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
Observatory Okayama Astrophysical Observatory, Kurashiki in Japan
References
Sato, Bun'ei; et al. (2008). "Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD167042". Publications of the Astronomical Society of Japan. 60 (6): 1317–1326. arXiv:0807.0268. Bibcode:2008PASJ...60.1317S. doi:10.1093/pasj/60.6.1317. S2CID 67841762. "Okayama Astrophysical Observatory Homepage". oao.nao.ac.jp. Retrieved 2008-10-11. "Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Delphini, Xi Aquilae, and HD81688" (PDF). www.oao.nao.ac.jp. Retrieved 2008-10-11. "telescope". oao.nao.ac.jp. Retrieved 2008-10-11.