Astronomy:Kepler-68c
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| Discovery[1] | |
|---|---|
| Discovered by | Gilliland et al. |
| Discovery site | Kepler Space Observatory |
| Discovery date | 2013 |
| Transits, and transit-timing variations | |
| Designations | |
| KOI-246.01[2] | |
| Orbital characteristics[3][1] | |
| 0.09059±0.00082 astronomical unit|AU | |
| Orbital period | 9.605085±0.000072 d |
| Inclination | 86.93±0.41 º |
| Semi-amplitude | 0.59+0.50 −0.52 m/s |
| Star | Kepler-68 |
| Physical characteristics[3] | |
| Mean radius | 0.953+0.037 −0.042 R⊕ |
| Mass | 2.02+1.72 −1.78 M⊕ |
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 MJ)[1] 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.[4]
See also
- List of planets discovered by the Kepler spacecraft
References
- ↑ 1.0 1.1 1.2 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. doi:10.1088/0004-637X/766/1/40. Bibcode: 2013ApJ...766...40G.
- ↑ "Kepler-68b". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-68b.
- ↑ 3.0 3.1 Mills, Sean M. et al. (2019). "Long-period Giant Companions to Three Compact, Multiplanet Systems". The Astronomical Journal 157 (4): 145. doi:10.3847/1538-3881/ab0899. Bibcode: 2019AJ....157..145M.
- ↑ Nasa. "Kepler Discoveries". Nasa.gov. http://kepler.nasa.gov/Mission/discoveries/.
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