HD 142022 Ab

HD 142022 Ab
Discovery[1]
Discovered byEggenberger et al.
Discovery siteLa Silla Observatory
Discovery date14 February 2005
Radial Velocity
(CORALIE)
Orbital characteristics[2]
2.939±0.062 AU
Eccentricity0.506+0.071
−0.06
1935+30
−27 d
5.297+0.082
−0.073 yr
16.6
Inclination71°±13° or 109°±13°
141°±19°
2456730+50
−44
168.5°+4.1°
−5.0°
Semi-amplitude92 ± 65
StarHD 142022 A
Physical characteristics[2]
Mass4.51+0.91
−0.61 MJ

HD 142022 Ab is an exoplanet discovered by the radial velocity method by Eggenberger et al. in 2005, after finding that HD 142022 A is wobbling which indicated the presence of a massive planet, with a minimum mass 4.5 times Jupiter. It has a relatively wide separation between the planet and the star of nearly 3 AU, and takes 1928 days or 5.28 years to revolve. As is common for long-period planets, it has a relatively high eccentricity of 53±20%.[1] In 2023, the inclination and true mass of HD 142022 Ab were determined via astrometry.[2]

  1. ^ a b Cite error: The named reference Eggenberger2006 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Xiao2023 was invoked but never defined (see the help page).