A planet is detected via the Doppler technique.The repeating pattern of the stellar motion tells us
A)the planet's size.
B)the planet's mass.
C)the planet's density.
D)the orbital period of the planet.
E)the orbital eccentricity of the planet.

Question

Quizplus · Accepted Answer

The repeating pattern of the stellar motion detected via the Doppler technique can tell us the orbital period of the planet. This is because the motion of the planet causes the star to wobble, and the time taken to complete one full wobble gives us the orbital period of the planet.

A Planet Is Detected Via the Doppler Technique