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Autonoe, Moon of Jupiter

Autonoe is a Moon that orbits round the planet Jupiter. Its orbit circumference, the total distance it travels round its planetary parent is 147,145,544.12 km. The furthest it gets from its orbital parent (apoasis) is 31,641,848 km. Its mass is estimated/calculated at being 89,920,105,985,832 kg. Its density has been calculated at being 2.6 g/cm3. Its volume is 34 km3.

Autonoe was discovered on 10 December 2001 by Scott S. Sheppard, David C. Jewitt and Jan T. Kleyna.

The orbital period, i.e. the period it takes to complete an orbit round Jupiter is 761.01 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 24,033,000 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Autonoe is 12.6 km. The mean radius, that is the average radius of Autonoe is 2.0 (assuming an albedo of 0.04) km. The surface area of Autonoe is 50.27 km2. The surface gravity of the said item is 0.002 m/s2. The average orbit velocity, that is the speed at which it orbits is 8,056.6 km/h.

The orbital inclination, the angle at which Autonoe orbits in relation to the orbital plane is 152.284 degrees. The orbital eccentricity is 0.3166, it is the degree at which Autonoe orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Autonoe in Greek Mythology

Autonoe was an ancient Greek Goddess who was the daughter of King Cadmus of Thebes and the goddess Harmonia. Thebes is a city in southern mainland Greece, that is you exclude the Greek Islands. Autonoe married Aristaeus who was a minor Greek God and had two children, Actaeon and Macris. Greek Mythology

The name Autonoe was chosen because it ends with the letter "e". According to NASA, moons that are retrograde in orbit end with the letter "e". The link at the time of writing referred to Jupiter but Jupiter is Roman whereas Autonoe is a Greek Legend.

Pasiphae Moon Group

Pasiphae group of Jovian Moons are all believed to have been created from the same source, notably through the result of an asteroid collision. The remnants were captured by Jupiters immense gravity and became satellites.

The largest of the group is Pasiphae from which the group gets it name from. Although, believed to be the result of a collision, confidence in this is lower than other groups because amongst other things, they all have differing colours, eccentricity and inclination.

There is doubt as to whether Sinope is from the same source as the others. It may exhibit some of the characteristics but there is more to indiciate that its source is elsewhere. Pasiphae contains 99% of the mass of the group without Sinope being included, otherwise it is down to 87% N.A.S.A.

List of Members in Pasiphae Group

Autonoe Facts

Orbital Circumference147,145,544.12 km
Furthest from parent (Apoasis)31,641,848 km
Mass89,920,105,985,832 kg
Density2.6 g/cm3
Volume34 km3
Orbital DirectionRetrograde, opposite to the parents direction
Date of Discovery10 December 2001
DiscovererScott S. Sheppard, David C. Jewitt and Jan T. Kleyna
Orbital Period761.01
Semi-Major Axis24,033,000 km
Equatorial Circumference12.6 km
Mean Radius2.0 (assuming an albedo of 0.04) km
Surface Area50.27 km2
Surface Gravity0.002 m/s2
Average Orbit Velocity8,056.6 km/h
Orbital Inclination152.284
Orbital Eccentricity0.3166

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