The combined visual magnitude is 5.3 and the system lies 74 light years from Earth.

A third component, while being separated by 635″ (translating to a minimum distance of 14,000 au), has a similar parallax and proper motion to the brighter stars and is physically associated.

It is known in the Washington Double Star Catalog (WDS), a compilation of observations of double stars, as component E,[22] but it is usually called Sigma Coronae Borealis C.[15] Sigma1 Corona Borealis is a G-type main-sequence star like the Sun, and has similar parameters: a mass roughly equal to that of the Sun, and an effective temperature of 5950 K.[15] A visual orbit has been calculated, with a period of about 730 years and a high eccentricity of 0.72.

[15] This tiny separation of only 0.0279 au[15] has allowed the two stars to exert tidal forces on each other, leading to synchronization of their rotation.

[15] σ Coronae Borealis C, also known as HIP 79551, appears as a red dwarf with a spectral type of M2.5V.