  The production and properties of the resonances with the strangeness S=+1 in
the system of nK+ were studied in the reaction np->npK+K- at the momentum of
incident neutrons Pn=(5.20 +/- 0.12)GeV/c. A number of peculiarities were found
in the effective mass spectrum of the mentioned above system. Their widths are
comparable with the mass resolution. The estimation of the spins of resonances
was carried out and the rotational band connecting the resonances masses and
their spins was constructed.
