How is the sun classified on the Hertsprung-Russell diagram?

The Sun is classified as a G-type main-sequence star (G dwarf) on the Hertzsprung-Russell diagram. It falls within the spectral class G2V, indicating its surface temperature of about 5,500 degrees Celsius and its luminosity relative to other stars. The main-sequence category signifies that the Sun is in a stable phase of hydrogen fusion in its core, where it has remained for approximately 4.6 billion years.