ドップラー分光法
In 2010, the discovery of an exoplanet orbiting HD 28254 was published. It was detected by Doppler spectroscopy from observations with the HARPS spectrograph between October 2003 and April 2009. The best fit model for the 32 radial velocity data obtained consists of a planet in an eccentric 1116 days orbit, plus a quadratic trend that is probably caused by the star HD 28254 B.