Hellenica World

HD 142

HD 142 is a 6th magnitude star approximately 84 light years away[1] in the constellation of Phoenix. A companion star was detected in 1894 making this a binary star system.[3]

Planetary system

In 2001, the Anglo-Australian Planet Search team lead by Chris Tinney announced the discovery of an extrasolar planet orbiting the star.[4] There is an additional linear trend in the radial velocity data that may be due to another planet or to the stellar companion.[5]


The HD 142 system[6]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity
b >1.31 ± 0.18 MJ 1.045 ± 0.061 350.3 ± 3.6 0.26 ± 0.18

See also

* List of extrasolar planets


References

1. ^ a b c d e f van Leeuwen, F. (2007). "HIP 522". Hipparcos, the New Reduction. http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=521. Retrieved 2009-12-04.
2. ^ Holmberg et al. (2009). "HD 142". Geneva-Copenhagen Survey of Solar neighbourhood III. http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/130/gcs3&recno=18. Retrieved 2010-01-27.
3. ^ Raghavan, Deepak et al. (2006). "Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems". The Astrophysical Journal 646 (1): 523–542. doi:10.1086/504823. http://www.iop.org/EJ/article/0004-637X/646/1/523/64035.html.
4. ^ 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.
5. ^ Wright et al.; Marcy, G. W.; Fischer, D. A; Butler, R. P.; Vogt, S. S.; Tinney, C. G.; Jones, H. R. A.; Carter, B. D. et al. (2007). "Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars". The Astrophysical Journal 657 (1): 533–545. doi:10.1086/510553. http://www.iop.org/EJ/article/0004-637X/657/1/533/65907.html.
6. ^ 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

* "HD 142". Extrasolar Visions. http://www.extrasolar.net/startour.asp?StarCatId=&StarId=145.
* "HD 142 b". Planetquest new worlds atlas. http://planetquest.jpl.nasa.gov/atlas/atlas_profile.cfm?Star=121.

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