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Mneme, Moon of Jupiter

Mneme is a Moon that orbits round the planet Jupiter. Its orbit circumference, the total distance it travels round its planetary parent is 130,452,054.59 km. The furthest it gets from its orbital parent (apoasis) is 25,813,276 km. Its mass is estimated/calculated at being 14,986,684,330,972 kg. Its density has been calculated at being 2.6 g/cm3. Its volume is 4 km3.

Mneme was discovered on 9 February 2003 by Scott S. Sheppard and Brett J. Gladman.

The orbital period, i.e. the period it takes to complete an orbit round Jupiter is 620.05 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 21,036,000 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Mneme is 6.3 km. The mean radius, that is the average radius of Mneme is 1.0 (assuming an albedo of 0.04) km. The surface area of Mneme is 12.57 km2. The surface gravity of the said item is 0.001 m/s2. The average orbit velocity, that is the speed at which it orbits is 8,766.1 km/h.

The orbital inclination, the angle at which Mneme orbits in relation to the orbital plane is 148.63 degrees. The orbital eccentricity is 0.2271, it is the degree at which Mneme orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Ananke Moon Group

Ananke group of Jovian moons are all believed to have the same source, probably the result of a asteroid collision. The remnants were caught by the immense gravitational pull of Jupiter and remain in orbit ever since. The name derives it name from the largest in the group. All the members of the group orbit in a retrograde orbit hence why they all finish with the letter 'e' in their name.

List of Members in Ananke Group

Mneme Facts

Orbital Circumference130,452,054.59 km
Furthest from parent (Apoasis)25,813,276 km
Mass14,986,684,330,972 kg
Density2.6 g/cm3
Volume4 km3
Orbital DirectionRetrograde, opposite to the parents direction
Date of Discovery9 February 2003
DiscovererScott S. Sheppard and Brett J. Gladman
Orbital Period620.05
Semi-Major Axis21,036,000 km
Equatorial Circumference6.3 km
Mean Radius1.0 (assuming an albedo of 0.04) km
Surface Area12.57 km2
Surface Gravity0.001 m/s2
Average Orbit Velocity8,766.1 km/h
Orbital Inclination148.63
Orbital Eccentricity0.2271

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