| HIP 5158 b | |
| Discoverer: | Lo Curto et al. |
| Discovery Site: | La Silla Observatory |
| Discovered: | October 19, 2009 |
| Discovery Method: | radial velocity (HARPS) |
| Apsis: | astron |
| Semimajor: | 0.89AU |
| Eccentricity: | 0.52 ± 0.08 |
| Period: | 345.72 ± 5.37 d |
| Time Periastron: | 2,454,580.49 ± 15.21 |
| Arg Peri: | −108 ± 11 |
| Semi-Amplitude: | 57 ± 11 |
HIP 5158 b is an extrasolar planet which orbits the K-type main sequence star HIP 5158, located approximately 130 light years away in the constellation Cetus. This planet was detected by HARPS on October 19, 2009, together with 29 other planets.