A spectral class of stars whose surface temperatures lie in the range 5,000 to 6,000 Kelvin, typified as having a yellow colouration.
After the Sun, Alpha Centauri is the brightest G-type star in the sky, and also the closest at a distance of a little over four light years. This is a multiple system, with only Alpha1 being G-type, while its companion Alpha2 is a cooler K-type orange star. Imagery provided by Aladin sky atlas
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