The techniques used to target the asteroids could also be employed in tracking hazardous asteroids and interstellar objects.

Spacecraft headed to DART asteroid crash site images 2 faint space rocks to boost planetary defense tactics

Source: space
Source Link: https://www.space.com/astronomy/asteroids/spacecraft-headed-to-dart-asteroid-crash-site-images-2-faint-space-rocks-to-boost-planetary-defense-tactics