Kepler-25
A diagram of the Kepler-25 System, compared to our Inner Solar System. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra[1] |
| Right ascension | 19h 06m 33.2204s |
| Declination | +39° 29′ 16.321″ |
| Apparent magnitude (V) | 10.7[2] |
| Characteristics | |
| Spectral type | F[3] |
| Astrometry | |
| Distance | 782.7[3] ly (240 pc) |
| Details | |
| Mass | 1.22[2] M☉ |
| Radius | 1.36[2] R☉ |
| Luminosity | 1.36[2] L☉ |
| Temperature | 6190[2] K |
| Metallicity [Fe/H] | 0.01[2] dex |
| Rotational velocity (v sin i) | 11.2[2] km/s |
| Other designations | |
Kepler-25 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension 19h 06m 33.2204s Declination +39° 29′ 16.321″ 19h 21m 39.0s,.[4] With an apparent visual magnitude of 10.7,[2] this star is too faint to be seen with the naked eye.
In 2012, two planets were found transiting the star. These planets were confirmed through transit-timing variation method. A third planet was discovered through follow-up radial velocity measurements which was confirmed in January 2014.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | <12.7 MJ | 0.068 | 6.2385 | — | — | 2.58 R⊕ |
| c | <4.16 MJ | 0.11 | 12.7204 | — | — | 4.48 R⊕ |
| d | 0.283 MJ | — | 123 | — | — | — |
References
- ↑ "Lyra – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
- 1 2 3 4 5 6 7 8 Kepler-25b, NASA Ames Research Center, retrieved 2011-12-06
- 1 2 3 Schneider, Jean, "Star: Kepler-25", Extrasolar Planets Encyclopaedia, Paris Observatory, retrieved 2013-12-18
- ↑ "Kepler Discoveries". 2011-12-05.
Coordinates: 
19h 06m 33.2204s, +39° 29′ 16.321″
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