SkyRef / Stars

Acrux

Magnitude 1.33, blue-white. A first-magnitude star, among the brightest few dozen visible.

The numbers

Magnitude1.33
Colourblue-white
Right ascension12.443h
Declination-63.10°
B−V index-0.24
CatalogueHR 4730

What you are looking at

Acrux shines at magnitude 1.33, making it a first-magnitude star, among the brightest few dozen visible. Its B−V colour index of -0.24 makes it blue-white to the eye, corresponding to a surface temperature of over 10,000 K.

It sits at right ascension 12.44 hours and declination -63.1°. It is deep in the southern sky and never rises for most of the northern hemisphere.

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Other named stars

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