HD 13931 b

HD 13931 b
Discovery[1]
Discovered byHoward et al.
Discovery siteKeck 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)
13.3 ± 2.2
Inclination39°+13°
−8° or 141°+9°
−18°
343°+17°
−19° or 110°+19°
−24°
24494 ± 904
74 - 227
Semi-amplitude22.8 ± 3.0
StarHD 13931
Physical characteristics[2]
Mass3.1+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 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.

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

  1. ^ a b c Cite error: The named reference Howard2010 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Philipot2023 was invoked but never defined (see the help page).