I know that the formula to find the velocity of an object is [(apparent wavelength/true wavelength)-1]speed of light, but how do you use this info to find the mass of the planet? #-o1. Imagine you are observing a spacecraft moving in a circular orbit of radius 100,000 km around a distant planet. You happen to be located in the plane of the spacecraft's orbit. You find that the spacecraft's radio signal varies periodically in wavelength between 2.99964 m and 3.00036 m. Assuming that the radio is broadcasting normally, at a constant wavelength, what is the mass of the planet.

Thanks,

Brady Yoon