Kepler-182
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 19m 19.239s |
| Declination | +50° 35′ 10.44″ |
| Apparent magnitude (V) | 14.9 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | F3 |
| Astrometry | |
| Proper motion (μ) | RA: −7.566 mas/yr Dec.: −7.217 mas/yr |
| Parallax (π) | 0.6117±0.0167 mas |
| Distance | 5,300 ± 100 ly (1,630 ± 40 pc) |
| Details | |
| Mass | 1.07 M☉ |
| Radius | 1.43 R☉ |
| Luminosity | 2.21 L☉ |
| Surface gravity (log g) | 4.16 cgs |
| Temperature | 5,883 K |
| Metallicity [Fe/H] | 0.07 dex |
| Rotation | 44 days |
| Rotational velocity (v sin i) | 3.6 km/s |
| Age | 5.0 Gyr |
| Other designations | |
| KOI-546, KIC 12058931, 2MASS J19191922+5035104 | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-182 is a star in the constellation of Cygnus. The star is notable for having two planets in the circumstellar habitable zone.
With a mass the same as the Sun's and an age of five billion years, Kepler-182 has exhausted its core hydrogen and expanded away from the main sequence. It is now a subgiant contracting towards the red giant branch. It has a radius of 1.4 R☉ and an effective temperature of 5,883 K, giving a bolometric luminosity of 2.2 L☉.
Two exoplanets orbit it. The first, Kepler-182b, has a radius of 0.23 RJ and orbits the parent star every 9.8 days. The second, Kepler-182c, has a radius of 0.306 RJ and orbits the parent star every 20.7 days.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | — | 0.096 | 9.825792 ± 0.000062 | — | — | 0.23 ± 0.105 RJ |
| c | — | 0.157 | 20.684342 ± 0.000097 | — | — | 0.306 ± 0.136 RJ |