influence

A power affecting a person, thing, or course of events, especially one that operates without any direct or apparent effort.

Power to sway or affect based on prestige, wealth, ability, or position.

A person who exerts such power.

A determining factor believed by some to affect individual tendencies and characteristics understood to be caused by the positions of the stars and planets at the time of one's birth.

Factors believed to be caused by the changing positions of the stars and planets in relation to their positions at the time of one's birth.