Kepler-20c

{{Short description|Neptunian exoplanet orbiting Kepler-20}}

{{Infobox planet

| name = Kepler-20c

| discoverer = Kepler team

| discovered = 20 December 2011

| discovery_method = Transit (Kepler Mission)

| apsis = astron

| semimajor = {{convert|0.0930|AU|km|abbr=on}}

| eccentricity = <0.40

| period = {{val|10.854092}} d

| inclination = {{val|88.39|+0.16|-0.14}}

| star = Kepler-20 (KOI-070)

| mean_radius = {{val|3.07|+0.20|-0.31}} {{Earth radius|link=y}}

| mass = {{val|16.1|+3.3|-3.7}} {{Earth mass|link=y}}

| density = {{val|2.91|+0.85|-1.08}} g cm⁻³

| single_temperature = 713

}}

Kepler-20c is an exoplanet orbiting Kepler-20. It has a mass similar to Neptune but is slightly smaller. Despite being the third-closest planet to Kepler-20, it is still close to the star, meaning that it is a hot Neptune. Along with the other four planets in the system, Kepler-20c was announced on 20 December 2011.