Queloz performed an analysis on 51 Pegasi using radial velocity measurements (Doppler effect), and was astonished to find a planet with an orbital period of 4.2 days.
Marcy confirmed Michel Mayor and Didier Queloz's discovery of the first extrasolar planet orbiting a Sun-like star—51 Pegasi b.
Didier Drogba | Didier Lockwood | Samwise Didier | Didier Pasquette | Didier Julia | Didier Eribon | Didier Daurat | Saint-Didier | Didier Sornette | Didier Ratsiraka | Didier Queloz | Didier Levallet | Didier Camberabero | Didier Awadi | Didier Auriol | Saint-Didier-de-Bizonnes | Robert Didier | Richard Didier | Didier Reynders | Didier Rault | Didier Mollard | Didier Malherbe | Didier Lupi Second | Didier Gailhaguet | Didier de Radiguès | Didier Daeninckx | Didier Baptiste | Didier Awadi ''(Photo by Seneweb)''. | Didier Almouzni |
Michel Mayor and Didier Queloz discovered the planet orbiting the star 51 Pegasi from observations made using ELODIE on the 1.93 m telescope.