Kepler-442
Kepler-442 is a K-type main-sequence star approximately 1,196 light years from Earth in the constellation Lyra. It is located within the field of vision of the Kepler spacecraft, the satellite that NASA's Kepler Mission used to detect planets that may be transiting their stars. On January 6, 2015, along with the notable stars of Kepler-438 and Kepler-440, it was announced that the star has an extrasolar planet (a super-Earth) orbiting within the habitable zone, named Kepler-442b.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 19h 01m 27.9743s |
| Declination | +39° 16′ 48.224″ |
| Apparent magnitude (V) | 14.976 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | K5V |
| Astrometry | |
| Proper motion (μ) | RA: 7.784(18) mas/yr Dec.: 1.882(19) mas/yr |
| Parallax (π) | 2.7269 ± 0.0165 mas |
| Distance | 1,196 ± 7 ly (367 ± 2 pc) |
| Absolute magnitude (MV) | 7.73+0.28 −0.25 |
| Details | |
| Mass | 0.61 ± 0.03 M☉ |
| Radius | 0.60 ± 0.02 R☉ |
| Luminosity (bolometric) | 0.117 L☉ |
| Luminosity (visual, LV) | 0.069 L☉ |
| Temperature | 4402 ± 100 K |
| Metallicity [Fe/H] | −0.37 ± 0.10 dex |
| Age | 2.9+8.1 −0.2 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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