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Beta Crucis, abbreviated Becrux, also known as Mimosa, is a double star of a Beta Cephei variable (A) and a smaller partner (B) of unknown nature.

Constellation: Crucis
Age: 10 million years
Distance: 353 light-years
Space between Becrux A and B: 8 AU
Orbit period of Becrux A and B: 4 years
Spectral class: B0.5
Visual magnitude: 1.25
Luminosity: 34 000 * Sun
Mass: 14 * Sun
Diameter: 8.1 * Sun

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    Becrux, Mimosa
Becrux in front of the background of the Milky Way.
Photo: ESO Online Digitized Sky Survey

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