  In this paper, we perform a dynamical study of the population of objects in
the unstable quasi-Hilda region. The aim of this work is to make an update of
the population of quasi-Hilda comets (QHCs) that have recently arrived from the
Centaurs region. To achieve our goal, we have applied a dynamical criteria to
constrain the unstable quasi-Hilda region that allowed us to select 828
potential candidates. The orbital data of the potential candidates was take
from the ASTORB database and we apply backward integration to search by those
that have recently arrived from the outer regions of the Solar System. Then we
studied the dynamical evolution of the candidates from a statistical point of
view by calculating the time-averaged distribution of a number of clones of
each candidate as a function of aphelion and perihelion distances. We found
that 47 objects could have been recently injected into the inner Solar System
from the Centaur or transneptunian regions. These objects may have preserved
volatile material and are candidates to exhibit cometary activity.
