Styx

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Styx
Styx is a small natural satellite of Pluto. Styx orbits the Pluto–Charon barycenter at a distance of 42,656 km, putting it between the orbits of Charon and Nix. It is in an 11:6 orbital resonance with Hydra, and an 11:9 resonance with Nix (the ratios represent numbers of orbits completed per unit time; the period ratios are the inverses). As a result of this "Laplace-like" 3-body resonance, it has conjunctions with Nix and Hydra in a 2:5 ratio. In contrast to its orbit, Styx's rotation is very chaotic; like the other small Plutonian moons, Styx's rotation is not tidally locked, and it varies rapidly over short timescales (with a current rate of about 3.239 days). Styx (moon) - Wikipedia, the free encyclopedia
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Short Description Styx is a small natural satellite of Pluto. Styx orbits the Pluto–Charon barycenter at a distance of 42,656 km, putting it between the orbits of Charon and Nix. It is in an 11:6 orbital resonance with Hydra, and an 11:9 resonance with Nix (the ratios represent numbers of orbits completed per unit time; the period ratios are the inverses). As a result of this "Laplace-like" 3-body resonance, it has conjunctions with Nix and Hydra in a 2:5 ratio. In contrast to its orbit, Styx's rotation is very chaotic; like the other small Plutonian moons, Styx's rotation is not tidally locked, and it varies rapidly over short timescales (with a current rate of about 3.239 days). Styx (moon) - Wikipedia, the free encyclopedia
Discovered by Mark Robert Showalter
Discovery date 26 June 2012
Type Moon
AddInfo Pluto V
Satellite of Pluto
Orbit Prograde
Rotation Direct
Apoapsis 05 42 656 km
Periapsis 05 42 656 km
Semi-major axis 05 42 656 ± 78 km
Distance from Sun 02 39.54 au /2
Eccentricity 0.005 787
Orbital period 20.161 55 days
Inclination to the equator 000.809°
Diameter/Size 01 6 km
Dimensions 7 x 5 km
Mass 1015×7.5 kg
Rotation period 3.24 ± 0.07 days (chaotic)
Axial tilt 082°
Albedo geometric 0.65
Apparent magnitude 27
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