väike taevakeha (enamasti asteroid), mis jagab orbiiti mõne planeedi või muu suurema taevakehaga, olles sellest 60 kraadi eespool või tagapool Lagrange'i punktis L4 või L5
a small celestial body (mostly asteroids) that shares the orbit of a larger body, remaining in a stable orbit approximately 60° ahead of or behind the main body near one of its Lagrangian points L4 and L5
In contrast, only one Earth Trojan (asteroid 2010 TK7) has been identified, the discovery of which was in a serendipitous way by the Wide-field Infrared Survey Explorer mission in space.
