The Okayama Planet Search Program was started in 2001 with the goal of spectroscopically searching for planetary systems around stars. It reported on the detection of 3 new extrasolar planets: (18 Delphini b

18 Delphini b

18 Delphini b or 18 Del b is a very massive and dense planet approximately 238 light-years away in the constellation of Delphinus. The planet orbits the yellow giant star 18 Delphini. The planet has a minimum mass of 10.3 MJ and a period of 993 days. This planet was discovered on February 19,...

, ksi Aql b

Xi Aquilae b

Xi Aquilae b is an extrasolar planet approximately 200 light-years away in the constellation of Aquila. The planet was discovered orbiting the yellow giant star Xi Aquilae in 2008. The planet has a minimum mass of 2.8 Jupiter and a period of 137 days....

, and 41 Lyncis b

41 Lyncis b

41 Lyncis b is a gas giant exoplanet that orbits the star 41 Lyncis. It has a minimum mass of 2.7 times that of Jupiter and an orbital period of 184 days . It was discovered and announced by Sato on February 19, 2008.-References:...

), around intermediate-mass G and K giants 18 Delphini

18 Delphini

18 Delphini or 18 Del is a yellow giant star approximately 238 light-years away in the constellation of Delphinus. , an extrasolar planet was confirmed to be orbiting the star.- Planetary system :...

, Xi Aquilae

Xi Aquilae

- External links :* * *...

, and HD 81688. Also, it updated the orbital parameters of HD 104985 b

HD 104985 b

HD 104985 b is an extrasolar planet that takes 198 days to orbit at the distance of 0.78 AU. It is definitely a gas giant since it has mass 61/3 times Jupiter.- External links :*...

, the first planet discovered around the G giants from the survey, by using the data collected during the past six years. Since 2001, it has been conducting a precise Doppler

Doppler

-Doppler effect and its applications:* Doppler effect* Doppler beaming* Doppler broadening* Doppler cooling** Doppler cooling limit* Doppler echocardiography** Doppler ultrasound, also called Doppler sonography** Transcranial doppler* Doppler fetal monitor...

 survey

Survey

-Quantitative research:* Statistical survey, a method for collecting quantitative information about items in a population* Paid survey, a method that companies use to collect consumer opinions about a product by paying consumers for participating in the survey...

 of about 300 G and K giants using a 1.88m telescope, the High Dispersion Echelle Spectrograph (HIDES

Hides

A hide is an animal skin treated for human use. Hides include leather from cattle and other livestock animals, alligator skins, snake skins for shoes and fashion accessories and furs from wild cats, mink and bears. In some areas, leather is produced on a domestic or small industrial scale, but most...

), and an iodine absorption cell I2 cell at the Okayama Astrophysical Observatory (OAO).