HD 89307 b

HD 89307 b
Discovery[1][2]
Discovered byButler et al.
Fischer et al.
Discovery siteUnited States
Discovery dateDecember 26, 2004
radial velocity
Orbital characteristics[3]
3.331+0.052
−0.053 AU
Eccentricity0.174+0.041
−0.043
2188+30
−28 d
5.991+0.081
−0.078 yr
16.6
Inclination72°+13°
−15° or 108°+15°
−13°
151+20
−133
2456758±96
22+320
−14
Semi-amplitude31.0 ± 4.9
StarHD 89307
Physical characteristics[3]
Mass2.02+0.27
−0.15 MJ

HD 89307 b is an exoplanet orbiting the star HD 89307 located approximately 104 light-years away in the constellation of Leo. The planet takes roughly 2164 days or 5.9 years to orbit its star. The planet's minimum mass is 1.92 MJ; initially, the true mass could not be determined since the inclination was unknown. As is common for many long-period exoplanets, the eccentricity is greater than any planets in the Solar System, orbiting at an average distance of 3.28 AU. The speed of the wobble caused by the planet's gravity is 31 meters per second. The average orbital velocity is 16.6 m/s.[1] In 2023, the inclination and true mass of HD 89307 b were determined via astrometry.[3]

  1. ^ a b Cite error: The named reference Butler2006 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Fischer2009 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Xiao2023 was invoked but never defined (see the help page).