  Based on telescopic observations of Jupiter-family comets (JFCs), there is
predicted to be a paucity of objects at sub-kilometre sizes. However, several
bright fireballs and some meteorites have been tenuously linked to the JFC
population, showing metre-scale objects do exist in this region. In 2017, the
Desert Fireball Network (DFN) observed a grazing fireball that redirected a
meteoroid from an Apollo-type orbit to a JFC-like orbit. Using orbital data
collected by the DFN, in this study, we have generated an artificial dataset of
close terrestrial encounters that come within $1.5$ lunar distances (LD) of the
Earth in the size-range of $0.01-100$kg. This range of objects is typically too
small for telescopic surveys to detect, so using atmospheric impact flux data
from fireball observations is currently one of the only ways to characterise
these close encounters. Based on this model, we predict that within the
considered size-range $2.5\times 10^{8}$ objects ($0.1\%$ of the total flux)
from asteroidal orbits ($T_{J}>3$) are annually sent onto JFC-like orbits
($2<T_{J}<3$), with a steady-state population of about $8\times 10^{13}$
objects. Close encounters with the Earth provide another way to transfer
material to the JFC region. Additionally, using our model, we found that
approximately $1.96\times 10^{7}$ objects are sent onto Aten-type orbits and
$\sim10^{4}$ objects are ejected from the Solar System annually via a close
encounter with the Earth.
