The solar system consists of our star, the sun and everything that is bound by gravity; The Planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptunus, together with dwarf planets such as Pluto, dozens of moons and millions of asteroids and comets, writes Universetoday.com.
The planets run the sun in elliptical paths, where the inner four rocky terrestrial worlds are and the outer four are gas and ice giants that are many times larger than the earth.
Our fascination for detecting more planets in the solar system has not revealed strong candidates so far. Because Pluto was classified for many years as the 9th planet, the hunt for planet X was. With the relegation of Pluto in 2006, the idea of Planet Nine was first presented in 2016 by astronomers Batygin and Brown.
Its existence is derived from unusual orbital clustering of various Trans-Neptunian objects, suggesting that they are influenced by a large, unseen planetary body. Despite extensive searches with the help of powerful telescopes, Planet Nine has remained theoretically because direct observation has proved elusive.
In a study led by Terry Long Phan and published in Cambridge University Press, the team searches nine candidates for planet by using two distant all-sky surveys, IRAs and Akari, whose 23-year divorce detection of the expected orbital movement makes Planet Nine possible (~ 3 Sund).
The search uses the Akari FAR-infrared Monthly unconfirmed Bronglist (Akari-MUSL), which is better suited for identifying vague, moving objects than the standard Akari Bright Source catalog.
Researchers estimate the expected flux and movement of Planet Nine based on supposed mass, distance and temperature, and then positional and flux criteria applied to match sources between IRAs and Akari. They identified 13 candidate pairs with corner partitions that correspond to heliocentric distances of 500 – 700 au and masses of 7-17 earth masses.
After a rigorous analysis and selection process, including visual inspection of images, the team identified a strong candidate couple, in which the IRAS and Akari sources showed the expected corner separation (42 ′ – 69.6 ′) and not the same position in each survey was detected.
The Akari detection card confirmed the consistency of the candidate with a slowly moving object, with two detections on one date and not six months earlier.
Only IRAs and Akari data are insufficient to determine a precise job, so there must be follow-up observations with Decam, which can detect vague moving objects within an hour after exposure, are proposed to confirm the candidate and determine the job in full, to understand the evolution and structure of the solar system.
Although the identification of a promising candidate is an exciting step forward, the confirmation will require further observations and continuous cooperation in the astronomical community. If Planet Nine is ultimately detected, this would be a monumental addition to our understanding of the solar system.
