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1,706 claims from 1,050 papers are on the record. 46 have been checked so far; the other 1,660 have no check with a result yet.

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Status: Unchecked ×Keyword: orbital clustering ×Clear all

6 claims from 3 papers

1. Physics and Astronomy › Astro and Planetary Science

   EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM

   Batygin and Brown · The Astronomical Journal · 2016

   The authors show distant Kuiper belt objects cluster in physical space, and argue a distant eccentric planet of more than about 10 Earth masses could maintain this alignment.

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   1. UncheckedA distant eccentric planet over ~10 Earth masses, with its perihelion opposite the small bodies', could keep the observed orbital alignment in place.“We find that the observed orbital alignment can be maintained by a distant eccentric planet with mass greater than ~10 Earth masses, whose orbit lies in approximately the same plane as those of the distant Kuiper belt objects, but whose perihelion is 180 degrees away from the perihelia of the minor…”
   2. UncheckedThe proposed distant planet would also explain Sedna-like high-perihelion objects and some highly inclined, far-flung objects whose origin was unclear.“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 degrees whose origin was previously…”

2. Physics and Astronomy › Astro and Planetary Science

   The planet nine hypothesis

   Batygin, Adams, Brown and Becker · Physics Reports · 2019

   This review sets out the observational motivation, dynamical constraints and detection prospects for Planet Nine, a proposed planet meant to explain odd orbits of distant Kuiper belt objects.

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   1. UncheckedThe unusual orbits of distant Kuiper belt objects are described as pointing to an unseen ninth planet of roughly 5–10 Earth masses on a distant, eccentric, tilted orbit.“This newly outlined dynamical architecture of the distant solar system points to the existence of a new planet with mass of $m_9\sim 5-10\,M_{\oplus}$, residing on a moderately inclined orbit ($i_9\sim15-25°$) with semi-major axis $a_9\sim 400 - 800\,$AU and eccentricity between $e_9 \sim 0.2 - 0.5…”

3. Physics and Astronomy › Astro and Planetary Science

   Peculiar orbits and asymmetries in extreme trans-Neptunian space

   Marcos and Marcos · Monthly Notices of the Royal Astronomical Society · 2021

   The authors applied machine learning and nodal-distance analysis to 40 known extreme trans-Neptunian objects, finding possible clusters, close orbital approaches and an asymmetry that may reflect external perturbations.

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   1. UncheckedMachine-learning clustering of the 40 known extreme trans-Neptunian objects suggests they may belong to four different populations.“Machine-learning techniques show that the known ETNOs may belong to four different populations.”
   2. Unchecked“Results from the analysis of the distribution of nodal distances show that 41 per cent of the known ETNOs have at least one mutual nodal distance smaller than 1.45 au (1st percentile of the distribution), perhaps hinting at past interactions.”
   3. UncheckedKnown extreme trans-Neptunian objects show a strongly significant imbalance between pairs with small ascending and small descending nodal distances.“In addition, the known ETNOs exhibit a highly statistically significant asymmetry between the distributions of object pairs with small ascending and descending nodal distances that might be indicative of a response to external perturbations.”