HD 13931 b

HD 13931 b (also known as HIP 10626 b) is an extrasolar planet which orbits the G-type star HD 13931, located approximately 155 light years away in the constellation Andromeda. This planet takes 11.55 years to orbit the star at the average distance of 5.15 AU or 770 Gm. The planet's eccentricity (0.02) is about the same as Earth.[1] The orbital distance for this planet ranges from 5.05 to 5.25 AU. This planet was discovered by using radial velocity method from spectrograph taken at Keck Observatory on November 13, 2009.

HD 13931 b
Discovery
Discovered byHoward et al.
Discovery siteKeck Observatory
Discovery dateNovember 13, 2009
Radial velocity
Orbital characteristics
5.15 ± 0.29 AU (770,000,000 ± 43,000,000 km)
Eccentricity0.02 ± 0.05
4218 ± 388 d
~11.55 y
13.3 ± 2.2
24494 ± 904
290 ± 78
Semi-amplitude22.8 ± 3.0
StarHD 13931

    See also

    Other planets that were discovered or confirmed on November 13, 2009:

    References

    1. Howard, Andrew W.; et al. (2010). "The California Planet Survey. I. Four New Giant Exoplanets". The Astrophysical Journal. 721 (2): 1467–1481. arXiv:1003.3488. Bibcode:2010ApJ...721.1467H. doi:10.1088/0004-637X/721/2/1467. S2CID 14147776.


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