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A orange-red giant which changes slowly and irregularly its size and so its luminosity.
Every now and then it shows violent eruptions which can't be explained at this time.

Constellation: Pegasus
Age: 15 million years
Distance: 673 light-years
Spectral class: K2
Visual magnitude: 2.39
Luminosity: 6700 * Sun
Mass: 10 * Sun
Diameter: 661 * Sun

Back: List of big and giant stars
Enif is the bright star at the right below the middle.
Photo T. Credner & S. Kohle,

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