Dimorphos is a natural satellite or moon of the near-Earth asteroid 65803 Didymos, with which it forms a binary system. The moon was discovered on 20 November 2003 by Petr Pravec in collaboration with other astronomers worldwide. From Wikipedia
The gravity-assist maneuver brought Hera within 1,000 km of Deimos, providing unprecedented views of the moon's far side while en route to study asteroid Dimorphos.
