Discovery | |
---|---|
Discovered by |
Butler,
Marcy, Vogt, Apps et al. |
Discovery site | California, United States |
Discovery date | 9 September 1998 |
radial velocity | |
Orbital characteristics | |
0.04213±0.00034 AU | |
Eccentricity | 0.0093±0.0046 [1] |
3.0965828±0.0000043 [1] d | |
2454342.87±0.30 [1] | |
360±200 [1] | |
Semi-amplitude | 68.91±0.36 [1] |
Star | HD 187123 |
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. [4]