HD 165189 and HD 165190

HD 165189 and HD 165190 are components of a visual binary star system located 143 light years away in the southern constellation of Corona Australis. It is visible to the naked eye with the primary having an apparent visual magnitude of $$. The system is a member of the Beta Pictoris Moving Group.

The pair orbit each other with a period of 450 years and a large eccentricity of 0.650. They have a projected separation of $$. Both components are A-type main-sequence stars; the primary has a stellar classification of A6 V while the secondary is A7 V. They have similar masses of 1.59 and 1.58 times the mass of the Sun, respectively.