Kepler-23b

{{Short description|Exoplanet}}

{{Infobox planet

| name = Kepler-23b

| discoverer = Kepler team

| discovered = 30 January 2012

| discovery_method = Transit (Kepler Mission)

| apsis = astron

| semimajor = {{convert|0.075|AU|km|abbr=on}}

| period = 7.106995 d{{citation|arxiv=1505.02814|year=2015|doi=10.1088/0004-637X/808/2/126|last1=Van Eylen|first1=Vincent|last2=Albrecht|first2=Simon|title=Eccentricity from Transit Photometry: Small Planets in Kepler Multi-Planet Systems Have Low Eccentricities |journal=The Astrophysical Journal|volume=808|issue=2|page=126|bibcode=2015ApJ...808..126V |s2cid=14405731}}

| star = Kepler-23

| mean_radius = 1.9 {{Earth radius|link=y}}

}}

Kepler-23b is an exoplanet orbiting Kepler-23, located in the Cygnus constellation. The exoplanet was discovered with the Kepler space telescope in January 2012.{{cite web|title=Planet Kepler-23 b|url=https://exoplanet.eu/catalog/kepler_23_b--1071/|work=Extrasolar Planets Encyclopaedia|access-date=1 May 2014}}

The planet is bigger than Earth, and its orbit is very close to its parent star.{{cite web|title=Kepler-23b|url=http://kepler.nasa.gov/Mission/discoveries/kepler23b/|archive-url=https://web.archive.org/web/20120503230940/http://kepler.nasa.gov/Mission/discoveries/kepler23b/|url-status=dead|archive-date=3 May 2012|publisher= NASA Ames Research Center|access-date=1 May 2014}} Orbital periods are 7.1 days and it presents a semi-major axis 0.099 AU.