HD 187123 b
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.
| 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 |
| 3.0965828±0.0000043 d | |
| 2454342.87±0.30 | |
| 360±200 | |
| Semi-amplitude | 68.91±0.36 |
| Star | HD 187123 |
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.
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