Amalthea is a Moon that orbits round the planet Jupiter. Its orbit circumference, the total distance it travels round its planetary parent is 1,139,766.90 km. The furthest it gets from its orbital parent (apoasis) is 181,980 km. Its mass is estimated/calculated at being 2,068,162,437,674,130,000 kg. Its density has been calculated at being 0.849 g/cm3. Its volume is 2,434,264 km3.
It was discovered in the year 1892 by Edward Emerson Barnard.
The orbital period, i.e. the period it takes to complete an orbit round Jupiter is 0.498 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 181,400 km, which is the furthest point from the centre to the edge of an elliptical point.
The equatorial circumference of Amalthea is 524.3 km. The mean radius, that is the average radius of Amalthea is 83.45 km. The surface area of Amalthea is 87,510.98 km2. The surface gravity of the said item is 0.020 m/s2. The average orbit velocity, that is the speed at which it orbits is 95,362.0 km/h.
The orbital inclination, the angle at which Amalthea orbits in relation to the orbital plane is 0.38 degrees. The orbital eccentricity is 0.0032, it is the degree at which Amalthea orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.
Amalthea is the reddest object in the Solar System, even redder than the planet Mars. It is one of four moons of Jupiter than orbit inside Io. As it is so close to the planet, it is bombarded with radiation from the planet. It takes less than half a day to complete an orbit.
Amalthea is named after a water nymph, or to put it another way, a Naiad. Amalthea was famous as she nursed a newborn Jupiter. Although a female form, Amalthea is tended to be represented by a goat.
The Jupiter Inner Moon Group are a small group of four moons that orbit close to the planet. The biggest of the group is Amalthea which the group is usually named after. The closest is Metis.
|Orbital Circumference||1,139,766.90 km|
|Furthest from parent (Apoasis)||181,980 km|
|Year of Discovery||1892|
|Discoverer||Edward Emerson Barnard|
|Semi-Major Axis||181,400 km|
|Equatorial Circumference||524.3 km|
|Mean Radius||83.45 km|
|Surface Area||87,510.98 km2|
|Surface Gravity||0.020 m/s2|
|Average Orbit Velocity||95,362.0 km/h|
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