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Neptune IV

Proper NameThalassa
DesignationNeptune IV
Primary PlanetNeptune
Orbital Period7 hours, 29 minutes
Distance from NeptuneSemi-Major Axis: 50,074 km
Periapsis: 50,065 km
Apoapsis: 50,085 km
Rotation Period7 hours, 29 minutes (synchronous orbit)
Dimensions108 x 100 x 52 km
NotesThalassa is the second innermost satellite of Neptune after tiny Naiad, and like Naiad and Neptune's third moon Despina, this distinctly flattened object is thought to have been formed as an accumulation of debris after Neptune's cataclysmic capture of its huge moon Triton.


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