45 Aquilae

45 Aquilae (abbreviated 45 Aql) is a triple star system in the equatorial constellation of Aquila. 45 Aquilae is its Flamsteed designation. It is located 350 light-years (110 parsecs) away from Earth, give or take a 30 light-year margin of error, and has an apparent visual magnitude of 5.7.

Based upon a stellar classification of A3 IV, the primary component of this system is a subgiant star that is in the process of evolving away from the main sequence. It has an orbiting companion with a period of 20.31 years and an eccentricity of 0.054. At an angular separation of 42.2 arcseconds from this pair is a 12.7 magnitude tertiary companion.