Magnitude 5.39 Apparent magnitude (V) 5.39 | ||
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51 Aquilae (abbreviated 51 Aql) is a star in the equatorial constellation of Aquila. 51 Aquilae is its Flamsteed designation. It has an apparent visual magnitude of 5.39, which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 35.88 mas, the distance to this star is around 90.9 light-years (27.9 parsecs).
This is an F-type main sequence star with a stellar classification of F5 V Fe-1 CH-0.7; where the 'Fe-1' and 'CH-0.7' represent abundance deficiencies of iron and the molecule CN, respectively. It is about 1.6 billion years old and is spinning relatively quickly with a projected rotational velocity of 77.5 km/s. The outer atmosphere has an effective temperature of 6,812 K, giving it the yellow-white hue characteristic of an F-type star.