Nu Aquilae

Nu Aquilae, Latinized from ν Aquilae, is the Bayer designation for a double star in the constellation of Aquila that lies close to the celestial equator. It has an apparent visual magnitude of 4.72 and so is visible to the naked eye. Based upon an annual parallax shift of only $9,848$ (with a 10% margin of error), it is believed to lie approximately 3700 ly from Earth. The variable star NU Aquilae has a similar-looking designation but is a separate and unrelated object.

The spectrum of ν Aql A matches a stellar classification of F3, with the luminosity class of Ib indicating this is a supergiant. This is a massive star, with approximately 12.5 times the mass of the sun, and it spans 108 times the Sun's size. It is only 15 million years old and is radiating around 9,800 times the luminosity of the Sun. The outer atmosphere has an effective temperature of 5,500 K and it has the yellow-white hue of an F-type star.

ν Aql B is a ninth magnitude star 201 arc-seconds distant. Little is known about it except an approximate spectral classification.