SkyRef / Stars

Alpheratz

Magnitude 2.27, yellow-white. Comfortably visible to the naked eye from a suburban sky.

The numbers

Magnitude2.27
Colouryellow-white
Right ascension0.153h
Declination+59.15°
B−V index0.34
CatalogueHR 21

What you are looking at

Alpheratz shines at magnitude 2.27, making it comfortably visible to the naked eye from a suburban sky. Its B−V colour index of 0.34 makes it yellow-white to the eye, corresponding to a surface temperature of around 6,000 K.

It sits at right ascension 0.15 hours and declination +59.1°. It sits well north on the sky and is comfortably placed for northern hemisphere observers.

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