| HD 88133 b | |
| Discoverer: | Fischer, Laughlin, Butler et al. |
| Discovery Site: | California |
| Discovered: | September 6, 2004 |
| Discovery Method: | Radial velocity (N2K Consortium) |
| Apsis: | astron |
| Semimajor: | AU |
| Eccentricity: | 0 (fixed) |
| Period: | d |
HD 88133 b is an extrasolar planet orbiting the star HD 88133. It is probably less massive than Jupiter and even Saturn. It orbits the star in a very tight orbit, completing one revolution around the star in every three and half days or so. Despite the relatively large radius of the star (about 2 times Solar), no transits have been detected.
In 2016 the direct detection of the planetary thermal emission spectrum was claimed, but the detection was questioned in 2021.