In article ,
(AA Institute) wrote:

If the perigee of the asteroid's orbit is 40,000 km and say the apogee
is 200,000 km then that may be a safe option. If the apogee goes much
above 250,000 km then there's the Moon's perturbing influence to worry
about, since it orbits at around 380,000 km.

There's ALWAYS the Moon's perturbing influence to worry about. Have you
ever done any three-body problems? There's a reason they can't be done
analytically, you know. Especially when one of the objects is massive
enough to cause tides on the other object from 225,000 miles away, as
well as influence menstrual, mating, spawning and behavioral patterns of
a good deal of the life on it.

--
Herb Schaltegger, B.S., J.D.
"Never underestimate the power of human stupidity."
~ Robert A. Heinlein
http://www.angryherb.net