Universe Guide

Pasiphae, Moon of Jupiter

Pasiphae is a Moon that orbits round the planet Jupiter. Its mass is estimated/calculated at being 299,733,686,619,439,000 kg. Its density has been calculated at being 2.6. Its volume is 113097.

Pasiphae was discovered on 27 January 1908 by Philibert Jacques Melotte.

The orbital period, i.e. the period it takes to complete an orbit round Jupiter is 743.6 days. The figure is also known as the sidereel period. The figure comes from N.A.S.A..

The Equatorial Radius of the object is 30km. The Equatorial Radius is based on the assumption of the Albedo value. The value is the radius in km of the said object at the Equator.

The albedo of the object is 0.04. The Albedo is the amount of radiation that is reflected back into space by the object.

The Escape Velocity of the object is 131 km/h. The Escape Velocity is the speed an object needs to be travelling in order to break free from the objects gravity. The larger an object is, the more velocity (speed) is needed to break free from the object.The Semi-Major Axis of the orbit is 23620, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Pasiphae is 188.5 km. The surface area of Pasiphae is 11,309.73. The surface gravity of the said item is 0.022. The Mean orbit velocity, that is the speed at which it orbits is 7957.40 km/h. The is the average distance in km of the object is from its parent 23624000.00.

The orbital inclination, the angle at which Pasiphae orbits in relation to the orbital plane is 151.4 degrees. The orbital eccentricity is 0.409, it is the degree at which Pasiphae orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Pasiphae Mythology Legend

Pasiphae is the wife of King Minos of Crete. Pasiphae had an affair with Zeus, king of the Greek Gods and produced a son, Ammon. Her story is more tragic, Pasiphae was forced to make love to a bull by Poseidon. The result of the consummation was Minotaur, the half-bull, half-man flesh eating monster that was forced to live in the Labyrinth. The bull would eventually be killed by Theseus, a Greek hero.

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

Pasiphae Facts

Mass (kg)299,733,686,619,439,000
Density (g/cm^3)2.6
Volume (km^3)113097
Orbital DirectionRetrograde, opposite to the parents direction
Date of Discovery27 January 1908
DiscovererPhilibert Jacques Melotte
Orbital Period (days)743.6
Equatorial Radius (km)30
Escape Velocity (km/h)131
Semi-Major Axis (10^3 km)23620
Equatorial Circumference (km)188.5
Surface Area (km^2)11,309.73
Surface Gravity (m/s^2)0.022
Mean Orbit Velocity (km/h)7957.40
Average Orbit Distance (km)23624000.00
Orbital Inclination (degrees)151.4
Orbital Eccentricity0.409

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