On Thu, 21 Jul 2016 01:30:55 -0700 (PDT), RichA
wrote:

On Thursday, July 21, 2016 at 12:27:57 AM UTC-4, Quadibloc wrote:
Now it is seen as possibly responsible for a basic fact about the Solar System:

http://www.popularmechanics.com/spac...-weird-orbits/

And of course, this being due to "gravity" and "angular momentum", we wouldn't
know about this if it wasn't for Isaac Newton!

John Savard

Doesn't have the same ring as "Planet X" but if this thing is 3-10x as far as Pluhe to, it's impressive the Sun holds it in orbit.

Why? That just puts it in the scattered disc, along with millions of
smaller bodies. Even a thousand times farther out we have billions of
Oort Cloud bodies orbiting the Sun (more than a light year away).

There's no limit on how far away an orbiting body can be from the Sun.
It just comes down to the distance at which some other body will
perturb it from orbit.

Far more interesting, I think, is the suggestion that this
hypothesized body is a captured rogue planet. Capturing an outside
body requires at least a three-body interaction, so if true, it must
have come much deeper into the Solar System than its current position.