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The stars with the most confirmed planets are the Sun (the Solar System's star) and Kepler-90, with 8 confirmed planets each, followed by TRAPPIST-1 with 7 planets. The 1007 multiplanetary systems are listed below according to the star's distance from Earth. Proxima Centauri, the closest star to the Solar System, has three planets (b, c and d).
The most common kinds of binary system are binary stars and binary asteroids, but brown dwarfs, planets, neutron stars, black holes and galaxies can also form binaries. A multiple system is similar but consists of three or more objects, for example trinary stars and trinary asteroids .
An eclipsing binary star is a binary star system in which the orbital plane of the two stars lies so nearly in the line of sight of the observer that the components undergo mutual eclipses. [20] In the case where the binary is also a spectroscopic binary and the parallax of the system is known, the binary is quite valuable for stellar analysis.
Although up to a third of the star systems in the Milky Way are binary, [1] double planets are expected to be much rarer given the typical planet to satellite mass ratio is around 1:10000, they are influenced heavily by the gravitational pull of the parent star [2] and according to the giant-impact hypothesis are gravitationally stable only ...
In contrast, circumstellar planets in a binary system have stable orbits around one of the two stars, [1] closer in than the orbital distance of the other star (see Habitability of binary star systems). Studies in 2013 showed that there is a strong hint that a circumbinary planet and its stars originate from a single disk. [2]
Circumbinary planet; Colliding-wind binary; Common envelope binary; Contact binary; ... Apep (star system) AR Scorpii; AT Microscopii; Atlas (star) B. BD-07 436; BD+ ...
Double planet: Also known as a binary planet. Two planetary-mass objects orbiting each other. OGLE-2017-BLG-0380Lb [2] Eccentric Jupiter: A gas giant that orbits its star in an eccentric orbit. HD 80606 b, HD 20782 b: Exoplanet: A planet that does not orbit the Sun, but a different star, a stellar remnant, or a brown dwarf. Proxima Centauri b ...
Has two known planets List of nearest B-type stars. This is a list of B-type stars within 200 light years. ... Part of a binary star system.