Kepler-186
Kepler-186 is a main-sequence M1-type dwarf star, located 178.5 parsecs (582 light years) away in the constellation of Cygnus. The star is slightly cooler than the sun, with roughly half its metallicity. It is known to have five planets, including the first Earth-sized world discovered in the habitable zone: Kepler-186f. The star hosts four other planets discovered so far, though they all orbit interior to the habitable zone.
Kepler-186 is indicated by the red circle (2MASS J band image) | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 54m 36.6536s |
| Declination | +43° 57′ 18.0259″ |
| Apparent magnitude (V) | 15.29 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | M1V |
| Astrometry | |
| Proper motion (μ) | RA: 2.099±0.041 mas/yr Dec.: −4.361±0.042 mas/yr |
| Parallax (π) | 5.6020 ± 0.0244 mas |
| Distance | 579.23 ly (177.59 pc) |
| Details | |
| Mass | 0.544 ± 0.02 M☉ |
| Radius | 0.523 ± 0.02 R☉ |
| Luminosity (bolometric) | 0.055 +0.011 −0.006 L☉ |
| Temperature | 3755 ± 90 K |
| Metallicity [Fe/H] | −0.26 ± 0.12 dex |
| Rotation | 34.404±0.075 days |
| Age | 4.0 ± 0.6 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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