Planet Neptune

Some Facts about The Neptunian Moon, Nereid
courtesy of NASA

Discovered ByG. Kuiper
Date of Discovery1949
Average Distance from Neptune5,513,400 km (metric)
Equatorial Radius170 km (metric)
Mass20,000,000,000,000,000,000 kg (metric)
Orbit Period (Length of Year)360.13619 Earth days
Orbital Eccentricity0.7512
Orbital Inclination to Ecliptic27.6°
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