[10] There are two components: Theta Coronae Borealis A with an apparent magnitude of about 4.2, while Theta Coronae Borealis B lies around 1 arcsecond distant and has an apparent magnitude of 6.29.

The system is located around 375 light-years from Earth, as estimated from its parallax of 8.69 milliarcseconds.

[6] Both stars will cool and expand once their core hydrogen is exhausted, becoming red giants.

The brighter component, Theta Coronae Borealis A, is a blue-white star that spins extremely rapidly—at a rate of around 393 km per second.

The cause for this is unknown, but thought possibly due to ejection of dust that obscured the star's light.