Kepler-68c

{{Infobox planet

| name = Kepler-68c

| image = Kepler-68 c.jpg

| image_scale = 1.25

| caption = Artist's impression of Kepler-68 c and size comparison with Earth

| discovery_ref =

| discoverer = Gilliland et al.

| discovery_site = Kepler Space Observatory

| discovered = 2013

| discovery_method = Transits, and transit-timing variations

| alt_names = {{odlist | KOI=246.01 }}

| orbit_ref =

| semimajor = {{val|0.09059|0.00082|ul=AU}}

| eccentricity =

| period = {{val|9.605085|0.000072|u=days}}

| inclination = {{val|86.93|0.41|u=º}}

| semi-amplitude = {{val|0.59|0.50|0.52|ul=m/s}}

| star = Kepler-68

| physical_ref =

| mean_radius = {{val|0.953|0.037|0.042|ul=Earth radius}}

| mass = {{val|2.02|1.72|1.78|ul=Earth mass}}

}}

Kepler-68c is an Earth-sized planet orbiting the star Kepler-68 in the constellation of Cygnus. It was discovered by planetary-transit methods by the Kepler space telescope in February 2013. It has a mass of 4.8{{±|2.5|3.6}} times that of Earth (0.015 M_J) and a radius of 0.953{{±|0.037|0.042}} Earth radii. It has an orbital period of 9.605085 days at a distance of about 0.09059 AU from its star. Relatively wide constraints on Kepler-68c's mass are the result lack of detection of the planet through radial-velocity and transit-timing-variation methods.{{cite web|last=Nasa|title=Kepler Discoveries|url=http://kepler.nasa.gov/Mission/discoveries/|archive-url=https://web.archive.org/web/20100527104316/http://kepler.nasa.gov/Mission/discoveries/|url-status=dead|archive-date=27 May 2010|publisher=Nasa.gov|access-date=28 February 2013}}

References

{{reflist|refs=

{{cite journal | title=Kepler-68: Three Planets, One with a Density Between That of Earth and Ice Giants | last1=Gilliland | first1=Ronald L. | last2=Marcy | first2=Geoffrey W. | last3=Rowe | first3=Jason F. | last4=Rogers | first4=Leslie | last5=Torres | first5=Guillermo | last6=Fressin | first6=Francois | last7=Lopez | first7=Eric D. | last8=Buchhave | first8=Lars A. | last9=Christensen-Dalsgaard | first9=Jørgen | last10=Désert | first10=Jean-Michel | last11=Henze | first11=Christopher E. | last12=Isaacson | first12=Howard | last13=Jenkins | first13=Jon M. | last14=Lissauer | first14=Jack J. | last15=Chaplin | first15=William J. | last16=Basu | first16=Sarbani | last17=Metcalfe | first17=Travis S. | last18=Elsworth | first18=Yvonne | last19=Handberg | first19=Rasmus | last20=Hekker | first20=Saskia | last21=Huber | first21=Daniel | last22=Karoff | first22=Christoffer | last23=Kjeldsen | first23=Hans | last24=Lund | first24=Mikkel N. | last25=Lundkvist | first25=Mia | last26=Miglio | first26=Andrea | last27=Charbonneau | first27=David | last28=Ford | first28=Eric B. | last29=Fortney | first29=Jonathan J. | last30=Haas | first30=Michael R. | display-authors=1 | journal=The Astrophysical Journal | volume=766 | issue=1 | at=40 | year=2013 | arxiv=1302.2596 | bibcode=2013ApJ...766...40G | bibcode-access=free | doi=10.1088/0004-637X/766/1/40 | doi-access=free }}

{{cite journal | title=Long-period Giant Companions to Three Compact, Multiplanet Systems | last1=Mills | first1=Sean M. | last2=Howard | first2=Andrew W. | last3=Weiss | first3=Lauren M. | last4=Steffen | first4=Jason H. | last5=Isaacson | first5=Howard | last6=Fulton | first6=Benjamin J. | last7=Petigura | first7=Erik A. | last8=Kosiarek | first8=Molly R. | last9=Hirsch | first9=Lea A. | last10=Boisvert | first10=John H. | display-authors=1 | journal=The Astronomical Journal | volume=157 | issue=4 | at=145 | year=2019 | arxiv=1903.07186 | bibcode=2019AJ....157..145M | doi=10.3847/1538-3881/ab0899 | s2cid=119197547 | doi-access=free }}

}}{{Kepler-68}}

Category:Exoplanets discovered in 2013

68c

Category:Cygnus (constellation)

Category:Terrestrial planets

Category:Transiting exoplanets

Kepler-68c

See also

References