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Alpha Herculis

Star system
Alpha Herculis, also designated 64 Herculis, is a multiple star system in the constellation of Hercules. Appearing as a single point of light to the naked eye, it is resolvable into a number of components through a telescope. Wikipedia
Magnitude: -2.3
Constellation: Hercules
Distance to Earth: 358.8 light years
Colors: red
Radius: 284 ± 60, 264–303 R
Absolute magnitude (MV): −2.3 + 1.8 + 2.8
Age: 0.41–1.25 Gyr