HD 13931 b

Last updated
HD 13931 b
Discovery [1]
Discovered by Howard et al.
Discovery site Keck Observatory
Discovery dateNovember 13, 2009
Radial velocity
Orbital characteristics [1] [2]
5.33 ± 0.09 AU (797,000,000 ± 13,000,000 km)
Eccentricity <0.04
4442+49
−46  d (12.16 y)
Average orbital speed
13.3 ± 2.2
Inclination 39°+13°
−8° or 141°+9°
−18°
343°+17°
−19° or 110°+19°
−24°
24494 ± 904
74 - 227
Semi-amplitude 22.8 ± 3.0
Star HD 13931
Physical characteristics [2]
Mass 3.1+0.8
−0.7  MJ

    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 million km. 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.

    In 2023, the inclination and true mass of HD 13931 b were measured via astrometry. [2]

    See also

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

    References

    1. 1 2 3 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.
    2. 1 2 3 Philipot, F.; Lagrange, A.-M.; et al. (January 2023). "Updated characterization of long-period single companion by combining radial velocity, relative astrometry, and absolute astrometry". Astronomy & Astrophysics. 670: A65. arXiv: 2301.01263 . Bibcode:2023A&A...670A..65P. doi:10.1051/0004-6361/202245396. S2CID   255393653.
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