Mu Aquilae

Mu Aquilae (μ Aql, μ Aquilae) is the Bayer designation for a star in the equatorial constellation of Aquila. With an apparent visual magnitude of 4.45, it is visible to the naked eye. The measured annual parallax shift of 30.31 mas, which is equivalent to a distance of 107.6 light-years (33.0 parsecs) from Earth.

The stellar classification of Mu Aquilae is K3 III, indicating that this is an evolved giant star. It belongs to a sub-category called the red clump, indicating that it is generating energy through the fusion of helium at its core. Compared to the Sun, it has 92% of the mass but has expanded to eight times the size. This inflated outer envelope has an effective temperature of 4,467 K and is radiating 24.5 times the Sun's luminosity. At this heat, Mu Aquilae glows with the orange hue of a K-type star.