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Orbit data - Object data - Mythology - Links Go to the bottom of the page
Photo of the satellite Thalassa of the planet Neptune
Thalassa   Neptune IV (S/1989 N5)

Hide this area Orbit data
Mean distance from the planet Neptune 50.075 km
Orbital period around the planet Neptune (sideric) 0,311 d
Mean orbital velocity 11,67 km/s
Orbital inclination 0,205 °
Eccentricity of the orbit around the planet Neptune 0,0002
Hide this area Object data
Discovered by Richard John Terrile, Voyager 2 Team 1989
Mass 3,5 × 1017 kg
Equatorial radius 41 km
Mean density 1,3 g/cm³
Albedo 0,09
Apparent magnitude + 23,9 mvis
Hide this area Mythology

Thalassa is the Greek personification of the sea. Aether and Hemera were her parents. She's called the mother of Aphrodite by Zeus. She was the wife of Pontus and the mother of nine Telchines and all sea life.

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File icon NASA (Voyager 2) - Thalassa
© Calvin J. Hamilton ("Views of the Solar System")
File icon Welcome to the Planets
Online version of the "Planetary Data System Educational CD-ROM"
File icon A Multimedia Tour of the Solar System - The Nine Planets
© William A. Arnett
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