[填空题]
The Moon orbits the Earth she 5c hoqn11cz.myp*-uch that g /::terz*c1jqvw *ffthe same side always faces the Earth. Determine the ratio fegq * tcz1jf :/r:vw*of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$