The Okayama Planet Search Program (OPSP) 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: (Arion, Fortitudo, and Arkas), around intermediate-mass G and K giants Musica, Libertas, and Intercrus. Also, it updated the orbital parameters of Meztli, 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 survey of about 300 G and K giants using a 1.88m telescope, the High Dispersion Echelle Spectrograph (HIDES), and an iodine absorption cell I2 cell at the Okayama Astrophysical Observatory (OAO).
Discoveries +Planets discoveredNameMass (MJ)Discovery date Arion10.32008 Fortitudo2.82008 Arkas2.7200881 Ceti b5.32008Spe4.820086 Lyncis b2.012008
Observatory Okayama Astrophysical Observatory, Kurashiki in Japan
References