[填空题]
The Moon orbits the Earth such that the same ovj4kwef c6 :/side always fajbu.t 1gk4*nn94qner ces the Earth. Determine the ratio of the Moon’s spin annnbke4t.q g1j9u * 4nrgular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$