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HD 68988

HD 68988 is an 8th magnitude G-type star located approximately 192 light-years away in Ursa Major constellation.

Planetary system

There are two planets: HD 68988 b was discovered in 2001 and HD 68988 c was discovered in 2006.

The HD 68988 system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity
b >1.92 MJ 0.0704 6.27670 ± 0.000053 0.1497 ± 0.0079
c >5.29 MJ 5.32 4100 ± 7300 0.01 ± 0.27

See also

* List of extrasolar planets


References

* Vogt et al.; Butler, R. Paul; Marcy, Geoffrey W.; Fischer, Debra A.; Pourbaix, Dimitri; Apps, Kevin; Laughlin, Gregory (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal 568 (1): 352–362. doi:10.1086/338768. http://www.iop.org/EJ/article/0004-637X/568/1/352/54961.html.
* 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.
* 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.


External links

* "Notes for star HD 68988". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/star.php?st=HD+68988. Retrieved 2008-08-25.
* "HD 68988". Extrasolar Visions. http://www.extrasolar.net/planettour.asp?StarCatId=normal&StarId=144. Retrieved 2008-08-25.

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