[填空题]
The Moon orbits the wwyqzmt(i0y8*/s;ca *tkj ,xEhz .0*5x zjtmju q7gx8arth such that the same side always faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat j qmg 87xu h5.x0tz*zjthe Moon as a particle orbiting the Earth.) $\times10^{ -6}$