Hellenica World

HD 4308

HD 4308 is a 6th magnitude star located approximately 71 light years away in the southern constellation of Tucana.[1]

Planetary system

In 2005, a low-mass planet was found in orbit around this star using the radial velocity method with the HARPS spectrograph.[2]
The HD 4308 system[2] Companion
(in order from star) Mass Semimajor axis
(AU) Orbital period
(days) Eccentricity
HD 4308 b >0.0442 MJ 0.115 15.56 ± 0.02 0.00 ± 0.01

See also

* HARPS spectrograph
* HD 4203
* HD 4208
* List of extrasolar planets


1. ^ a b c d e f g h i j k l m n "SIMBAD query result: LHS 1139 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+4308. Retrieved 2009-05-23.
2. ^ a b Udry et al.; Mayor, M.; Benz, W.; Bertaux, J.-L.; Bouchy, F.; Lovis, C.; Mordasini, C.; Pepe, F. et al. (2006). "The HARPS search for southern extra-solar planets V. A 14 Earth-masses planet orbiting HD 4308". Astronomy and Astrophysics 447 (1): 361–367. doi:10.1051/0004-6361:20054084. http://www.edpsciences.org/articles/aa/abs/2006/07/aa4084-05/aa4084-05.html. web preprint

External links

* "HD 4308". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+4308. Retrieved 2009-05-23.

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