Astronomically, It is assumed that planets in the universe are placed in between a belt, also known as Zodiac Belt. It is also considered that this belt forms a circle of 360 degree. Hence all the planets move into a circular path in the sky. This imaginary belt is classified into 12 equal parts of 30 degree each, known as Zodiac Sign or “Rashi”.
Further it is divided into 27 equal parts of 13 degree 20 minutes each, known as Nakshatra or Star. Again, each star is divided into 9 divisions, known as “Sub”. Now, this 9 divisions of stars hold a real concept or true dignity of KP Astrology. The lords of “Sub” divisions are also known as “Sub Lords” in kp system.
The portion of 9 divisions into a particular Nakshatra and ruling planet of these divisions are totally based upon the “Vimshottari Dasha System” of Vedic Astrology. Like a planet with lesser period in Vimshottari Dasha cycle would occupy the lesser portion in 13 degree 20 minutes of certain Nakshatra whereas the planet with the greater period in Vimshottari Dasha Cycle would occupy the greater portion of that particular Nakshatra.
The concept of dividing the Zodiac is almost same in both Vedic Astrology as well as in kp Astrology. Hence KP system can be said as a modernized form of Vedic Astrology with simple techniques to predict an event.