Key facts
- Category
- Moons
- Object class
- Trojan moon
- Scale fact
- 45.2 kmmaximum extent
- Host
- Saturn
Helene
45.2 kmmaximum extent
Explore Helene to scaleVisual creditCassini 2011 / NASA / JPL / Space Science Institute; retouched by WolfmanSF / Public domainSource: Wikimedia Commons
Details
Helene is a small Trojan moon of Saturn that shares Dione’s orbit, holding a stable position about 60 degrees ahead of the much larger moon. Cassini revealed an irregular world with smooth-looking deposits, grooves, and impact scars.
Helene shares Dione’s orbit while remaining near the leading Lagrange region, about 60 degrees ahead of the larger moon; Polydeuces occupies the corresponding trailing region. Cassini’s close images resolved Helene as an irregular body with impact scars, grooves and smooth-looking deposits, adding surface detail to a moon defined chiefly by its co-orbital geometry.
Links
- Wikipedia
- Helene on Wikipedia
Size neighbors
Objects near Helene on the scale
Sources
References for Helene
Measurements and descriptive context are compiled by the Scale of Space team from the references below. If you find an error, please let us know.
- Helene — Wikipedia
- Visual reference: Wikimedia Commons (Cassini 2011 / NASA / JPL / Space Science Institute; retouched by WolfmanSF, Public domain)
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About
Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.
Guides explain selected parts of that range, while focused views filter the objects by subject.