Mu Coronae Borealis

It is faintly visible to the naked eye, having an apparent visual magnitude of 5.12.

[2] Based upon an annual parallax shift of 5.27 mas,[1] it is located roughly 620 light years from the Sun.

This is an evolved red giant star with a stellar classification of M1.5 IIIb.

[3] It is currently on the asymptotic giant branch[9] and is a variable star of uncertain type, showing a change in brightness with an amplitude of 0.0147 magnitude and a frequency of 0.02455 cycles per day, or 40.7 days/cycle.

[10] On average, it is radiating 932 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,889 K.[6]