Stellar astrology is an advancement of the vedic astrology. In astrology the 360° zodiac belt is divided into 12 zodiacs signs of each 30°.  Similarly the 360° zodiac belt is divided as 27 star divisions of each 13° 20′. Further each star division 13° 20′ is divided into 4 equal parts of each 3° 20 which is known as padas. Hence each zodiac sign has 9 padas. Check zodiac division post more about this.

Vedic astrology, which is used during an Astrology Character Reading Consultation Session, the astrological interpretation is restricted based on the placement of the planet in the zodiac sign, whereas in stellar astrology the interpretation is based on the star/constellation in which the planet is placed within the zodiac sign. For example, if a planet is in Aries sign then there is chance that it can be in any one of the three constellations Ashwini, Bharani or Krittika, so the planet performs the actions differently according to which constellation it is deposited.

Each constellation is owned by a planet and it is called as star lord. Further each constellation is divided into 9 parts and each part is owned by the planet which is called as sub lord. Stellar astrology uses Placidus system of house division and explores to the level of sub lords with respect to the planet position status in the zodiac. In stellar astrology, the astrological analysis is done by considering the star and sub lords and the inter-links among them with respect to the sign they occupied. Thus stellar astrology is systematic and very well defined for accurate astrological analysis.