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HD 23079

HD 23079 is a star approximately 114 light years away in the constellation Reticulum. Since the star is magnitude 7.1, it is not visible to the naked eye, but at least in binoculars, it should be easily visible. The spectral type is F8 or G0, it is a main-sequence (hydrogen-fusing) star. The star is larger and more massive than our Sun. As it is typical for planet-harboring stars, it is a population I star, with metallicity of –0.24 dex (58% solar). The age of the star is 6.53 billion years old, older than Sun’s 4.57 billion years.

Planetary system

In October 2001, a giant planet orbiting the star was announced.[1]

The HD 23079 system[2]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity
b >2.45 ± 0.21 MJ 1.596 ± 0.093 730.6 ± 5.7 0.102 ± 0.031

References

1. ^ Tinney et al.; Butler, R. Paul; Marcy, Geoffrey W.; Jones, Hugh R. A.; Penny, Alan J.; McCarthy, Chris; Carter, Brad D. (2002). "Two Extrasolar Planets from the Anglo-Australian Planet Search". The Astrophysical Journal 571 (1): 528–531. doi:10.1086/339916. http://www.iop.org/EJ/article/0004-637X/571/1/528/55113.html.
2. ^ Butler et al.; Wright, J. T.; Marcy, G. W.; Fischer, D. A.; Vogt, S. S.; Tinney, C. G.; Jones, H. R. A.; Carter, B. D. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. doi:10.1086/504701. http://www.iop.org/EJ/article/0004-637X/646/1/505/64046.html.


External links

* "Notes for star HD 23079". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/star.php?st=HD+23079.
* "HD 23079 – Yellow Main Sequence Star". Extrasolar Visions. http://www.extrasolar.net/startour.asp?StarCatID=normal&StarID=148.
* "NLTT 11572 – High proper-motion star". SIMBAD. http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HD+23079.

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