Encyclopedia > Helene (moon)

Article Content

Helene (moon)

Helene, as imaged by Voyager 2 (NASA)

Helene is a moon of Saturn, discovered by Laques and Lecacheux in 1980 from ground-based observations. It is co-oribtal with Dione and located in its leading Lagrangian point (L₄) and hence is sometimes referred to as "Dione B".

Orbital radius: 377,400 km
Diameter: 33 km (36 x 32 x 30)
Mass: Unknown
Orbital period: 2.7369 days
Orbital inclination: 0.2°

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Eurofighter

... the upcoming F/A-22 Raptor and F-35 fighters under development in the United States, has been the subject of much speculation, much of it negative, though opinions differ. ...