HD 187123 b
DiscovererButler, Marcy,
Vogt, Apps et al.
Discovery siteCalifornia, United States
Discovered9 September 1998
Discovery methodradial velocity
Apsisastron
Semimajor0.04213 ± 0.00034 AU
Eccentricity0.0093 ± 0.0046[1]
Period3.0965828 ± 0.0000043[1] d
Time periastron2,454,342.87 ± 0.30[1]
Arg peri360 ± 200[1]
Semi-amplitude68.91 ± 0.36[1]
StarHD 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]

See also

References

  1. ^ 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
  2. ^ 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
  3. ^ 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
  4. ^ 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.