Each of the planets has specific characteristics that vary according to the Zodiac sign they were in at the time of the person's birth or the sign they will be within the near future.
These characteristics and the indications associated with them are also modified according to the Astrological Houses in which the planet is or was located at the time of the person's birth.
This type of analysis - of the sun sign, the ruling planets, and the Houses- allows more personalized and detailed astrological forecasts to be made on each star map.