| Discovery | |
|---|---|
| Discovered by | Moutou et al. and Johnson et al. |
| Discovery site | Observatoire de Haute Provence and Lick Observatory |
| Discovery date | 2006 |
| Detection method | Doppler spectroscopy |
| Orbital characteristics | |
| Semi-major axis | 0.0770±0.0034 AU |
| Eccentricity | 0.229±0.014 |
| Orbital period (sidereal) | 6.83776±0.00027 d |
| Time of perihelion | 2453154.25±0.11 JD |
| Argument of perihelion | 176.2±3.5 º |
| Semi-amplitude | 93.3±1.4 m/s |
| Star | HD 185269 |
| Physical characteristics | |
| Mass | ≥1.010±0.014 MJ |
HD 185269 b is a hot Jupiter extrasolar planet approximately 170 light years away in the constellation of Cygnus. The minimum mass is slightly less than Jupiter and the orbital period is about one week. Most hot Jupiters are thought to have undergone tidal circularization, making the eccentricity of HD 185269 b (e=0.3) unusual. Despite having a large transit probability, none have yet been detected by various photometric monitoring campaigns.
The planet was discovered nearly simultaneously by Johnson et al. as part of a search for planets around subgiants, and by Moutou et al. as part of a search for planets around metal-rich stars (the submission dates to the journals ApJ and Astronomy and Astrophysics were separated by only 9 days).
References
- ^ Johnson, John Asher; et al. (2006). "An Eccentric Hot Jupiter Orbiting the Subgiant HD 185269". The Astrophysical Journal. 652 (2): 1724–1728. arXiv:astro-ph/0608035. Bibcode:2006ApJ...652.1724J. doi:10.1086/508255.
- ^ Moutou, C.; et al. (2006). "ELODIE metallicity-biased search for transiting Hot Jupiters. III. A hot Jupiter orbiting the star HD 185269". Astronomy and Astrophysics. 458 (1): 327–329. arXiv:0707.0958. Bibcode:2006A&A...458..327M. doi:10.1051/0004-6361:20066029.
- ^ Luhn, Jacob K.; et al. (2019). "Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts". The Astronomical Journal. 157 (4). 149. arXiv:1811.03043. Bibcode:2019AJ....157..149L. doi:10.3847/1538-3881/aaf5d0. S2CID 102486961.
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
External links
- "HD 185269". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-08-02.
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