  Small Solar system bodies serve as pristine records that have been minimally
altered since their formation. Their observations provide valuable information
regarding the formation and evolution of our Solar system. Interstellar objects
(ISOs) can also provide insight on the formation of exoplanetary systems and
planetary system evolution as a whole. In this work, we present the application
of our framework to search for small Solar system bodies in exoplanet transit
survey data collected by the Antarctic Search for Transiting ExoPlanets (ASTEP)
project. We analysed data collected during the Austral winter of 2021 by the
ASTEP 400 telescope located at the Concordia Station, at Dome C, Antarctica. We
identified 20 known objects from dynamical classes ranging from Inner Main-belt
asteroids to one comet. Our search recovered known objects down to a magnitude
of $V$ = 20.4 mag, with a retrieval rate of $\sim$80% for objects with $V \le $
20 mag. Future work will apply the pipeline to archival ASTEP data that
observed fields for periods of longer than a few hours to treat them as
deep-drilling datasets and reach fainter limiting magnitudes for slow-moving
objects, on the order of $V\approx $ 23-24 mag.
