Chart Ruler

From Astrowiki-en

The planet that rules the sign on the Ascendant in the natal chart. When interpreting the chart, the house position and sign of the ruling planet are considered to be significant factors. These indicate where (house) and how (sign of the zodiac) an individual's basic disposition (Ascendant) will be expressed. This additional information helps to give a more nuanced description of the Ascendant.