In traditional astrology, planets that are in the sign of their rulership, domicile, exaltation, triplicity, term, or face are considered to have essential Dignity, giving them greater strength and power than those that lack this quality.
This means that the planet’s energy and influence is more potent when it is in the sign it rules or is in a sign that it is particularly strong in.
The most powerful position for a planet is when it is in its rulership sign, but being in any of the other categories of essential Dignity still provides it with additional strength and support.
When a planet is in its rulership sign, it is said to be in its “natural home”, an environment it is already comfortable with and understands.
This gives the planet a strong sense of confidence and security, allowing it to express its energies and attributes more fully than in any other sign.
The quality of its rulership sign also provides a sense of clarity, allowing it to make decisions that are more in tune with its energy and nature.
Additionally, being in rulership sign can provide a greater range of expression for its energy.