Originally posted by Draken
reply to post by Drunkenparrot
Ive got a degree in geology, so im pretty aware on how planetary bodies form and get their orbits. Without knowing the exact mass and make up of
planet X, we can not say anything about its orbit yet. The current info we have on the body is highly speculative. All that we know is that we MIGHT
have another large body out near the oort cloud really.
Let alone it might be a dwarf companion star to the sun, making the orbit even more unpredictable.
edit on 15-2-2011 by Draken because: (no
Unless it's mass approaches a substantial fraction of the Sun's mass, it's mass doesn't figure into the calculation, In order for it's mass to
make that approach, it would have to be hot, a brown dwarf at the least. If it were a brown dwarf, that close to the sun, it would likely have been
found and confirmed long ago.
So then, the planet's mass doesn't count in the orbital calculations, the Sun's mass does.
Furthermore, since the article says that it's currently 15,000 AU away, and if we assume that it is at it's farthest point away from the sun in
it's orbit, and we further assume that the other side of it's orbit (closest approach to the sun) comes inside the Earth's 1 AU orbit, there are a
few constants in celestial mechanics which will apply:
All planets are in elliptical orbits. In an elliptical orbit, the barycenter of the orbit is at one focus or the other of the ellipse. In the case of
all the known planets, that barycenter is inside the sun, because of the wide discrepancy between the solar mass and the planetary mass. To put it
simply, the planets just don't have the mass to sling the sun around,
Now, in order for this planet to orbit to within one AU of the sun, the barycenter MUST be within that one AU distance from the sun. That means that
they CAN'T be of anything approaching equal mass, but the planet must in fact have FAR less mass than the sun. If it's mass were greater, and the
barycenter farther out, it would never approach that closely to the sun. they would orbit a common barycenter "out there".
Furthermore, since it is currently 15,000 AU away, and the barycenter, being one of the focii of it's elliptical orbit in obedience to celestial
mechanics, the orbit would HAVE to be a very tight, narrow ellipse, with the other focus at the other end of it. For it to travel that 15,000 AU from
"there" to "here" in ta time frame consistent with this 2012 Nibiru nonsense, it would have to travel several times faster than a comet, and
break all the laws of orbital mechanics.
Therefore, whatever it is, it cannot be this mythical Nibiru, and in all likelihood has a far wider orbit, which will NEVER approach Earth.