Cor CaroliAlpha Canum Venaticorum is a system of a big and a small white star. Generally only the brighter of the two, Alpha-2, is called Cor Caroli.This star has a magnetic field several hundred times stronger than that of the Sun. Therefore is has got large spots which vary its luminosity for 0.1 magnitudes. Constellation: Canes Venatici Distance: 110 light-years Space between Alpha-1 and Alpha-2 Canum Venaticorum: 675 AU
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