Kepler-32
Kepler-32 is an M1V dwarf-type star located 1301.1 light years from Earth, in the constellation of Cygnus. Discovered in January 2012 by the Kepler spacecraft,[1] it shows a 0.58 ± 0.05 solar mass (M☉), a 0.53 ± 0.04 solar radius (R☉), and temperature of 3900.0 K, making it half the mass and radius of the Sun, two-thirds its temperature and 5% its luminosity.[2] It initially was known to have at least 2 planets orbiting around it, the smaller Kepler-32b, orbiting its parent star every 5.90124 days, and Kepler-32c with an orbital period of 8.7522 days.[3] In April 2013, transit-timing variation analysis confirmed 3 other planets to be in the system. However, only very loose constraints of the maximum mass of the planets could be determined.[4]
Planetary system
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| f | — | 0.013 | 0.742956 | — | — | 0.81±0.05 R⊕ |
| e | — | 0.033 | 2.896009 | — | — | 1.5±0.1 R⊕ |
| b | < 4.1 MJ | 0.05 | 5.90124 | — | — | 2.2±0.2 R⊕ |
| c | < 0.5 MJ | 0.09 | 8.7522 | — | — | 2.0±0.2 R⊕ |
| d | — | 0.129 | 22.780806 | — | — | 2.7±0.1 R⊕ |
References
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Coordinates: 
19h 51m 22s, +46° 34′ 27″
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- ↑ Transit Timing Observations from Kepler: IV. Confirmation of 4 Multiple Planet Systems by Simple Physical Models: Daniel C. Fabrycky, Eric B. Ford, Jason H. Steffen, Jason F. Rowe, Joshua A. Carter, Althea V. Moorhead, Natalie M. Batalha, William J. Borucki, Steve Bryson, Lars A. Buchhave, Jessie L. Christiansen, David R. Ciardi, William D. Cochran, Michael Endl, Michael N. Fanelli, Debra Fischer, Francois Fressin, John Geary, Michael R. Haas, Jennifer R. Hall, Matthew J. Holman, Jon M. Jenkins, David G. Koch, David W. Latham, Jie Li, Jack J. Lissauer, Philip Lucas, Geoffrey W. Marcy, Tsevi Mazeh, Sean McCauliff, Samuel Quinn, Darin Ragozzine, Dimitar Sasselov, Avi Shporer
- ↑ NASA Exoplanet Archive--Planet Host Overview page:Kepler-32
