Magnitude 5.889 Apparent magnitude (V) 5.889 | Constellation Aquila | |
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Upsilon Aquilae (υ Aql, υ Aquilae) is the Bayer designation for a star in the equatorial constellation of Aquila. With an apparent visual magnitude of +5.91 it is a faint star but visible to the naked eye from suburban skies. It has an annual parallax shift of 18.65 milliarcsecond, indicating a distance of around 175 light-years (54 parsecs).
Upsilon Aquilae is a subgiant star with a stellar classification of A3 IV. The outer atmosphere is radiating energy into space at an effective temperature of 7,906 K, which gives it the white-hot glow of an A-type star. It is spinning relatively quickly with a projected rotational velocity of 42 km/s.
References
Upsilon Aquilae Wikipedia(Text) CC BY-SA