The Influence of Planet 9 on the Orbits of Distant TNOs: The Case for a Low Perihelion Planet

Abstract

The hypothesis of an additional planet in the outer Solar System has gained new support as a result of the confinement noted in the angular orbital elements of distant trans-Neptunian objects. Orbital parameters proposed for the external perturber suggest semimajor axes between 500 and 1000 au, perihelion distances between 200 and 400 au for masses between 10 and 20 $M_{\oplus }$. In this paper we study the possibility that lower perihelion distances for the additional planet can lead to angular confinements as observed in the population of objects with semimajor axes greater than 250 au and perihelion distances higher than 40 au. We performed numerical integrations of a set of particles subjected to the influence of the known planets and the putative perturber during the age of the Solar System and compared our outputs with the observed population through a statistical analysis. Our investigations showed that lower perihelion distances from the outer planet usually lead to more substantial confinements than higher ones, while retaining the Classical Kuiper Belt as well as the ratio of the number of detached with perihelion distances higher than 42 au to scattering objects in the range of semimajor axes from 100 au to 200 au.

References in corpus (28)

• Evidence for a Distant Giant Planet in the Solar System
• Discovery of a candidate inner Oort cloud planetoid
• The Absolute Magnitude Distribution of Kuiper Belt Objects
• Scenarios for the Origin of the Orbits of the Trans-Neptunian Objects 2000 CR105 and 2003 VB12
• Stellar encounters as the origin of distant solar system objects in highly eccentric orbits
• Observational constraints on the orbit and location of Planet Nine in the outer solar system
• Reassessing the formation of the inner Oort cloud in an embedded star cluster
• Was The Sun Born In A Massive Cluster?
• The Luminosity Function of the Hot and Cold Kuiper belt Populations
• Constraints on the location of a possible 9th planet derived from the Cassini data
• Generation of Highly Inclined Trans-Neptunian Objects by Planet Nine
• A Possible Divot in the Size Distribution of the Kuiper Belt's Scattering Objects
• Solar Obliquity Induced by Planet Nine
• Interaction Cross Sections and Survival Rates for Proposed Solar System Member Planet Nine
• Corralling a distant planet with extreme resonant Kuiper belt objects
• Is there an exoplanet in the Solar System?
• Dynamical Evolution Induced by Planet Nine
• The inclination of the planetary system relative to the solar equator may be explained by the presence of Planet 9
• Constraints on Planet Nine's Orbit and Sky Position within a Framework of Mean Motion Resonances
• Observational Constraints on Planet Nine: Cassini Range Observations
• Checking the Compatibility of the Cold Kuiper Belt with a Planetary Instability Migration Model
• Making Planet Nine: A Scattered Giant in the Outer Solar System
• Was Planet 9 captured in the Sun's natal star-forming region?
• Observational Constraints on Planet Nine: Astrometry of Pluto and Other Trans-Neptunian Objects
• Solar Obliquity Induced by Planet Nine: Simple Calculation
• The Generation of the Distant Kuiper Belt by Planet Nine from an Initially Broad Perihelion Distribution
• Dynamical formation of detached trans-Neptunian objects close to the 2:5 and 1:3 mean motion resonances with Neptune
• Circularizing Planet Nine through dynamical friction with an extended, cold planetesimal belt

Cited by in corpus (4)

• The Planet Nine Hypothesis
• A search for Planet 9 in the IRAS data
• The Resonance Hopping Effect in the Neptune-Planet Nine System
• Machine Learning for Searching the Dark Energy Survey for Trans-Neptunian Objects