Rashis ruled by Sun:  Leo
Sun Exaltation Rashi : Aries
Sun Debilitation Rashi : Libra
Nakshatras ruled by Sun : Kruttika, Uttara Phalguni, Uttara Shadha
Sun is karaka for : Soul
Friends :  Moon, Mars, Jupiter
Neutral: Mercury
Enemies:  Saturn, Venus
Unfavorable rashis: Capricorn
Gemstone:  Manik (Ruby)
Day ruled by Sun: Sunday
Numbers ruled by Sun: 1
Marankarak house for Sun: twelfth house

Sun is significator of soul. Sun is the source of energy.

People with well placed sun have good chances of rising to high position in society. Sun decides a person’s status in society. Well placed sun in horoscope helps to rise in politics.
Sun shows the outward nature and ones behavior in society. This is defined by sun signs.

Sun enters a new rashi every month. The transit of sun in 12 rashis defines one year. The entry of sun in a new rashi is called ‘sankraman’. Sun enters Capricorn rashi (maker rashi) on 14 January. This is called ‘Makar Sankraman’. This is celebrated as the Makar Sankranti festival in India. The transit and sankraman of Sun are important in Mundane Astrology.