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Psamathe, Moon of Neptune

Psamathe is a Moon that orbits round the planet Neptune. Its orbit circumference, the total distance it travels round its planetary parent is 290,917,287.50 km. The furthest it gets from its orbital parent (apoasis) is 66,415,766 km. Its mass is estimated/calculated at being 14,986,684,330,971,900 kg. Its density has been calculated at being 1.5 g/cm3. Its volume is 33,510 km3.

Psamathe was discovered on 29 August 2003 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 Neptune is 9128.74 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 48,096,000 km, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Psamathe is 125.7 km. The mean radius, that is the average radius of Psamathe is 20.0 (assuming an albedo of 0.04) km. The surface area of Psamathe is 5,026.55 km2. The surface gravity of the said item is 0.003 m/s2. The average orbit velocity, that is the speed at which it orbits is 1,335.8 km/h.

The orbital inclination, the angle at which Psamathe orbits in relation to the orbital plane is 126.312 degrees. The orbital eccentricity is 0.3809, it is the degree at which Psamathe orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Psamathe Facts

Orbital Circumference290,917,287.50 km
Furthest from parent (Apoasis)66,415,766 km
Mass14,986,684,330,971,900 kg
Density1.5 g/cm3
Volume33,510 km3
Date of Discovery29 August 2003
DiscovererScott S. Sheppard, David C. Jewitt and Jan T. Kleyna
Orbital Period9128.74
Semi-Major Axis48,096,000 km
Equatorial Circumference125.7 km
Mean Radius20.0 (assuming an albedo of 0.04) km
Surface Area5,026.55 km2
Surface Gravity0.003 m/s2
Average Orbit Velocity1,335.8 km/h
Orbital Inclination126.312
Orbital Eccentricity0.3809

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