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Planet Nine

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a1pha

#1
Posted : 1/20/2016 9:54:58 PM

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Joined: 12-Feb-2009

Last visit: 08-Feb-2024

ars technica coverage

EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM

Abstract wrote:

Recent analyses have shown that distant orbits within the scattered disk population of the Kuiper Belt exhibit an unexpected clustering in their respective arguments of perihelion. While several hypotheses have been put forward to explain this alignment, to date, a theoretical model that can successfully account for the observations remains elusive. In this work we show that the orbits of distant Kuiper Belt objects (KBOs) cluster not only in argument of perihelion, but also in physical space. We demonstrate that the perihelion positions and orbital planes of the objects are tightly confined and that such a clustering has only a probability of 0.007% to be due to chance, thus requiring a dynamical origin. We find that the observed orbital alignment can be maintained by a distant eccentric planet with mass gsim10 m⊕ whose orbit lies in approximately the same plane as those of the distant KBOs, but whose perihelion is 180° away from the perihelia of the minor bodies. In addition to accounting for the observed orbital alignment, the existence of such a planet naturally explains the presence of high-perihelion Sedna-like objects, as well as the known collection of high semimajor axis objects with inclinations between 60° and 150° whose origin was previously unclear. Continued analysis of both distant and highly inclined outer solar system objects provides the opportunity for testing our hypothesis as well as further constraining the orbital elements and mass of the distant planet.

The Astronomical Journal

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"Facts do not cease to exist because they are ignored." -A.Huxley

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Koornut

#2
Posted : 1/20/2016 10:06:00 PM

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Joined: 13-Nov-2014

Last visit: 05-Dec-2020

I just read this in the paper this morning, if it is there, they say it will take up to five years to observe.
Planet 9, I know it's a working title but I kinda like it as a name.

Inconsistency is in my nature.

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Sounds

I'm just waiting for these bloody plants to grow

anne halonium

#3
Posted : 1/20/2016 10:27:20 PM