Sirius, the brighteststar in the sky, belongs to the A-type white classification. Specifically, the primarystar of this binary system (the star visible to the naked eye) is classified as A1Vm. The 'V' here denotes that it is a main sequence or dwarfstar, and the 'm' suffix relates to its unusual metallicity, with Sirius A showing unusually high levels of iron in its surface layers. Imagery provided by Aladin sky atlas
