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We report a complete set of $^{59}$Co NMR data taken on the $x=2/3$ phase ofsodium cobaltates Na$_{x}$CoO$_{2}$, for which we have formerly established thein plane Na ordering and its three dimensional stacking from a combination ofsymmetry arguments taken from Na and Co NQR/NMR data. Here we resolve all theparameters of the Zeeman and quadrupolar Hamiltonians for all cobalt sites inthe unit cell and report the temperature dependencies of the NMR shift and spinlattice relaxation $T_{1}$ data for these sites. We confirm that threenon-magnetic Co$^{3+}$ (Co1) are in axially symmetric positions and that thedoped holes are delocalized on the nine complementary magnetic cobalt sites(Co2) of the atomic unit cell. The moderately complicated atomic structureresumes then in a very simple electronic structure in which the electronsdelocalize on the Co2 kagom\'e sublattice of the triangular lattice of Cosites. The observation of a single temperature dependence of the spinsusceptibilities indicates that a single band picture applies, and that themagnetic properties are dominated by the static and dynamic electronicproperties at the Co2 sites. We evidence that they display a strong in planeelectronic anisotropy initially unexpected but which accords perfectly with anorbital ordering along the kagom\'e sublattice organization. These detaileddata should now permit realistic calculations of the electronic properties ofthis compound in order to determine the incidence of electronic correlations.

59Co NMR evidence for charge and orbital order in the kagome like structure of Na2/3CoO2