HD 4308 b

{{Short description|Exoplanet orbiting HD 4308 in the constellation of Tucana}}

{{Infobox planet

| name = HD 4308 b

|image=HD 4308 b Hot SuperEarth.png

|caption=Artist's conception

| discoverer = Udry et al.

| discovery_site = California, United States

| discovered = 22 August 2005

| discovery_method = Doppler Spectroscopy

| apsis = astron

| aphelion = {{convert|0.115|AU|km|abbr=on}}

| perihelion = {{convert|0.115|AU|km|abbr=on}}

| semimajor = {{convert|0.115|±|0.096|AU|km|abbr=on}}

| eccentricity = 0.00 ± 0.01

| period = 15.56 ± 0.02 d
0.04260 y

| time_periastron = 2,453,314.70
±2.0

| arg_peri = 359±47

| semi-amplitude = 4.07 ± 0.2

| star = HD 4308

| mass = >0.0442 {{Jupiter mass|link=y}}
(>14 {{Earth mass|sym=y|link=y}})

}}

HD 4308 b is a low-mass exoplanet orbiting around HD 4308. It is believed to have almost no orbital eccentricity.