Beta Aquilae is a triple star system in the equatorial constellation of Aquila. Its name is a Bayer designation that is Latinized from β Aquilae, and abbreviated Beta Aql or β Aql. This system is visible to the naked eye as a point-like source with an apparent visual magnitude of 3.87. Based on parallax measurements, it is located at a distance of 44.4 light-years. It is drifting closer to the Sun with a radial velocity of −40 km/s, and is predicted to approach to within 27 light-years (8.4 pc) in roughly 207,000 years. Its two visible components are designated Beta Aquilae A and B. The former is formally named Alshain , the traditional name for the system.

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