HD 12661 c

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

{{Infobox planet

| name = HD 12661 c

| image = HD 12661 c (Celestia).jpg

| caption = The exoplanet HD 12661 c (min mass ~1.57 MJ)

| discoverer = Fischer et al.

| discovery_site = California & Carnegie
Planet Search
{{flag|USA}}

| discovered = April 1, 2003

| discovery_method = Radial velocity

| apsis = astron

| semimajor = {{convert|2.56|AU|km|abbr=on}}

| eccentricity = 0.031 ± 0.022

| period = 1708 ± 14 d

| time_periastron = 2,452,130 ± 330

| arg_peri = 38

| semi-amplitude = 29.27 ± 0.88

| star = HD 12661

}}

HD 12661 c is a giant exoplanet one and a half times the mass of Jupiter orbiting around HD 12661.