 Artist's impression of the Kepler-452 and Kepler-186 systems compared to the inner Solar System, with their respective habitable zones shown. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 44m 00.8861s[1] |
| Declination | +44° 16′ 39.171″[1] |
| Apparent magnitude (V) | 13.426[2] |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G2V[3] |
| Astrometry | |
| Proper motion (μ) | RA: 9.987(13) mas/yr[1] Dec.: 8.943(14) mas/yr[1] |
| Parallax (π) | 1.8053 ± 0.0103 mas[1] |
| Distance | 1,810 ± 10 ly (554 ± 3 pc) |
| Details | |
| Mass | 1.037+0.054 −0.047 M☉ |
| Radius | 1.11+0.15 −0.09 R☉ |
| Luminosity | 1.2 L☉ |
| Surface gravity (log g) | 4.32 ± 0.09 cgs |
| Temperature | 5757 ± 85 K |
| Metallicity [Fe/H] | 0.21 ± 0.09 dex |
| Age | 6 ± 2 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| KIC | data |
| Extrasolar Planets Encyclopaedia | data |
Kepler-452 is a G-type main-sequence star located about 1,810 light-years away from Earth[1] in the Cygnus constellation.[5] Although similar in temperature to the Sun, it is 20% brighter, 3.7% more massive and 11% larger.[6][7] Alongside this, the star is approximately six billion years old and possesses a high metallicity.[3]
- ^ a b c d e Cite error: The named reference
Gaia DR3was invoked but never defined (see the help page). - ^ "Kepler Input Catalog search result". Space Telescope Science Institute. Retrieved 25 July 2015.
- ^ a b Jenkins, Jon M.; Twicken, Joseph D.; Batalha, Natalie M.; Caldwell, Douglas A.; Cochran, William D.; Endl, Michael; et al. (2015). "Discovery and validation of Kepler-452b: A 1.6 R🜨 super Earth exoplanet in the habitable zone of a G2 star". The Astronomical Journal. 105 (2). Institute of Physics: 56. arXiv:1507.06723. Bibcode:2015AJ....150...56J. doi:10.1088/0004-6256/150/2/56. S2CID 26447864.
- ^ Cite error: The named reference
Simbadwas invoked but never defined (see the help page). - ^ Witze, Alexandra (23 July 2015). "NASA spies Earth-sized exoplanet orbiting Sun-like star". Nature. Retrieved 23 July 2015.
- ^ Chou, Felicia; Johnson, Michelle (23 July 2015). "NASA's Kepler Mission Discovers Bigger, Older Cousin to Earth" (Press release). NASA. Retrieved 23 July 2015.
- ^ Rincon, Paul (23 July 2015). "'Earth 2.0' found in Nasa Kepler telescope haul". BBC. Retrieved 23 July 2015.