Dsiban
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Psi1 Draconis (ψ1 Draconis, abbreviated Psi1 Dra, ψ1 Dra), also designated 31 Draconis, is a triple star system in the northern constellation of Draco. The system is fairly close, and is located about 75 light-years (23 parsecs) from the Sun, based on its parallax.
Psi1 Draconis was considered a binary star consisting of an F-type subgiant and an F-type main-sequence star, designated Psi1 Draconis A (officially named Dziban , from the traditional name of the system) and Psi1 Draconis B, respectively. In 2015, Psi1 Draconis A was itself found to be a double-lined spectroscopic binary, making the system a triple. The companion to Psi1 Draconis A was designated Psi1 Draconis C by its discoverers.
Also in 2015, Psi1 Draconis B was discovered to be orbited by an exoplanet, designated Psi1 Draconis Bb.
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