|Jun9-11, 08:55 AM||#1|
Stable Earth/Lunar Orbit
Hello! I don't know if this is in the right place or not. So if it's not, I won't misplace it in the future.
Anyway, I was recently thinking about the orbits of planets around Binary Stars, and was wondering if it's possible to have a similar orbit around the Earth and the Moon. Have a figure-eight like Orbit that would stay stable even with the movement of the Moon and the varying distance. Do you know if it's possible?
|Jun9-11, 05:09 PM||#2|
No, sadly, because it would soon be perturbed by Sun's gravity...
On a local scale, this even applies to the nominally stable L4 & L5 positions. IIRC, they are only metastable due to solar gravity, Earth's slightly elliptical orbit, Venus & Jupiter etc etc. However, a 'halo orbit' around those geometric positions *will* survive for a long time...
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