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...emi-major axes as objects hop between resonances. The orbital poles of the objects circle that of the Solar System's [[Laplace plane]], which at large semi-ma ...Nine.png|thumb|260px|Secular evolution of eTNOs induced by Planet Nine for objects with semi-major axis of 250 AU.<ref name="Beust_2016" /><ref name="Batygin_ ...

{{Short description|Hypothetical Solar System planet}} {{About|the hypothetical planet first suggested in 2014|the dwarf planet previously classified as th ...

...strogeology)|volatile ices]].<ref name = "Pluto updates"/> The size of the hypothetical impactor has been estimated as 150–300&nbsp;km.<ref name="LPSC2017McKinnon" ...bsurface oceans on other outer Solar System satellites and trans-Neptunian objects.<ref name="Kamata2019"/> ...

| semimajor = {{val|−1.2723|0.0001|fmt=none|u=AU}}{{efn|1=Objects on hyperbolic trajectories have negative semimajor axis, giving them a posi ...ed below 27.5 mag (the limit of [[Hubble Space Telescope]] for fast-moving objects) around 1 January 2018. By late 2019, it should have dimmed to 34 mag.}} ...