Multiple star system

Multiple star systems are a form of the standard star system model which contain more than one active star.

Binary star system
A binary star system is 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
 * Beta Aurigae
 * Beta Lyrae
 * Foster-D'Angelo
 * Groombridge 34
 * Izar
 * Kabrel
 * Kavis Alpha sector binary
 * Kazis
 * Natori
 * Pallas 14
 * Procyon
 * Sirius
 * Talos
 * Vandor
 * An unnamed binary star system (2152)
 * An unnamed binary star system at edge of Federation space
 * An unnamed binary star system in Sector 22139
 * An uncharted binary star system in the Gamma Quadrant which included a penal moon.
 * 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 uncharted binary star system with a lone Class M planet.

Trinary star system
A trinary star system is a star system made up of three stars. Two or three of the stars may orbit around a common center of gravity, also known as their barycenter. Often, trinary stars consist of a binary pair that orbit each other in relatively close proximity with a third star that is further away, in a more "planetary" style orbit.

In 2152, radiation from a trinary star system caused the crew of to obsess over insignificant details and tasks. 

In 2372, Jadzia Dax asked for Benjamin Sisko's permission to send a science team to investigate a trinary star system. Sisko told her the team could take the USS Rubicon. 

In 2373, Commander Chakotay ordered Ensign Harry Kim to mark the coordinates of a trinary star system in the Delta Quadrant, as he thought it would make a good reference point for the sector the USS Voyager was passing through. 

List of trinary star systems

 * 40 Eridani A
 * Alnitak (Zeta Orionis)
 * Alpha Centauri
 * Idran system
 * M24 Alpha
 * Rura Penthe
 * Talax
 * An unnamed trinary system with a black hole

Quaternary star system
A quaternary star system is a star system made up of four stars.

List of quaternary star systems

 * Capella
 * PH-1 (Kepler-64)