which detection method or methods measure the gravitational tug of a planet on its star, allowing us to estimate planetary mass? (a) the transit method only (b) the doppler method only (c) the astrometric method only (d) the transit and doppler methods (e) the astrometric and doppler methods (f) the astrometric and transit methods

Answer:Detection methods to measure the gravitational tug of a planet on its star that is allows us to estimate planetary mass is: the astrometric and doppler methods.Explanation:Doppler spectroscopy: It is a method for finding extrasolar planets and brown dwarfs from radial-velocity measurements through monitoring of doppler shifts in the spectrum of the planet's parent star is called doppler spectroscopy. It is also known as the radial-velocity method or the wobble method.Astrometry: Method that determines the motion of a star by making accurate measurements of its position on the sky is called astrometry. This method can be used to recognize the planets around a star by measuring little changes in the position of the stars.Learn more about planets:https://brainly.com/question/14581221#SPJ4