A Fruit of a Different Kind: 2015 BP519 as an Outlier among the Extreme Trans-Neptunian Objects
arXiv:1809.02571 · doi:10.3847/2515-5172/aadfec
Abstract
A number of intriguing patterns have been identified in the distributions of the orbital elements of the known extreme trans-Neptunian objects or ETNOs --those with semimajor axis greater than 150 au and perihelion distance greater than 30 au. The announcement of the discovery of 2015 BP519, also known as Caju, has been hailed by some as a consistent piece of robust evidence for the existence of a yet-to-be-discovered massive planet far beyond the trans-Neptunian belt. In this Note, we use the latest data available to provide evidence against 2015 BP519 having followed the same dynamical pathway that placed other ETNOs where they are now. As an statistical outlier within the 29 known ETNOs, 2015 BP519 cannot be used as a reference to further support the trends perhaps present for other ETNOs. Asteroid 2015 BP519 represents a case of extreme dynamical anticorrelation within the ETNO orbital realm and the value of the distance to its descending node, nearly 700 au from the Sun, is the largest of any known ETNO.
4 pages, 1 figure. Accepted for publication in Research Notes of the AAS
References in corpus (8)
- Evidence for a Distant Giant Planet in the Solar System
- OSSOS VI. Striking Biases in the detection of large semimajor axis Trans-Neptunian Objects
- Extreme trans-Neptunian objects and the Kozai mechanism: signalling the presence of trans-Plutonian planets
- Discovery and Dynamical Analysis of an Extreme Trans-Neptunian Object with a High Orbital Inclination
- Finding Planet Nine: apsidal anti-alignment Monte Carlo results
- Visible spectra of (474640) 2004 VN112-2013 RF98 with OSIRIS at the 10.4 m GTC: evidence for binary dissociation near aphelion among the extreme trans-Neptunian objects
- Evidence for a possible bimodal distribution of the nodal distances of the extreme trans-Neptunian objects: avoiding a trans-Plutonian planet or just plain bias?
- Binary stripping as a plausible origin of correlated pairs of extreme trans-Neptunian objects