  Asteroid families are valuable source of information to many asteroid-related
re- searches, assuming a reliable list of their members could be obtained.
However, as the number of known asteroids increases fast it becomes more and
more difficult to obtain robust list of members of an asteroid family. Here we
are proposing a new approach to deal with the problem, based on the well known
Hierarchical Clustering Method (HCM). An additional step in the whole procedure
is introduced in order to reduce a so-called chaining effect. The main idea is
to prevent chaining through an al- ready identified interloper. We show that in
this way a number of potential interlopers among family members is
significantly reduced. Moreover, we developed an automatic on-line based portal
to apply this procedure, i.e to generate a list of family members as well as a
list of potential interlopers. The Asteroid Families Portal (AFP) is freely
available to all interested researchers.
