Sources
open directory project
Help build the largest human-edited directory on the web.
Submit a site - Become an editor
Wikipedia. Licensed under the GNU Free Documentation License.
Are you an expert in this subject? Join the discussion and share your knowledge at Wikipedia.org.
Trojan moon
From Wikipedia, the free encyclopedia
A Trojan moon is a natural satellite of a planet occupying the L4 or L5 equilateral Lagrangian points of a primary-moon system. They are named by analogy with the Trojan asteroids, which occupy the L4 and L5 points of the Sun-Jupiter system.
Four examples are known, all in Saturn's system: Telesto and Calypso bracket Tethys, whilst Helene and the newly discovered Polydeuces bracket Dione. The Earth-Moon points have been repeatedly searched for Trojans, but nothing else than a slight overabundance of dust has ever been found.
|
|
||
|---|---|---|
| Planetary satellites | Terrestrial · Martian · Jovian · Saturnian · Uranian · Neptunian |  |
| Other satellite systems | Plutonian · Eridian · Asteroid satellites | |
| Largest satellites | Ganymede · Titan · Callisto · Io · Moon · Europa · Triton Titania · Rhea · Oberon · Iapetus · Charon · Umbriel · Ariel · Dione · Tethys · Enceladus · Miranda · Proteus · Mimas |
|
| Inner satellites • Trojans • Irregulars • List • List by diameter • Timeline of discovery • Naming | ||
 |
This astronomy related article is a stub. You can help Wikipedia by expanding it. |