Hellenica World

HD 185269

HD 185269 is a seventh magnitude star approximately 153 light-years away in the constellation Cygnus. It is easily visible to binoculars, but not the naked eye.

The star is a quarter more massive and four times more luminous than our local star. The spectrum of the star is G0IV.

Planetary system

On August 18, 2006, a Jupiter-mass hot Jupiter was found by Moutou and Johnson. The planet takes 6.8 days to orbit at 0.077 AU from the star in an eccentric orbit.

The HD 185269 system
(in order from star)
Mass Semimajor axis
Orbital period
b >0.94 MJ 0.077 6.838 ± 0.001 0.3 ± 0.04

See also

* List of extrasolar planets


* Moutou et al.; Loeillet, B.; Bouchy, F.; Da Silva, R.; Mayor, M.; Pont, F.; Queloz, D.; Santos, N. C. et al. (10-2006). "ELODIE metallicity-biased search for transiting Hot Jupiters. III. A hot Jupiter orbiting the star HD 185269". Astronomy and Astrophysics 458: 327–329. doi:10.1051/0004-6361:20066029. http://adsabs.harvard.edu/abs/2006A%26A...458..327M.
* Johnson et al.; Marcy, Geoffrey W.; Fischer, Debra A.; Henry, Gregory W.; Wright, Jason T.; Isaacson, Howard; McCarthy, Chris (12-2006). "An Eccentric Hot Jupiter Orbiting the Subgiant HD 185269". The Astrophysical Journal 652: 1724–1728. doi:10.1086/508255. http://adsabs.harvard.edu/abs/2006ApJ...652.1724J.

External links

* "Notes for star HD 185269". The Extrasolar Planet Encyclopaedia. http://exoplanet.eu/star.php?st=HD+185269.
* "HD 185269". Systemic. http://oklo.org/?p=204.

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