Universe Guide

Megaclite, Moon of Jupiter

Megaclite is a Moon that orbits round the planet Jupiter. It is also know by other designations, JXIX, S/2000 J8. Its mass is estimated/calculated at being 209,813,580,633,607 kg. Its density has been calculated at being 2.6. Its volume is 82.

Megaclite was discovered on 25 November 2000 by Scott S. Sheppard, David C. Jewitt, Yanga R. Fernandez, and Eugene A. Magnier.

The orbital period, i.e. the period it takes to complete an orbit round Jupiter is 752.8 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 3km. 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 12 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 23810, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Megaclite is 17.0 km. The surface area of Megaclite is 91.61. The surface gravity of the said item is 0.002. The Mean orbit velocity, that is the speed at which it orbits is 7898.80 km/h. The is the average distance in km of the object is from its parent 23808000.00.

The orbital inclination, the angle at which Megaclite orbits in relation to the orbital plane is 152.8 degrees. The orbital eccentricity is 0.4211, it is the degree at which Megaclite orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

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

Megaclite Facts

DesignationsJXIX, S/2000 J8
Mass (kg)209,813,580,633,607
Density (g/cm^3)2.6
Volume (km^3)82
Orbital DirectionRetrograde, opposite to the parents direction
Date of Discovery25 November 2000
DiscovererScott S. Sheppard, David C. Jewitt, Yanga R. Fernandez, and Eugene A. Magnier
Orbital Period (days)752.8
Equatorial Radius (km)3
Escape Velocity (km/h)12
Semi-Major Axis (10^3 km)23810
Equatorial Circumference (km)17.0
Surface Area (km^2)91.61
Surface Gravity (m/s^2)0.002
Mean Orbit Velocity (km/h)7898.80
Average Orbit Distance (km)23808000.00
Orbital Inclination (degrees)152.8
Orbital Eccentricity0.4211

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