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HD 168443

HD 168443 is a yellow dwarf star of (spectral type G5) about the mass of our Sun. It is in the constellation of Serpens Cauda, 123 light years from our solar system. It is known to be orbited by one large planet and a brown dwarf. The brown dwarf takes 30 times longer to orbit the star than the gas giant planet. [1][2]

The HD 168443 system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity
b >7.2 ± 0.4 MJ 0.29 58.116 ± 0.001 0.529 ± 0.02
c 34 ± 12 MJ 2.87 1739.5 ± 3.8 0.228 ± 0.005

See also

* HD 38529
* List of extrasolar planets


References

1. ^ Marcy et al.; Butler, R. Paul; Vogt, Steven S.; Liu, Michael C.; Laughlin, Gregory; Apps, Kevin; Graham, J. R.; Lloyd, J. et al. (2001). "Two Substellar Companions Orbiting HD 168443". The Astrophysical Journal 555 (1): 418–425. doi:10.1086/321445. http://www.iop.org/EJ/article/0004-637X/555/1/418/53197.html.
2. ^ Reffert, S., Quirrenbach, A. (2006). "Hipparcos astrometric orbits for two brown dwarf companions: HD 38529 and HD 168443" (PDF). Astronomy and Astrophysics 449 (2): 699–702. doi:10.1051/0004-6361:20054611. https://openaccess.leidenuniv.nl/bitstream/1887/7483/1/A&A_449_699_702.pdf.


External links

* "Notes for star HD 168443". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/star.php?st=HD+168443. Retrieved 2008-09-08.
* "HD 168443". Extrasolar Visions. http://www.extrasolar.net/planettour.asp?StarCatId=normal&StarId=16. Retrieved 2008-09-08.

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