Doppler spectroscopy (also known as the radial-velocity method, or colloquially, the wobble method) is an indirect method for finding extrasolar planets and brown dwarfs from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet's parent star. As of January 2026, over 1,100 known extrasolar planets (about 19.0% of the total) have been discovered using Doppler spectroscopy.
Doppler spectroscopy (also known as the radial-velocity method, or colloquially, the wobble method) is an indirect method for finding extrasolar planets and brown dwarfs from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet's parent star. As of January 2026, over 1,100 known extrasolar planets (about 19.0% of the total) have been discovered using Doppler spectroscopy.
Source: Wikipedia "Doppler spectroscopy" · CC BY-SA 4.0
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