K2-3b

{{Infobox planet

| name = K2-3b

| discovery_ref =

| discovery_site = Kepler Space Observatory

| discovered = 2015

| discovery_method = Transit

| orbit_ref =

| apsis = astron

| semimajor = {{val|0.0747|0.0013|0.0012|ul=AU}}

| eccentricity = {{val|0.107|0.057|0.059}}

| period = {{val|10.0546535|0.0000088|0.0000091|ul=d}}

| inclination = {{val|89.40|0.34|0.22|u=deg}}

| arg_peri = {{val|188|32|34|u=deg}}

| semi-amplitude = {{val|2.27|0.28|ul=m/s}}

| star = K2-3

| physical_ref =

| mean_radius = {{val|2.078|0.076|0.067|ul=Earth radius}}

| mass = {{val|5.11|0.65|0.64|ul=Earth mass}}

| density = {{val|3.11|0.49|0.46|ul=g/cm3}}

| single_temperature = {{val|501.3|5.1|5.2|ul=K}} ({{convert|501.3|K|C F|disp=out}}, equilibrium)

}}

K2-3b, also known as EPIC 201367065 b, is an exoplanet orbiting the red dwarf K2-3 every 10 days.{{Cite web|url=https://exoplanet.eu/catalog/k2_3_b--2361/|work=Extrasolar Planets Encyclopaedia|title = The Extrasolar Planet Encyclopaedia — K2-3 b}} It is the largest and most massive planet of the K2-3 system, with about 2.1 times the radius of Earth and about 5 times the mass. Its density of about 3.1 g/cm³ may indicate a composition of almost entirely water, or a hydrogen envelope comprising about 0.7% of the planet's mass.

References

{{reflist|refs=

{{cite web

| url=http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=K2-3+b&type=CONFIRMED_PLANET

| title=K2-3 b CONFIRMED PLANET OVERVIEW PAGE

| work=NASA Exoplanet Archive

| accessdate=2015-10-17

}}

{{cite journal | title=A Nearby M Star with Three Transiting Super-Earths Discovered by K2 | last1=Crossfield | first1=Ian J. M. | last2=Petigura | first2=Erik | last3=Schlieder | first3=Joshua E. | last4=Howard | first4=Andrew W. | last5=Fulton | first5=B. J. | last6=Aller | first6=Kimberly M. | last7=Ciardi | first7=David R. | last8=Lépine | first8=Sébastien | last9=Barclay | first9=Thomas | last10=Pater | first10=Imke de | last11=Kleer | first11=Katherine de | last12=Quintana | first12=Elisa V. | last13=Christiansen | first13=Jessie L. | last14=Schlafly | first14=Eddie | last15=Kaltenegger | first15=Lisa | last16=Crepp | first16=Justin R. | last17=Henning | first17=Thomas | last18=Obermeier | first18=Christian | last19=Deacon | first19=Niall | last20=Weiss | first20=Lauren M. | last21=Isaacson | first21=Howard T. | last22=Hansen | first22=Brad M. S. | last23=Liu | first23=Michael C. | last24=Greene | first24=Tom | last25=Howell | first25=Steve B. | last26=Barman | first26=Travis | last27=Mordasini | first27=Christoph | display-authors=1 | journal=The Astrophysical Journal | volume=804 | issue=1 | article-number=10 | page= | year=2015 | arxiv=1501.03798 | bibcode=2015ApJ...804...10C | bibcode-access=free | doi=10.1088/0004-637X/804/1/10 | doi-access=free }}

{{cite journal | title=Eyes on K2-3: A system of three likely sub-Neptunes characterized with HARPS-N and HARPS | last=Damasso | first=M. | last2=Bonomo | first2=A. S. | last3=Astudillo-Defru | first3=N. | last4=Bonfils | first4=X. | last5=Malavolta | first5=L. | last6=Sozzetti | first6=A. | last7=Lopez | first7=E. | last8=Zeng | first8=L. | last9=Haywood | first9=R. D. | last10=Irwin | first10=J. M. | last11=Mortier | first11=A. | last12=Vanderburg | first12=A. | last13=Maldonado | first13=J. | last14=Lanza | first14=A. F. | last15=Affer | first15=L. | last16=Almenara | first16=J.-M. | last17=Benatti | first17=S. | last18=Biazzo | first18=K. | last19=Bignamini | first19=A. | last20=Borsa | first20=F. | last21=Bouchy | first21=F. | last22=Buchhave | first22=L. A. | last23=Cameron | first23=A. C. | last24=Carleo | first24=I. | last25=Charbonneau | first25=D. | last26=Claudi | first26=R. | last27=Cosentino | first27=R. | last28=Covino | first28=E. | last29=Delfosse | first29=X. | last30=Desidera | first30=S. | last31=Di Fabrizio | first31=L. | last32=Dressing | first32=C. | last33=Esposito | first33=M. | last34=Fares | first34=R. | last35=Figueira | first35=P. | last36=Fiorenzano | first36=A. F. M. | last37=Forveille | first37=T. | last38=Giacobbe | first38=P. | last39=González-Álvarez | first39=E. | last40=Gratton | first40=R. | last41=Harutyunyan | first41=A. | last42=Johnson | first42=J. Asher | last43=Latham | first43=D. W. | last44=Leto | first44=G. | last45=Lopez-Morales | first45=M. | last46=Lovis | first46=C. | last47=Maggio | first47=A. | last48=Mancini | first48=L. | last49=Masiero | first49=S. | last50=Mayor | first50=M. | last51=Micela | first51=G. | last52=Molinari | first52=E. | last53=Motalebi | first53=F. | last54=Murgas | first54=F. | last55=Nascimbeni | first55=V. | last56=Pagano | first56=I. | last57=Pepe | first57=F. | last58=Phillips | first58=D. F. | last59=Piotto | first59=G. | last60=Poretti | first60=E. | last61=Rainer | first61=M. | last62=Rice | first62=K. | last63=Santos | first63=N. C. | last64=Sasselov | first64=D. | last65=Scandariato | first65=G. | last66=Ségransan | first66=D. | last67=Smareglia | first67=R. | last68=Udry | first68=S. | last69=Watson | first69=C. | last70=Wünsche | first70=A. | display-authors=1 | journal=Astronomy & Astrophysics | volume=615 | article-number=A69 | pages= | date=2018 | arxiv=1802.08320 | bibcode=2018A&A...615A..69D | bibcode-access=free | doi=10.1051/0004-6361/201732459 | doi-access=free }}

{{cite journal | title=The K2-3 System Revisited: Testing Photoevaporation and Core-powered Mass Loss with Three Small Planets Spanning the Radius Valley | last=Diamond-Lowe | first=Hannah | last2=Kreidberg | first2=Laura | last3=Harman | first3=C. E. | last4=Kempton | first4=Eliza M.-R. | last5=Rogers | first5=Leslie A. | last6=Joyce | first6=Simon R. G. | last7=Eastman | first7=Jason D. | last8=King | first8=George W. | last9=Kopparapu | first9=Ravi | last10=Youngblood | first10=Allison | last11=Kosiarek | first11=Molly R. | last12=Livingston | first12=John H. | last13=Hardegree-Ullman | first13=Kevin K. | last14=Crossfield | first14=Ian J. M. | display-authors=1 | journal=The Astronomical Journal | volume=164 | issue=5 | page= | article-number=172 | date=2022-11-01 | arxiv=2207.12755 | bibcode=2022AJ....164..172D | bibcode-access=free | doi=10.3847/1538-3881/ac7807 | doi-access=free }}

}}

Category:Exoplanets discovered in 2015

Category:Transiting exoplanets

Category:K2-3

Category:Leo (constellation)