Kepler-68d

{{Infobox planet

| name = Kepler-68d

| image =

| caption =

| apsis = astron

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| discovered = February 12, 2013

| discovery_method = Radial velocity

| alt_names =

| periastron = 1.148 AU

| apoastron = 1.652 AU

| semimajor = 1.4±0.03 AU{{cite web|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=May 27, 2010 |title=Kepler Discoveries |publisher=kepler.nasa.gov |access-date=February 26, 2013}}

| avg_speed =

| eccentricity = 0.18 ± 0.05

| period = 580±50 d

| inclination =

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| mean_radius =

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| mass = ≥0.947 Mj

| surface_grav =

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}}

Kepler-68d is a gas giant with a minimum mass about the same as Jupiter. It is at least a jovian-mass planet orbiting 1.4 astronomical units from its parent star, Kepler-68, well within the habitable zone of the star. It was detected by radial velocity.{{cite web|last=Exoplanet |title=Planet Kepler-68 d |url=http://voparis-exoplanet-new.obspm.fr/catalog/kepler-68_d/ |publisher=Exoplanet.eu |access-date=28 February 2013 |url-status=dead |archive-url=https://web.archive.org/web/20140216211114/http://voparis-exoplanet-new.obspm.fr/catalog/kepler-68_d/ |archive-date=16 February 2014 }}

After planets Kepler-68b and c were detected by observing planetary transits in front of its star, doppler spectroscopy measurements were used to make follow-up observations of the star. Kepler-68d was discovered using that method.