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
An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not recognized as such. The first confirmation of detection occurred in 1992. A different planet, init ...
: (
18 Delphini b
18 Delphini b (abbreviated 18 Del b), formally named Arion , is an extrasolar planet approximately 249 light-years away in the constellation of Delphinus.
The 993-day period planet orbits the yellow giant star 18 Delphini. A very massive and de ...
,
xi Aql b, and
41 Lyncis b
41 Lyncis b (abbreviated 41 Lyn b), also designated HD 81688 b and named Arkas , is an extrasolar planet approximately 280 light-years from Earth in the constellation of Ursa Major.
A gas giant with a minimum mass 2.7 times that of Jupiter, it or ...
), around intermediate-mass G and
K giants 18 Delphini
18 Delphini, also named Musica , is a single star in the constellation of Delphinus of the low northern hemisphere. It has a Sun-like golden hue and is faintly visible to the naked eye with an apparent visual magnitude of 5.506. The star i ...
,
Xi Aquilae, and
HD 81688. Also, it updated the orbital parameters of
HD 104985 b, 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
The (NAOJ) is an astronomical research organisation comprising several facilities in Japan, as well as an observatory in Hawaii and Chile. It was established in 1988 as an amalgamation of three existing research organizations - the Tokyo Astro ...
(OAO).
Discoveries
*
Observatory
*
Okayama Astrophysical Observatory
The (NAOJ) is an astronomical research organisation comprising several facilities in Japan, as well as an observatory in Hawaii and Chile. It was established in 1988 as an amalgamation of three existing research organizations - the Tokyo Astro ...
,
Kurashiki in Japan
References
*
*
*
*
Exoplanet search projects
{{astrobiology-stub