From the total of stars known to have exoplanets (as of ), there are a total of known multiplanetary systems, or stars with at least two confirmed planets, beyond the Solar System. This list includes systems with at least three confirmed planets, or two confirmed planets where additional candidates have been proposed. The stars with the most confirmed planets are the Sun (the Solar System's star) and Kepler-90, with eight confirmed planets each, followed by TRAPPIST-1 with seven planets.
The multiplanetary systems are listed below according to the star's distance from Earth. Proxima Centauri, the closest star to the Solar System, has at least two planets (the confirmed b, d and the disputed c). The nearest system with four or more confirmed planets is Barnard Star, with four known. The farthest confirmed system with two or more planets is OGLE-2012-BLG-0026L, at away.
The table below contains information about the coordinates, spectral and physical properties, and the number of confirmed (unconfirmed) planets for systems with at least two planets and one not confirmed. The two most important stellar properties are mass and metallicity because they determine how these planetary systems form. Systems with higher mass and metallicity tend to have more planets and more massive planets. However, although low metallicity stars tend to have fewer massive planets, particularly hot-Jupiters, they also tend to have a larger number of close-in planets, orbiting at less than one AU.
Multiplanetary systems
Color indicates number of planets2 (x)345678
Stars orbited by both planets and brown dwarfs These are stars orbited by objects on both sides of the ~13 Jupiter mass dividing line.
54 Piscium (HD 3651) HD 168443 HD 4113 A Epsilon Indi A HD 82943 Pi Mensae (TOI-144) HD 38529 HD 245134 KMT-2020-BLG-0414L KMT-2024-BLG-0404L
See also
References