HD 181720 b

HD 181720 b is an extrasolar planet which orbits the G-type main sequence star HD 181720, located approximately 190 light years away in the constellation Sagittarius. This planet has at least three-eighths the mass of Jupiter and takes over two and five-eighths years to orbit the star at a semimajor axis of 1.78 AU with an eccentricity of 0.26. This planet was detected by HARPS on October 19, 2009, together with 29 other planets.
== See also ==
* HD 5388 b
* HD 190984 b
== References ==
Category:Exoplanets
Category:Exoplanets discovered in 2009
Category:Exoplanets detected by radial velocity
Category:Gas giants
Category:Sagittarius (constellation)