Solar

The Sun is one of the stars in the Milky Way Galaxy. It is the physical center of the solar system and accounts for 99.9% of the mass of the solar system. It is a typical main sequence star with a spectral type of G2V (yellow). Its estimated age is about 4.6 billion years, and it is thought to have already been in the main sequence for half its time.

Also, because the Sun is the central star in the solar system, the central star around which a planet in any planetary system revolves is sometimes figuratively called the Sun.