Question

what is rogue objects and is there any rogue planet in our solar system and what is antistar? Please tell Wright answer​

Answer 1

Explanation:

rogue planet (also termed an interstellar, nomad, free-floating, unbound, orphan, wandering, starless, or sunless planet) is a planetary-mass object that does not orbit a star. Such objects have been ejected from the planetary system in which they formed or have never been gravitationally bound to any star or brown dwarf.[1][2][3] The Milky Way alone may have billions to trillions of rogue planets, a range which the upcoming Nancy Grace Roman Space Telescope will likely be able to narrow down.[4][5]

File:Artist's impression of the free-floating planet CFBDSIR J214947.2-040308.9.ogvPlay media

This video shows an artist's impression of the free-floating planet CFBDSIR J214947.2-040308.9.

Some planetary-mass objects may have formed in a similar way to stars, and the International Astronomical Union has proposed that such objects be called sub-brown dwarfs.[6] A possible example is Cha 110913-773444, which may have been ejected and become a rogue planet, or formed on its own to become a sub-brown dwarf.[7]

Astronomers have used the Herschel Space Observatory and the Very Large Telescope to observe a very young free-floating planetary-mass object, OTS 44, and demonstrate that the processes characterizing the canonical star-like mode of formation apply to isolated objects down to a few Jupiter masses. Herschel far-infrared observations have shown that OTS 44 is surrounded by a disk of at least 10 Earth masses and thus could eventually form a mini planetary system.[8] Spectroscopic observations of OTS 44 with the SINFONI spectrograph at the Very Large Telescope have revealed that the disk is actively accreting matter, similarly to the disks of young stars.[8] In December 2013, a candidate exomoon of a rogue planet was announced.[9]

In October 2020, OGLE-2016-BLG-1928, an Earth-mass rogue planet, was discovered in the Milky Way.[10][11][12]