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Despina, Moon of Neptune

Despina is a Moon that orbits round the planet Neptune. The furthest it gets from its orbital parent (apoasis) is 52,537 km. Its mass is estimated/calculated at being 2,098,135,806,336,070,000 kg. Its density has been calculated at being 1.3 g/cm3. Its volume is 1,767,146 km3.

It was discovered in the year 1989 by S. Synnott, Voyager 2.

The orbital period, i.e. the period it takes to complete an orbit round Neptune is 0.335 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 52,526 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Despina is 471.2 km. The mean radius, that is the average radius of Despina is 75.0 km. The surface area of Despina is 70,685.83 km2. The surface gravity of the said item is 0.025 m/s2. The average orbit velocity, that is the speed at which it orbits is 41,048.6 km/h.

The orbital inclination, the angle at which Despina orbits in relation to the orbital plane is 0.07 degrees. The orbital eccentricity is 0.000, it is the degree at which Despina orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Despina Facts

Furthest from parent (Apoasis)52,537 km
Mass2,098,135,806,336,070,000 kg
Density1.3 g/cm3
Volume1,767,146 km3
Year of Discovery1989
DiscovererS. Synnott, Voyager 2
Orbital Period0.335
Semi-Major Axis52,526 km
Equatorial Circumference471.2 km
Mean Radius75.0 km
Surface Area70,685.83 km2
Surface Gravity0.025 m/s2
Average Orbit Velocity41,048.6 km/h
Orbital Inclination0.07
Orbital Eccentricity0.000

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