Acrux B

Alpha2 Crucis


Distance (Light Years) 321 ± 21
Apparent Magnitude 0.77(combined)
Color (B-V)-0.26

Description of the Star

Acrux B is a blue B1V main sequence star larger and brighter than our sun. The star is about 0.39 magnitudes dimmer than the giant A component, giving it an apparent magnitude of 1.73 according to the Millenium Star Atlas. The spectral type implies a temperature of about 26000 K, a diameter 6.7 times that of the sun and a luminosity 11000 times that of the sun.

Other Designations For This Star

Hipparcos Identifier (HIP Number)

Harvard Revised (HR Number)


Henry Draper Catalog (HD Number)


Bonner Durchmusterung (BD Number)

CP-62 2745
Smithsonian Astrophysical
Observatory compendium (SAO Number)

Fundamental Katalog (FK5 Number)



Copyright © 1998 - 2010 by Arnold V. Lesikar,
Professor Emeritus
Dept. of Physics, Astronomy, and Engineering Science,
St. Cloud State University,St. Cloud, MN 56301-4498

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