It is suspected that many Trojan asteroids are in fact small planetesimals captured in the LOCATION@1 point of LOCATION@2 system during the outer migration of the giant planets , NUMBER@1 billion years ago .

It is thought that many Trojan asteroids are in fact small planetesimals captured in the LOCATION@1 point of LOCATION@2 system during the farther migration of the giant planets , NUMBER@1 billion years ago .
