A planet is said to “make a station” when it seems to stop moving. A planet has a greater influence in the birth chart when it is stationary because its energy is concentrated and focused at the degree of the Zodiac it occupies.
There are two types of stationary planets. The first one occurs when a planet that has been direct is about to turn retrograde. Movement in the affairs of life ruled by this planet slows down in preparation for an introspective phase of experience.
The second one occurs when a planet that has been retrograde is about to go direct. The person, who has been in an introspective phase regarding the affairs ruled by this planet, is preparing to move out into new experience. A stationary planet focuses its energy in one spot and in one way, and therefore, produces a deep impression on the person.