- HD 159868
Starbox short
name = HD 159868
constell =Scorpius
ra = RA|17|38|59.526
dec = DEC|-43|08|43.85
appmag_v = +7.24
absmag_v =
dist_ly = 171.93
dist_pc = 52.71
class = G5V
names = CD -43º 11901, GC 23898, GCRV 67207, GJ 4014, HD 159868, HIP 86375, SAO 228234
Simbad = HD+159868HD 159868 is a
yellow dwarf star approximately 172light-year s away in theconstellation ofScorpius . The star is thought to be 3.05 times as luminous than theSun , yet with themetallicity is identical to the Sun. As of 2007, anextrasolar planet has been confirmed to be orbiting the star.cite journal | url=http://www.journals.uchicago.edu/doi/abs/10.1086/513563 | author=O'Toole "et al." | title=New Planets around Three G Dwarfs | journal=TheAstrophysical Journal | volume=660 | issue=2 | year=2007 | pages=1636 – 1641 | doi=10.1086/513563 ( [http://xxx.lanl.gov/abs/astro-ph/0702213 web Preprint] )]Planetary system
In 2007, an
extrasolar planet was announced by astronomerSimon J. O'Toole , to be orbiting the star. The planet (designatedHD 159868 b ) is likely to be agas giant . The orbit is extremely eccentric at the average distance of 2astronomical unit s (AU), ranging as close as 0.62 AU to as far as 3.38 AU. During its orbital period, the planet spends most of its time in thehabitable zone of its star.OrbitboxPlanet
exoplanet = b
mass = >1.7 ± 0.3
semimajor = 2 ± 0.3
period = 986 ± 9
eccentricity = 0.69 ± 0.02See also
*
HD 219828
*HD 28185
*List of stars with confirmed extrasolar planets References
External links
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