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HD 231701

HD 231701 is a yellow-white dwarf star approximately 354 light years away in the constellation of Sagitta. It is a 9th magnitude star, meaning the star is not visible to the naked eye, but powerful binoculars or a small telescope is needed to view the star. It is an F-type main-sequence star, a type of hydrogen-fusing star that is hotter, more massive, and brighter than our Sun.


Planetary system

In 2007, Debra Fischer used radial velocity technique and found a Jupiter-like planet orbiting at 0.55 AU around the star.

The HD 231701 system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity
b >1.08 MJ 0.55 142 ± 2.8 0.19 ± 0.05

See also

* List of extrasolar planets


References

* Fischer et al.; Vogt, Steven S.; Marcy, Geoffrey W.; Butler, R. Paul; Sato, Bun’ei; Henry, Gregory W.; Robinson, Sarah; Laughlin, Gregory et al. (2007). "Five Intermediate-Period Planets from the N2K Sample". The Astrophysical Journal 669 (2): 1336–1344. doi:10.1086/521869. http://www.iop.org/EJ/article/0004-637X/669/2/1336/71774.html.


External links

* "HD 231701". The Extrasolar Planets Encyclopedia. http://exoplanet.eu/star.php?st=HD+231701.

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