First transneptunian object in polar resonance with Neptune
arXiv:1708.00346 · doi:10.1093/mnrasl/slx125
Abstract
Capture in mean motion resonance has been observed in the Solar System for small objects with prograde as well as retrograde orbits of moderate inclinations. However, no example of an object with a nearly polar orbit was known to be in resonance with a planet. In this Letter, we report that the nearly-polar transneptunian object (471325), nicknamed Niku, is in a 7:9 resonance with Neptune, with a mean lifetime in resonance of 16 +- 11 million years. While entrance and exit in the 7:9 resonance is caused by close encounters with Neptune the resonant configuration provides a temporary protection mechanism against disruptive close encounters with this planet. The other nearly polar transneptunian objects do not seem to be in resonance with the planets with the possible exception of 2008 KV42, also known as Drac, that has a small chance of being in the 8:13 resonance with Neptune.
arXiv comment5 pages, accepted for publication in MNRAS-Letters
References in corpus (11)
- The Resonant Transneptunian Populations
- The Phase Space Structure Near Neptune Resonances in the Kuiper Belt
- Retrograde resonance in the planar three-body problem
- Generation of Highly Inclined Trans-Neptunian Objects by Planet Nine
- Asteroids in retrograde resonance with Jupiter and Saturn
- 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
- Resonance capture at arbitrary inclination: II. Effect of the radial drift rate
- OSSOS: IV. Discovery of a dwarf planet candidate in the 9:2 resonance with Neptune
- Coorbital capture at arbitrary inclination
- The disturbing function for polar Centaurs and transneptunian objects
Cited by in corpus (15)
- An interstellar origin for Jupiter's retrograde co-orbital asteroid
- Three dimensional structure of mean motion resonances beyond Neptune
- Strength, stability and three dimensional structure of mean motion resonances in the Solar System
- An interstellar origin for high-inclination Centaurs
- Resonance libration and width at arbitrary inclination
- Centaurs potentially in retrograde co-orbit resonance with Saturn
- The disturbing function for asteroids with arbitrary inclinations
- Orbital stability in the Solar System for arbitrary inclinations and eccentricities: planetary perturbations versus resonances
- Small solar system objects on highly inclined orbits: Surface colours and lifetimes
- Impact of non-gravitational effects on chaotic properties of retrograde orbits
- Dynamical structures of retrograde resonances: analytical and numerical studies
- An estimate of resident time of the Oort Cloud new comets in planetary region
- On the interstellar origin of high-inclination Centaurs
- Inclination pathways of planet-crossing asteroids
- A minor planet in an outer resonance with Uranus