For Astrology, this work has been rather isolated or of low statistical quality. It's been around for millennia in many contradicting forms. It seems to be sustained largely among women who selectively remember hits and like hearing about themselves. Scientific studies on different astrological scheme have found no ability to predict personality type, marital success or deaths. Its development was based in Geocentricism and an abandoned polytheistic religion of quirky gods.
Astrological signs have no relation to planet activity in the named constellations.
There doesn't seem to be any natural explanation for how the stars could directly affect a child at the point of birth. The gravitational and electromagnetic affect of a nearby clock would be greater than the nearest planet. If there is some known or unknown force that the physical planets could have on humans, how would it selectively affect those born at a certain timeplace. Would 'Natal discrimination' be as bad as racial, sex, age, or national origin discrimination. And if so, should Astrology take into account distant nebula, stars and planets.