HIP 5158 b

{{Short description|Extrasolar planet in the constellation Cetus}}

{{Infobox planet

| name = 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 = {{convert|0.89|AU|km|abbr=on}}

| 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

| star = HIP 5158

}}

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.