HD 164922 b

Planetbox begin
name=HD 164922 bPlanetbox star
star=HD 164922
constell=Hercules
RA=RA|18|02|30.86
DEC=DEC|+26|18|46.81
dist_ly=71.5
dist_pc=21.93
class=K0VPlanetbox orbit
semimajor=2.11±0.13
eccentricity=0.05±0.14
period=1155±23
ang_dist=96.215
long_peri=195
t_peri=2,411,100±280
semi-amp=7.3±1.2Planetbox character
mass=>0.36±0.046
radius=~0.77
temperature=~156Planetbox discovery
discovery_date=July 15, 2006
discovery_method=Radial velocity
discovery_site=California, USA
discoverers=Butler et al.
discovery_status=Published

HD 164922 b is a water jovian extrasolar planet orbiting around orange dwarf star HD 164922, located in Hercules constellation at a distance of 71.5 light years from Earth. It was the first long period saturnian planet discovered. Its inclination is not known, and its true mass may be slightly greater. Radius and temperature are only speculative. The angular separation between the companion planet and host star is nearly 100 mas. The planet also has a low eccentricity, unlike most other long period extrasolar planets – 0.05 – about the same as Jupiter and Saturn in our own solar system.

References

*cite journal | url=http://www.journals.uchicago.edu/doi/abs/10.1086/504701 | author=Butler "et al." | title=Catalog of Nearby Exoplanets | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505 – 522 | year=2006 ( [http://xxx.lanl.gov/abs/astro-ph/0607493 web Preprint] )

ee also

* 14 Herculis b

External links

* [http://exoplanet.eu/star.php?st=HD+164922 The Extrasolar Planets Encyclopaedia: HD 164922]