The Orbit of Planet Nine

@article{Brown2021TheOO,
  title={The Orbit of Planet Nine},
  author={Michael E. Brown and Konstantin Batygin},
  journal={The Astronomical Journal},
  year={2021},
  volume={162}
}
The existence of a giant planet beyond Neptune—referred to as Planet Nine (P9)—has been inferred from the clustering of longitude of perihelion and pole position of distant eccentric Kuiper belt objects (KBOs). After updating calculations of observational biases, we find that the clustering remains significant at the 99.6% confidence level. We thus use these observations to determine orbital elements of P9. A suite of numerical simulations shows that the orbital distribution of the distant KBOs… 

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References

SHOWING 1-10 OF 33 REFERENCES

Constraints on Planet Nine’s Orbit and Sky Position within a Framework of Mean-motion Resonances

A number of authors have proposed that the statistically significant orbital alignment of the most distant Kuiper Belt Objects (KBOs) is evidence of an as-yet undetected planet in the outer solar

OBSERVATIONAL CONSTRAINTS ON THE ORBIT AND LOCATION OF PLANET NINE IN THE OUTER SOLAR SYSTEM

We use an extensive suite of numerical simulations to constrain the mass and orbit of Planet Nine, the recently proposed perturber in a distant eccentric orbit in the outer solar system. We compare

DENSITY AND ECCENTRICITY OF KEPLER PLANETS

We analyze the transit timing variations (TTV) obtained by the Kepler mission for 22 sub-Jovian planet pairs (19 published, 3 new) that lie close to mean motion resonances. We find that the TTV

OBSERVATIONAL SIGNATURES OF A MASSIVE DISTANT PLANET ON THE SCATTERING DISK

The orbital element distribution of trans-Neptunian objects (TNOs) with large pericenters has been suggested to be influenced by the presence of an undetected, large planet at >200 au from the Sun.

Orbital clustering of distant Kuiper Belt Objects by hypothetical Planet 9. Secular or resonant

Statistical analysis of the orbits of distant Kuiper Belt Objects (KBOs) have led to suggest that an additional planet should reside in the Solar System. According to recent models, the secular

EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM

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

The planet nine hypothesis

Orbital Clustering in the Distant Solar System

The most distant Kuiper Belt objects (KBOs) appear to be clustered in longitude of perihelion and in orbital pole position. To date, the only two suggestions for the cause of these apparent

Injection of Inner Oort Cloud Objects into the Distant Kuiper Belt by Planet Nine

The outer solar system exhibits an anomalous pattern of orbital clustering, characterized by an approximate alignment of the apsidal lines and angular momentum vectors of distant, long-term stable

Feasibility of a Resonance-based Planet Nine Search

It has been proposed that mean-motion resonances (MMRs) between Planet Nine and distant objects of the scattered disk might inform the semimajor axis and instantaneous position of Planet Nine. Within