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A G2 V star, like our Sun, is a main-sequence star of intermediate temperature and luminosity. The "G2" designation indicates it's a yellow star with a surface temperature of about 5,800 Kelvin (K), falling within the second hottest category of G-type stars. The "V" signifies it's a main-sequence, or dwarf, star, which is the most common type of star. These stars generate energy through thermonuclear fusion in their cores. The Sun is not exceptionally large but is in the top 5 percent of stars in its immediate neighborhood.1234

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