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Interstellar Doppler Shifts


    Microwave Visible
Wavelength   0.20 m 656 nm
Frequency   1.5 GHz 457 THz
Transmitter on surface of rotating alien planet 0.46 km/s 2.31 kHz 707 MHz
Transmitter in synchronous orbit about alien planet 3.07 km/s 15.5 kHz 4.68 GHz
Extra-solar planet in orbit about alien star 29.8 km/s 149 kHz 45.4 GHz
Relative (radial) motion between alien star system and Sol 20.0 km/s 100 kHz 30.5 GHz


Alien star/planet system assumed similar to Sol/Earth.


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