Kepler-28
A diagram of the Kepler-28 System, compared to our Inner Solar System. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 28m 32.887s |
| Declination | +42° 25′ 45.91″ |
| Apparent magnitude (V) | 15.306[2] |
| Characteristics | |
| Spectral type | G5[3] |
| Astrometry | |
| Distance | 1989[3] ly (610 pc) |
| Details | |
| Mass | 0.75[2] M☉ |
| Radius | 0.70[2] R☉ |
| Luminosity | [2] L☉ |
| Temperature | 4590[2] K |
| Metallicity [Fe/H] | 0.34[2] dex |
| Rotational velocity (v sin i) | 0.6[2] km/s |
| Other designations | |
Kepler-28 is a star in the northern constellation of Cygnus, the swan, that is orbited by a planet found to be unequivocally within the star's habitable zone. It is located at the celestial coordinates: Right Ascension 19h 28m 32.887s}, Declination +42° 25′ 45.91″.[4] With an apparent visual magnitude of 15.036,[2] this star is too faint to be seen with the naked eye.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.51 MJ | 0.062 | 5.9123 | — | — | — |
| c | 1.36 MJ | 0.081 | 8.9858 | — | — | — |
References
- ↑ "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
- 1 2 3 4 5 6 7 8 Kepler-28b, NASA Ames Research Center, retrieved 2011-12-06
- 1 2 3 Schneider, Jean, "Star: Kepler-28", Extrasolar Planets Encyclopaedia (Paris Observatory), retrieved 2011-12-06
- ↑ "Kepler Discoveries". 2011-12-05.
Coordinates: 
19h 28m 32.887s, +42° 25′ 45.91″
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