| HD 142022 Ab | |
| Discoverer: | Eggenberger et al. |
| Discovery Site: | La Silla Observatory |
| Discovered: | 14 February 2005 |
| Discovery Method: | Radial Velocity (CORALIE) |
| Apsis: | astron |
| Period: | |
| Inclination: | or |
| Avg Speed: | 16.6 |
| Semi-Amplitude: | 92 ± 65 |
| Star: | HD 142022 A |
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%. In 2023, the inclination and true mass of HD 142022 Ab were determined via astrometry.