Which detection techniques can find the planet's orbital distance (assuming we know the mass of the star)?
A)only the Doppler technique
B)only the transit technique
C)only the astrometric technique
D)all of these techniques

Question

Quizplus · Accepted Answer

All three techniques, namely Doppler technique, transit technique, and astrometric technique, can find a planet's orbital distance if we know the mass of the star. The Doppler technique measures the wobbling motion of the star around the system's center of mass, providing information about the planet's mass and orbital distance. The transit technique measures the momentary dip in the star's brightness as the planet passes in front of it, allowing us to estimate the planet's size and orbital distance. Lastly, the astrometric technique measures the star's apparent shift in position due to the planet's gravity, which can be used to calculate the planet's mass and orbital properties. Therefore, all three techniques can provide valuable information to determine a planet's orbital distance, given knowledge of the star's mass.

Which Detection Techniques Can Find the Planet's Orbital Distance (Assuming