Kepler-68d is a gas giant with the 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 habitable zone of the star.[2] It was detected by radial velocity.[3]

Kepler-68d
Discovery
Discovery dateFebruary 12, 2013
Radial velocity
Orbital characteristics
Periastron1.148 AU
Apoastron1.652 AU
1.4±0.03 AU[1]
Eccentricity0.18 ± 0.05
580±50 d
Physical characteristics
Mass≥0.947 Mj

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.

ReferencesEdit

  1. ^ "Kepler Discoveries". kepler.nasa.gov. Archived from the original on May 27, 2010. Retrieved February 26, 2013.
  2. ^ Gilliland, Ronald L.; et al. (2013). "Kepler-68: Three Planets, One with a Density Between That of Earth and Ice Giants". The Astrophysical Journal. 766 (1). 40. arXiv:1302.2596. Bibcode:2013ApJ...766...40G. doi:10.1088/0004-637X/766/1/40. S2CID 7203273.
  3. ^ Exoplanet. "Planet Kepler-68 d". Exoplanet.eu. Archived from the original on 16 February 2014. Retrieved 28 February 2013.

External linksEdit