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Praxidike, Moon of Jupiter

Praxidike is a Moon that orbits round the planet Jupiter. Its orbit circumference, the total distance it travels round its planetary parent is 131,098,561.00 km. The furthest it gets from its orbital parent (apoasis) is 26,016,270 km. Its mass is estimated/calculated at being 434,613,845,598,186 kg. Its density has been calculated at being 2.6 g/cm3. Its volume is 165 km3.

Praxidike was discovered on 23 November 2000 by Scott S. Sheppard, David C. Jewitt, Yanga R. Fernandez, and Eugene Magnier.

The orbital period, i.e. the period it takes to complete an orbit round Jupiter is 625.39 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 21,148,000 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Praxidike is 21.4 km. The mean radius, that is the average radius of Praxidike is 3.4 (assuming an albedo of 0.04) km. The surface area of Praxidike is 145.27 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 8,734.5 km/h.

The orbital inclination, the angle at which Praxidike orbits in relation to the orbital plane is 148.985 degrees. The orbital eccentricity is 0.2302, it is the degree at which Praxidike 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

Praxidike Facts

Orbital Circumference131,098,561.00 km
Furthest from parent (Apoasis)26,016,270 km
Mass434,613,845,598,186 kg
Density2.6 g/cm3
Volume165 km3
Orbital DirectionRetrograde, opposite to the parents direction
Date of Discovery23 November 2000
DiscovererScott S. Sheppard, David C. Jewitt, Yanga R. Fernandez, and Eugene Magnier
Orbital Period625.39
Semi-Major Axis21,148,000 km
Equatorial Circumference21.4 km
Mean Radius3.4 (assuming an albedo of 0.04) km
Surface Area145.27 km2
Surface Gravity0.003 m/s2
Average Orbit Velocity8,734.5 km/h
Orbital Inclination148.985
Orbital Eccentricity0.2302

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