Nix

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Nix
Nix is a natural satellite of Pluto. Nix follows a circular orbit in the same plane as Charon. It is in a 3:2 orbital resonance with Hydra, and a 9:11 resonance with Styx (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 Styx and Hydra in a 2:3 ratio. Nix has been measured to be 54 by 41 by 36 kilometers in diameter, indicating a very elongated shape, and a very high geometric albedo. Detailed images of the moon have revealed at least 6 impact craters on it, the largest of which is about 15 km across. Nix (moon) - Wikipedia, the free encyclopedia
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Short Description Nix is a natural satellite of Pluto. Nix follows a circular orbit in the same plane as Charon. It is in a 3:2 orbital resonance with Hydra, and a 9:11 resonance with Styx (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 Styx and Hydra in a 2:3 ratio. Nix has been measured to be 54 by 41 by 36 kilometers in diameter, indicating a very elongated shape, and a very high geometric albedo. Detailed images of the moon have revealed at least 6 impact craters on it, the largest of which is about 15 km across. Nix (moon) - Wikipedia, the free encyclopedia
Discovered by Hubble Space Telescope, Pluto Companion Search Team
Discovery date 15 June 2005
Type Moon
AddInfo Pluto II
Satellite of Pluto
Minor planet number 134340 Pluto II
Orbit Prograde
Rotation Direct
Apoapsis 05 48 786 km
Periapsis 05 48 563 km
Semi-major axis 05 48 694 km
Distance from Sun 02 39.54 au /3
Eccentricity 0.002 3
Orbital period 24.854 63 days
Orbital speed  0.1424 km/s
Inclination to the equator 000.133°
Diameter/Size 02 39 km
Dimensions 50 km × 35 km × 33 km
Mass 1016×4.5 ± 4.0 kg
Surface gravity  0 m/s2
Escape velocity  0 m/s
Rotation period 1.829 ± 0.009 day | chaotic (increased by 10% between discovery and flyby)
Axial tilt 132°
Albedo geometric 0.56
Temperature mean 02 44 K
Apparent magnitude 23
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