On 17 Feb 2006 12:17:26 -0800, in a place far, far away, "Will McLean"
made the phosphor on my monitor glow in such a
way as to indicate that:

How practical is it to tailor a parking orbit for lunar missions that
is reasonably efficent to reach from KSC and precesses at 180 degrees a
lunar month?

What's wrong with 360?


Nothing. Any multiple of 180 will do. 180 seemed more doable, based on
the orbits I've been able to find information on.

Oh, I misunderstood. You're looking for an actual precession in an
inertial frame? I thought you meant an apparent precession from the
viewpoint of the earth. How does 180 help you? I would think that
360 would be the only one that would give you constant angle with
respect to the earth.

Anyway, what's wrong with L1, other than the performance hit (a
penalty I think well worth paying)?