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Lysithea, Moon of Jupiter

Lysithea is a Moon that orbits round the planet Jupiter. Its orbit circumference, the total distance it travels round its planetary parent is 73,387,003.90 km. The furthest it gets from its orbital parent (apoasis) is 13,033,991 km. Its mass is estimated/calculated at being 62,944,074,190,082,100 kg. Its density has been calculated at being 2.6 g/cm3. Its volume is 24,429 km3.

Lysithea was discovered on 6 July 1938 by Seth Barnes Nicholson.

The orbital period, i.e. the period it takes to complete an orbit round Jupiter is 259.2 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 11,717,000 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Lysithea is 113.1 km. The mean radius, that is the average radius of Lysithea is 18.0 (assuming an albedo of 0.04) km. The surface area of Lysithea is 4,071.50 km2. The surface gravity of the said item is 0.013 m/s2. The average orbit velocity, that is the speed at which it orbits is 11,797.0 km/h.

The orbital inclination, the angle at which Lysithea orbits in relation to the orbital plane is 28.302 degrees. The orbital eccentricity is 0.1124, it is the degree at which Lysithea orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Legend of Lysithea

Lysithea was one of many lovers of Zeus. As he had got Lysithea pregnant, he promised to do whatever Lysithea asked of him. Hera, Zeus' wife tricked Lysithea into getting Zeus to come to Lysithea in the same way Zeus wooed Hera. When Zeus came, he accidentally set the room alight and caused Lysithea to die of fright. Zeus managed to save the baby foetus and he sew it into his thigh. When the baby reached birthing time, he undone the stitches and out popped Dionysus.

Himalia Moon Group

The moon is a member of the Himalia group of Jovian Moons. All four Himalia moons in the group orbit in a prograde direction, this means they orbit in the same direction as Jupiter. They are all believed to be from the same source, possibly the remnants of an asteroid that got broken up in a collision. Himalia is the largest member of the group therefore it is the one that the group is named after. It takes just over two thirds the time the moon takes to orbit the Earth as Himalia takes to orbit Jupiter. NASA

List of Members in Himalia Group

Lysithea Facts

Orbital Circumference73,387,003.90 km
Furthest from parent (Apoasis)13,033,991 km
Mass62,944,074,190,082,100 kg
Density2.6 g/cm3
Volume24,429 km3
Orbital DirectionPrograde, same as the parents direction
Date of Discovery6 July 1938
DiscovererSeth Barnes Nicholson
Orbital Period259.2
Semi-Major Axis11,717,000 km
Equatorial Circumference113.1 km
Mean Radius18.0 (assuming an albedo of 0.04) km
Surface Area4,071.50 km2
Surface Gravity0.013 m/s2
Average Orbit Velocity11,797.0 km/h
Orbital Inclination28.302
Orbital Eccentricity0.1124

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