  The problem of origin of outer irregular satellites of large planets is
considered. The capture way of their origin most probable, however there is not
detail theory. There are a number of irregular satellites, discovered in recent
time. It gives an ability to investigate the statistics of orbital interaction
and try to reconstruct real collision history of these objects We restrict this
consideration by pair of orbits with close elements: Kiviuq and Ijiraq and
determine period of close encounters between this satellites. It may be
considered as a first step on road to the construction of theory of origin of
the abundant class of irregular satellites.
