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Alpha Lupi

The blue star is at the end of its main sequence stadium or is already done with it. Alpha Lupi, also known as Kakkab, is pulsating slightly with multiple periods.

Constellation: Lupus
Age: 20 million years
Distance: 548 light-years
Spectral class: B1.5
Visual magnitude: 2.28
Luminosity: 18 000 * Sun
Mass: 10 - 11 * Sun
Diameter: 10 * Sun

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Photo: ESO Online Digitized Sky Survey
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