Planet Neptune

Some Facts about The Neptunian Moon, Larissa
courtesy of NASA

Discovered ByH. Reitsema, W. Hubbard, L. Lebofsky, D. Tholen
Date of Discovery1982
Average Distance from Neptune73,550 km (metric)
Equatorial Radius104 x 89 km (metric)
Mass800,000,000,000,000,000 kg (metric)
Orbit Period (Length of Year)0.554654 Earth days
Orbital Eccentricity0.00139
Orbital Inclination to Ecliptic0.20°
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