Kepler-68
From Infogalactic: the planetary knowledge core
| Characteristics | |
|---|---|
| Spectral type | ?[1] |
| Astrometry | |
| Distance | 440 ly (135 pc) |
| Details | |
| Kepler-68 | |
| Mass | 1.079 M☉ |
| Radius | 1.243 R☉ |
| Temperature | 5793 K |
| Metallicity | 0.12 |
| Age | 6.3 Gyr |
| Other designations | |
Kepler-68 is a Sun-like main sequence star. It is known to have at least three planets orbiting around it. The outermost planet has a mass similar to Jupiter but orbits within the habitable zone.[2]
Planetary system
Currently, three planets have been discovered to orbit around Kepler-68. Two of the innermost planets were discovered by planetary transit method. Follow-up Doppler measurements helped to determine the mass of Kepler-68b and helped to discover Kepler-68d. [3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 5.9 M⊕ | 0.0617 | 5.398763 | - | 87.6° | 0.196 RJ |
| c | 0.015 MJ | 0.09059 | 9.605065 | - | 86.93° | 0.081 RJ |
| d | ≥0.87 MJ | 1.4 | 625±16 | 0.18 | — | - RJ |
References
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- ↑ Kepler-68: Three Planets, One With a Density Between That of Earth and Ice Giants: Ronald L. Gilliland, Geoffrey W. Marcy, Jason F. Rowe, Leslie Rogers, Guillermo Torres, Francois Fressin, Eric D. Lopez, Lars A. Buchhave, Joergen Christensen-Dalsgaard, Jean-Michel Desert, Howard Isaacson, Jon M. Jenkins, Jack L. Lissauer, William J. Chaplin, Sarbani Basu, Travis S. Metcalfe, Yvonne Elsworth, Rasmus Handberg, Saskia Hekker, Daniel Huber, Christoffer Karoff, Hans Kjeldsen, Mikkel N. Lund, Mia Lundkvist, Andrea Miglio, David Charbonneau, Eric B. Ford, Jonathan J. Fortney, Michael R. Haas, Andrew W. Howard, Steve B. Howell, Darin Ragozzine, Susan E. Thompson
- ↑ http://astro.berkeley.edu/~gmarcy/22kois.pdf
