Kepler-23c

{{Infobox planet

| name = Kepler-23c

| discoverer = Eric B. Ford et al.{{cite journal|bibcode=2012ApJ...750..113F|arxiv=1201.5409|doi=10.1088/0004-637X/750/2/113|title=Transit Timing Observations Fromkepler. Ii. Confirmation of Two Multiplanet Systems Via a Non-Parametric Correlation Analysis|journal=The Astrophysical Journal|volume=750|issue=2|pages=113|year=2012|last1=Ford|first1=Eric B.|last2=Fabrycky|first2=Daniel C.|last3=Steffen|first3=Jason H.|last4=Carter|first4=Joshua A.|last5=Fressin|first5=Francois|last6=Holman|first6=Matthew J.|last7=Lissauer|first7=Jack J.|last8=Moorhead|first8=Althea V.|last9=Morehead|first9=Robert C.|last10=Ragozzine|first10=Darin|last11=Rowe|first11=Jason F.|last12=Welsh|first12=William F.|last13=Allen|first13=Christopher|last14=Batalha|first14=Natalie M.|last15=Borucki|first15=William J.|last16=Bryson|first16=Stephen T.|last17=Buchhave|first17=Lars A.|last18=Burke|first18=Christopher J.|last19=Caldwell|first19=Douglas A.|last20=Charbonneau|first20=David|last21=Clarke|first21=Bruce D.|last22=Cochran|first22=William D.|last23=Désert|first23=Jean-Michel|last24=Endl|first24=Michael|last25=Everett|first25=Mark E.|last26=Fischer|first26=Debra A.|last27=Gautier|first27=Thomas N.|last28=Gilliland|first28=Ron L.|last29=Jenkins|first29=Jon M.|last30=Haas|first30=Michael R.|s2cid=4528963 |display-authors=29}}

| discovered = 25 January 2012

| discovery_method = Transit method

| apsis = astron

| semimajor = {{convert|0.099|AU|km|abbr=on}}

| eccentricity = {{val|0.02|+0.39|-0.02}}{{cite journal|bibcode=2015ApJ...808..126V|doi=10.1088/0004-637X/808/2/126|arxiv=1505.02814|title=Eccentricity from Transit Photometry: Small Planets in Kepler Multi-Planet Systems Have Low Eccentricities|journal=The Astrophysical Journal|volume=808|issue=2|pages=126|year=2015|last1=Van Eylen|first1=Vincent|last2=Albrecht|first2=Simon|s2cid=14405731 }}

| period = 10.742434(39) d

| star = Kepler-23

| mean_radius = 3.12 ± 0.10 {{Earth radius|link=y}}

| mass = {{val|0.189|-0.033|+0.036}}{{cite encyclopedia|title=Kepler-23 c|url=https://exoplanet.eu/catalog/kepler_23_c--1072/|encyclopedia=Extrasolar Planets Encyclopaedia|access-date=26 June 2017}} {{Jupiter mass|link=y}}

}}

File:Kepler-23_c.jpg

Kepler-23c is a Neptune-sized exoplanet orbiting the star Kepler-23, located in the constellation Cygnus. The planet is 3.12 times wider than the Earth and is 0.189 Jupiter masses. The planet was discovered using data taken from the Kepler space telescope. It is likely a gas giant. The planets Kepler-23b and d both reside in the same planetary system.