the year 1877 by A. Hall.

The orbital period, i.e. the period it takes to complete an orbit round Mars is 1.2624 days. The figure is also known as the sidereel period. The figure comes from N.A.S.A.. Its takes 1.2624 Earth days to do a full rotation period.

The Semi-Major Axis of the orbit is 23,458 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Deimos is 39.0 km. The mean radius, that is the average radius of Deimos is 6.2 km. The surface area of Deimos is 483.05 km2. The surface gravity of the said item is 0.003 m/s2. The average orbit velocity, that is the speed at which it orbits is 4,864.8 km/h.

The orbital inclination, the angle at which Deimos orbits in relation to the orbital plane is 1.788 degrees. The orbital eccentricity is 0.0002, it is the degree at which Deimos orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

## Image of the Mars moon of Deimos

## Deimos Facts

Type | Moon |

Orbital Circumference | 147,390.96 km |

Furthest from parent (Apoasis) | 23,463 km |

Mass | 1,476,188,406,600,740 kg |

Density | 1.471 g/cm3 |

Volume | 998 km3 |

Year of Discovery | 1877 |

Discoverer | A. Hall |

Orbital Period | 1.2624 |

Rotation Period | 1.2624 Earth days |

Semi-Major Axis | 23,458 km |

Equatorial Circumference | 39.0 km |

Mean Radius | 6.2 km |

Surface Area | 483.05 km2 |

Surface Gravity | 0.003 m/s2 |

Average Orbit Velocity | 4,864.8 km/h |

Orbital Inclination | 1.788 |

Orbital Eccentricity | 0.0002 |

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