Kepler-27
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 28m 56.81962s |
| Declination | +41° 05′ 09.1405″ |
| Apparent magnitude (V) | 15.855 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | K2 III-IV |
| Astrometry | |
| Proper motion (μ) | RA: 2.171±0.033 mas/yr Dec.: −0.324±0.031 mas/yr |
| Parallax (π) | 0.9298±0.0281 mas |
| Distance | 3,500 ± 100 ly (1,080 ± 30 pc) |
| Details | |
| Mass | 0.9+0.03 −0.10 M☉ |
| Radius | 0.850+0.017 −0.016 R☉ |
| Luminosity | 0.45 L☉ |
| Surface gravity (log g) | 4.58 cgs |
| Temperature | 5,249+68 −56 K |
| Metallicity [Fe/H] | 0.250+0.064 −0.061 dex |
| Rotation | 14.7 days |
| Rotational velocity (v sin i) | 0.6±5.0 km/s |
| Age | 1.620+0.978 −0.466 Gyr |
| Other designations | |
| KOI-841, KIC 5792202, 2MASS J19285682+4105091, Gaia DR2 2053586321364864640 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| KIC | data |
Kepler-27 is a star in the northern constellation of Cygnus, the swan. It is located at the celestial coordinates: Right Ascension 19h 28m 56.81962s, Declination +41° 05′ 09.1405″. With an apparent visual magnitude of 15.855, this star is too faint to be seen with the naked eye. In 2024, Kepler-27 was discovered to be a binary star with a red dwarf companion 1.975 arcseconds away.