Planet X revamped after the discovery of the Sedna-like object 2012 VP$_{113}$?

Lorenzo Iorio

doi:10.1093/mnrasl/slu116

paper

Planet X revamped after the discovery of the Sedna-like object 2012 VP $_{113}$ ?

arXiv:1404.0258 · doi:10.1093/mnrasl/slu116

Abstract

The recent discovery of the Sedna-like dwarf planet 2012 VP $_{113}$ by Trujillo and Sheppard has revamped the old-fashioned hypothesis that a still unseen trans-Plutonian object of planetary size, variously dubbed over the years as Planet X, Tyche, Thelisto, may lurk in the distant peripheries of the Solar System. This time, the presence of a super-Earth with mass $m_{X} = 2 - 15 m_{\oplus}$ at a distance $d_{X} \approx 200 - 300$ astronomical units (AU) was proposed to explain the observed clustering of the arguments of perihelion $ω$ near $ω \approx 0^{\circ}$ but not $ω \approx 18 0^{\circ}$ for Sedna, 2012 VP $_{113}$ and other minor bodies of the Solar System with perihelion distances $q > 30$ AU and semimajor axes $a > 150$ AU. Actually, such a scenario is strongly disfavored by the latest constraints $Δ ϖ ˙$ on the anomalous perihelion precessions of some Solar System's planets obtained with the INPOP and EPM ephemerides. Indeed, they yield $d_{X} ≳ 496 - 570$ AU ( $m_{X} = 2 m_{\oplus}$ ), and $d_{X} ≳ 970 - 1111$ AU ( $m_{X} = 15 m_{\oplus}$ ). Much tighter constraints could be obtained in the near future from the New Horizons mission to Pluto.

LaTex2e, 2 pages, no figures, no tables. Accepted for publication in Monthly Notices of the Royal Astronomical Society Letters (MNRAS Letters)

Planet X revamped after the discovery of the Sedna-like object 2012 VP $_{113}$ ?

Abstract

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Planet X revamped after the discovery of the Sedna-like object 2012 VP113​?

Abstract

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Cited by in corpus (6)

Planet X revamped after the discovery of the Sedna-like object 2012 VP $_{113}$ ?