An interstellar origin for Jupiter's retrograde co-orbital asteroid

Abstract

Asteroid (514107) 2015 BZ509 was discovered recently in Jupiter's co-orbital region with a retrograde motion around the Sun. The known chaotic dynamics of the outer Solar System have so far precluded the identification of its origin. Here, we perform a high-resolution statistical search for stable orbits and show that asteroid (514107) 2015 BZ509 has been in its current orbital state since the formation of the Solar System. This result indicates that (514107) 2015 BZ509 was captured from the interstellar medium 4.5 billion years in the past as planet formation models cannot produce such a primordial large-inclination orbit with the planets on nearly-coplanar orbits interacting with a coplanar debris disk that must produce the low-inclination small-body reservoirs of the Solar System such as the asteroid and Kuiper belts. This result also implies that more extrasolar asteroids are currently present in the Solar System on nearly-polar orbits.

Published in Monthly Notices of the Royal Astronomical Society: Letters

References in corpus (8)

• The formation of the solar system
• Discovery of A New Retrograde Trans-Neptunian Object: Hint of A Common Orbital Plane for Low Semi-Major Axis, High Inclination TNOs and Centaurs
• Resonance capture at arbitrary inclination
• The Trojan Color Conundrum
• First transneptunian object in polar resonance with Neptune
• The dynamical matter density in the solar neighbourhood inferred from Gaia DR1
• Resonance capture at arbitrary inclination: II. Effect of the radial drift rate
• The disturbing function for polar Centaurs and transneptunian objects

Cited by in corpus (24)

• Galactic Panspermia
• No evidence for interstellar planetesimals trapped in the Solar System
• Identifying Interstellar Objects Trapped in the Solar System through Their Orbital Parameters
• Periodic orbits of the retrograde coorbital problem
• Implications of Captured Interstellar Objects for Panspermia and Extraterrestrial Life
• An interstellar origin for high-inclination Centaurs
• Capture of interstellar objects: a source of long-period comets
• Interstellar Now! Missions to and Sample Returns from Nearby Interstellar Objects
• On quasi-satellite periodic motion in asteroid and planetary dynamics
• Kozai-Lidov Mechanism inside Retrograde Mean Motion Resonances
• Resonance libration and width at arbitrary inclination
• A Deep and Wide Twilight Survey for Asteroids Interior to Earth and Venus
• Transient Jupiter Co-orbitals from Solar System Sources
• A study of the 1/2 retrograde resonance: Periodic orbits and resonant capture
• Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto): dislodged from the Oort Cloud or coming from interstellar space?
• On the Instability of Saturn's Hypothetical Retrograde Co-orbitals
• On the Dynamical Origins of Retrograde Jupiter Trojans and their Connection to High-Inclination TNOs
• Impact of non-gravitational effects on chaotic properties of retrograde orbits
• Orbit injection of planet-crossing asteroids
• An estimate of resident time of the Oort Cloud new comets in planetary region
• Disruption of exo-asteroids around white dwarfs and the release of dust particles in debris rings in co-orbital motion
• On the interstellar origin of high-inclination Centaurs
• Galactic tides in the Solar System within a non-axisymmetric Milky Way model adjusted to Gaia data
• Inclination pathways of planet-crossing asteroids