What is the spectral class of the Sun?

The Sun is classified as a G2V star, which is part of the spectral classification system used by astronomers to categorize stars based on their temperature, color, and spectral characteristics.

In this classification, the letter "G" indicates that the Sun has a surface temperature between approximately 5,300 and 6,000 degrees Kelvin, resulting in a yellowish appearance. The "2" provides a more specific rank within the G class, indicating the Sun's unique position among G-type stars. The "V" denotes that the Sun is a main-sequence star, which means it is in a stable phase of its life cycle, fusing hydrogen into helium in its core.

This classification is significant because it helps astronomers understand the Sun's characteristics in relation to other stars, and it is crucial for studies concerning stellar evolution and the potential habitability of planets in orbit around stars of similar types.