Binary star system
A binary star system was a star system that has two stars at its center. The two stars orbit each other around their common center of gravity, also known as their barycenter. (; ; ; )

List of binary star systems
61 Cygni
Alastria system

Beta Aurigae 
Beta Lyrae
Beta Penthe
Groombridge 34
Izar 
Kabrel 
Kavis Alpha sector binary
Kazis

Natori
Pallas 14
Porathia
Procyon 

Rigel
Sirius 
Talos
Vandor
An unnamed binary star system visited by  in 2152. ()
 An unnamed binary star system containing Tamaal and at least three other planets. ()
An unnamed binary star system at edge of Federation space, the site of the Battle of the Binary Stars. ()
An uncharted binary star system with a lone class M planet. ()
An unnamed binary star system in Sector 22139 ()
An uncharted binary star system in the Gamma Quadrant which included a penal moon. ()
An unnamed binary star system containing the planet . ()
An unnamed binary pulsar in the Delta Quadrant. ()
An unnamed binary system containing a blue star and a black hole, visited by the  around 2380. ( opening credits)
An unnamed binary star system in the Qiris sector, containing the planet Vashti. ()

External links

de:Binäres Sternensystem
ja:連星系
Celestial objects