  On 2022 September 26th, 23:14 UT the NASA/DART (Double Asteroid Redirection
Test) spacecraft successfully impacted Dimorphos, the secondary component of
the binary (65803) Didymos system, demonstrating asteroid orbit deflection for
the first time. A large amount of debris, consisting on a wide size frequency
distribution of particulates (from micron-sized dust to meter-sized boulders),
was released, and a long-lasting tail has been observed over more than 9 months
since impact. An important fraction of the ejecta mass has been ejected as
individual meter-sized boulders, as have been found in images obtained by the
Light Italian CubeSat for Imaging of Asteroid (LICIACube), as well as from the
Hubble Space Telescope (HST). While the boulders observed by LICIACube had
projected speeds of several tens of meter per second, those seen by the HST
were about one hundred time slower. In this paper we analyze the long-term
orbital evolution of those slow boulders using different dynamical codes,
providing constraints on the fate of such large particles, and giving insight
on the possibility of observing some of those boulders that might remain in
orbit at the time of the ESA/Hera mission arrival to the binary system in late
2026.
