HD 13931 b

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HD 13931 b
Exoplanet List of exoplanets
Parent star
Star HD 13931
Constellation Andromeda
Right ascension (α) 02h 16m 47.38s[1]
Declination (δ) +43° 46′ 22.8″[1]
Distance 144 ± 4[1] ly
(44 ± 1[1] pc)
Spectral type G0
Mass (m) 1.02 ± 0.02 M
Radius (r) 1.23 ± 0.06 R
Temperature (T) 5829 ± 44 K
Metallicity [Fe/H] 0.03 ± 0.04
Age 8.4 ± 2.0 Gyr
Orbital elements
Semi-major axis (a) 5.15 ± 0.29 AU
(~770 Gm)
    ~116 mas
Periastron (q) 5.05 ± 0.43 AU
(~756 Gm)
Apastron (Q) 5.25 ± 0.46 AU
(~785 Gm)
Eccentricity (e) 0.02 ± 0.05
Orbital period (P) 4218 ± 388 d
(~11.55 y)
Orbital speed (υ) 13.3 ± 2.2 km/s
Argument of
periastron
(ω) 290 ± 78°
Time of periastron (T0) 24494 ± 904 JD
Semi-amplitude (K) 22.8 ± 3.0 m/s
Physical characteristics
Minimum mass (m sin i) 1.88 ± 0.15 MJ
Discovery information
Discovery date November 13, 2009
Discoverer(s) Howard et al.
Discovery method Radial velocity
Discovery site Keck Observatory
Discovery status Submitted[2]
Other designations
BD+43°459 b, HIP 10626 b
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 13931 b (also known as HIP 10626 b) is an extrasolar planet which orbits the G-type star HD 13931, located approximately 144 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.[2] 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.

See also[edit]

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

References[edit]

  1. ^ a b c d van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b 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. 

Coordinates: Sky map 02h 16m 47.3791s, +43° 46′ 22.784″