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Neptune: Moons: Thalassa: Facts & Figures
Discovered By
R. Terrile, Voyager 2
Date of Discovery
1989
Average Distance from Neptune
Metric:
50,070 km
Equatorial Radius
Metric:
40 km
Mass
Metric:
800,000,000,000,000,000 kg
Scientific Notation:
8 x 10
17
kg
Orbit Period (Length of Year)
0.311485 Earth days
Orbital Eccentricity
0.000
Orbital Inclination to Ecliptic
0.21 degrees
1. Triton
2. Nereid
3. Naiad
4. Thalassa
5. Despina
6. Galatea
7. Larissa
8. Proteus
9. Halimede
10. Psamathe
11. Sao
12. Laomedeia
13. Neso
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Last Updated: 10.06.03
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