In article e7d560f6-430d-45aa-96da-f433c38f4d46
@i5g2000yqh.googlegroups.com, says...

On Nov 20, 1:51*am, Brad Guth wrote:
On Nov 18, 12:49*pm, Orval Fairbairn
wrote:
Not too likely, unless it came into close proximity of the Earth.
Such a
planet would enter at superorbital speed, pass perihelion, and then fly
off into space, never to return.

Or it could make a low differential speed glancing blow off our moon
or Earth, and stick around.

yeah just think of playing pool........ Just one shot can change so
much

Orbital mechanics is not pool. Guthball and Bobbert have no idea what
in the hell they're talking about. Math and physics... get some.

Jeff
--
"the perennial claim that hypersonic airbreathing propulsion would
magically make space launch cheaper is nonsense -- LOX is much cheaper
than advanced airbreathing engines, and so are the tanks to put it in
and the extra thrust to carry it." - Henry Spencer