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Title    Study of ETNOs Supports Planet Nine's Existence
Date    Friday July 14 2017, @11:08PM
Author    mrpg
Topic   
from the 9 dept.
https://soylentnews.org/article.pl?sid=17/07/14/217203

takyon writes:

A new study of the orbits of extreme trans-Neptunian objects has supported the existence of Planet Nine, just weeks after the Outer Solar System Origins Survey cast doubt on the hypothetical object:

Two astronomers from the Complutense University of Madrid in Spain studied 22 "extreme" TNOs (ETNOs), which orbit the sun at an average distance of at least 150 AU and never get closer than Neptune. (Neptune lies about 30 AU from the sun and orbits on a roughly circular path.) Specifically, the duo analyzed the ETNOs' "nodes," the two points at which the objects cross the plane of the solar system. (Distant bodies such as ETNOs tend not to lie in the same plane as the sun and the solar system's eight officially recognized planets.)

The researchers found that the objects' nodes generally aggregate at certain distances from the sun (as do those of 24 "extreme Centaurs," very distant objects with some characteristics of asteroids and others of comets). In addition, they discovered a correlation between the nodes' positions and an orbital parameter known as inclination.

The new results back the Planet Nine hypothesis, said lead author Carlos de la Fuente Marcos. "Assuming that the ETNOs are dynamically similar to the comets that interact with Jupiter, we interpret these results as signs of the presence of a planet that is actively interacting with them in a range of distances from 300 to 400 AU," he told Spain's Information and Scientific News Service, which is known by its Spanish acronym, SINC. "We believe that what we are seeing here cannot be attributed to the presence of observational bias."

Also at EarthSky.

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? (DOI: 10.1093/mnrasl/slx106) (DX)


Original Submission

Links

  1. "takyon" - https://soylentnews.org/~takyon/
  2. "extreme trans-Neptunian objects" - https://en.wikipedia.org/wiki/Trans-Neptunian_object
  3. "supported the existence of Planet Nine" - https://www.space.com/37477-planet-nine-existence-new-evidence.html
  4. "cast doubt on the hypothetical object" - https://soylentnews.org/article.pl?sid=17/06/27/0217207
  5. "told Spain's Information and Scientific News Service" - http://www.agenciasinc.es/en/News/New-evidence-in-support-of-the-Planet-Nine-hypothesis
  6. "EarthSky" - http://earthsky.org/space/planet-9-analysis-madrid-extreme-trans-neptunian-objects
  7. "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?" - https://academic.oup.com/mnrasl/article-abstract/doi/10.1093/mnrasl/slx106/3892345/Evidence-for-a-possible-bimodal-distribution-of
  8. "DX" - http://dx.doi.org/10.1093/mnrasl/slx106
  9. "Original Submission" - https://soylentnews.org/submit.pl?op=viewsub&subid=21245

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printed from SoylentNews, Study of ETNOs Supports Planet Nine's Existence on 2024-03-28 16:25:51