| Discovery | |
|---|---|
| Discovered by | Butler, Marcy, Vogt, Apps et al. |
| Discovery site | California, United States |
| Discovery date | 9 September 1998 |
| Detection method | radial velocity |
| Orbital characteristics | |
| Semi-major axis | 0.04213±0.00034 AU |
| Eccentricity | 0.0093±0.0046 |
| Orbital period (sidereal) | 3.0965828±0.0000043 d |
| Time of periastron | 2454342.87±0.30 |
| Argument of periastron | 360±200 |
| Semi-amplitude | 68.91±0.36 |
| 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.
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.
See also
References
- ^ Feng, Y. Katherina; et al. (2015). "The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets". The Astrophysical Journal. 800 (1). 22. arXiv:1501.00633. Bibcode:2015ApJ...800...22F. doi:10.1088/0004-637X/800/1/22. S2CID 56390823.
- Butler, R. Paul; et al. (1998). "A Planet with a 3.1 Day Period around a Solar Twin". Publications of the Astronomical Society of the Pacific. 110 (754): 1389–1393. Bibcode:1998PASP..110.1389B. doi:10.1086/316287.
- Wright, J. T.; et al. (2009). "Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems". The Astrophysical Journal. 693 (2): 1084–1099. arXiv:0812.1582. Bibcode:2009ApJ...693.1084W. doi:10.1088/0004-637X/693/2/1084. S2CID 18169921.
- Buzard, Cam; et al. (July 2020). "Simulating the Multi-epoch Direct Detection Technique to Isolate the Thermal Emission of the Non-transiting Hot Jupiter HD187123b". The Astronomical Journal. 160 (1): 13. arXiv:2005.03020. Bibcode:2020AJ....160....1B. doi:10.3847/1538-3881/ab8f9c. S2CID 218538482. 1.
External links
- "Notes for planet HD 187123 b". Extrasolar Planets Encyclopaedia. Retrieved 2008-08-25.
- "HD 187123". Exoplanets. Archived from the original on 2009-11-24. Retrieved 2008-08-25.
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