Gravitational radiation from a rotating triaxial body ($P=\frac{32G}{5c^5}{\Omega }^6(I_1-I_2{)}^2$)

For a rigid body rotating around its third principal axis, the anisotropic part of its second mass moment tensor oscillates at angular frequency $2\Omega$. The quadrupole formula gives the displayed luminosity. Equal transverse principal moments remove this rotating quadrupole and its leading gravitational wave emission.