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Trojan asteroid

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Trojan asteroid
n
(Astronomy & Space / Celestial Objects) one of a number of asteroids that have the same mean motion and orbit as Jupiter, preceding or following the planet by a longitude of 60°


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Past simulations have tracked the trajectories of these planetesimals and showed they wind up forming the Kuiper belt of icy debris where Pluto sits, some of the distant satellites of Jupiter and Saturn, and Trojan asteroids, bodies that share Jupiter's orbit but are centred at two points ahead of and behind the planet.
Some of the debris became trapped by Jupiter's gravity and could account for the planet's retinue of Trojan asteroids, a group of objects that lead and trail the planet today, and have not been explained by any other theory, says Levison.
The sun, Jupiter, and the so-called Trojan asteroids, for instance, form such a triangle, which rotates about the system's center of mass.
 
 
 
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