オート＝プロヴァンス天文台
The ELODIE Planet Search Survey, undertaken using the ELODIE spectrograph at the Haute-Provence Observatory in southeastern France, was a large-scale search for extrasolar planets orbiting G-type and F-type dwarf stars visible from the Northern Hemisphere through use of the radial velocity method (the orbit of a planet tugs on its host star as it orbits, causing a perceived Doppler effect in the star's spectrum). This survey, which started in 1994, led to the discovery of 51 Pegasi b, the first extrasolar planet discovered in the orbit of a sunlike star. By 2003, the discovery of six new planets, including HD 8574 b, was announced, bringing ELODIE's planet discovery count to eighteen.