Tidal deformability parameter λ of a neutron star describes quadrupole moment of neutron star due to external gravitational field is described by tidal deformability parameter. In this work, we calculate λ in binary neutron stars within relativistic mean field model. λ depends on love number k_2. The dominant contribution in k_l where l = 2, 3,... comes from the one of l = 2. It is expected that these k_l depend quite sensitively on equation of states of neutron star core. We use TM1 parameter set to calculate the equation of state of neutron star core and investigate the effects of the hyperon coupling constant prescriptions of the corresponding parameter set i.e., the ones of SU(6) and HX1 on k_l and λ. We have found that k_l and λ are insensitive in respect to the hyperon coupling constant variation.
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