Napier, KJ;
Gerdes, DW;
Lin, HW;
Hamilton, SJ;
Bernstein, GM;
Bernardinelli, PH;
Abbott, TMC;
... Wilkinson, RD; + view all
(2021)
No evidence for orbital clustering in the extreme trans-Neptunian objects.
Planetary Science Journal
, 2
(2)
10.3847/PSJ/abe53e.
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Abstract
The apparent clustering in longitude of perihelion ϖ and ascending node Ω of extreme trans-Neptunian objects (ETNOs) has been attributed to the gravitational effects of an unseen 5–10 Earth-mass planet in the outer solar system. To investigate how selection bias may contribute to this clustering, we consider 14 ETNOs discovered by the Dark Energy Survey, the Outer Solar System Origins Survey, and the survey of Sheppard and Trujillo. Using each survey's published pointing history, depth, and TNO tracking selections, we calculate the joint probability that these objects are consistent with an underlying parent population with uniform distributions in ϖ and Ω. We find that the mean scaled longitude of perihelion and orbital poles of the detected ETNOs are consistent with a uniform population at a level between 17% and 94% and thus conclude that this sample provides no evidence for angular clustering.
| Type: | Article |
|---|---|
| Title: | No evidence for orbital clustering in the extreme trans-Neptunian objects |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3847/PSJ/abe53e |
| Publisher version: | https://doi.org/10.3847/PSJ/abe53e |
| Language: | English |
| Additional information: | © 2021. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10134772 |
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