HD 187123 b is a typical "hot Jupiter" located approximately 150 light-years away in the constellation of Cygnus, orbiting the star HD 187123.
It has a mass about half that of Jupiter and it orbits in a very tight, round orbit around the star every three days.
[2][3] The star has also been monitored for possible transits by the planet, but none was found.
The presence of water has been detected in the atmosphere of HD 187123 b with high confidence.
This extrasolar-planet-related article is a stub.