We propose to study by powder neutron diffraction the ordered magnetic state of the pyrochlore compound Y2Ir2O7. There is currently an increasing interest in the condensed matter community for the physical properties of 5d electron oxides due to the competing interactions between large spin-orbit coupling on one hand and strong electronic correlation, that can stabilize exotic electronic and magnetic states. Theoretical calculations predicts that the magnetic structure of this oxide consists in a "all-in all -out" magnetic arrangement of Ir moments. Experiments to date have failed to evidence signs of magnetic ordering but we are convinced in the light of recent experiments on WISH (Sr2IrO4), a small ordered moment can be detected by powder diffraction.