Kepler-1638
Constellation where Kepler-1638 is located | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 41m 55.76712s |
| Declination | +48° 31′ 27.9998″ |
| Apparent magnitude (V) | 14.769±0.206 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | G |
| Apparent magnitude (J) | 13.550±0.023 |
| Apparent magnitude (H) | 13.204±0.024 |
| Apparent magnitude (K) | 13.138±0.035 |
| Variable type | Planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: −5.092 mas/yr Dec.: +5.839 mas/yr |
| Parallax (π) | 0.6462±0.0165 mas |
| Distance | 5,000 ± 100 ly (1,550 ± 40 pc) |
| Details | |
| Mass | 1.03 M☉ |
| Radius | 1.62 R☉ |
| Luminosity | 2.59 L☉ |
| Surface gravity (log g) | 4.03 cgs |
| Temperature | 5,745 K |
| Metallicity [Fe/H] | −0.76+0.32 −0.26 dex |
| Rotation | 27.7 days |
| Rotational velocity (v sin i) | 2.25 km/s |
| Age | 5.7+5.1 −2.6 Gyr |
| Other designations | |
| KOI-5856, KIC 11037818, 2MASS J19415577+4831280 | |
| Database references | |
| SIMBAD | data |
Kepler-1638 is a G-type subgiant star located about 5,000 light years away in the constellation of Cygnus. One known exoplanet has been found orbiting the star: Kepler-1638b.As of January 2021, Kepler-1638 is the farthest star with a known exoplanet orbiting in the habitable zone.