Kepler-23
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 36m 52.5356s[2] |
| Declination | +49° 28′ 45.253″[2] |
| Apparent magnitude (V) | 14.0[3] |
| Characteristics | |
| Spectral type | G5[4] |
| Astrometry | |
| Proper motion (μ) | RA: 2.262±0.030[2] mas/yr Dec.: 3.851±0.031[2] mas/yr |
| Parallax (π) | 1.1678 ± 0.0161 mas[2] |
| Distance | 2,790 ± 40 ly (860 ± 10 pc) |
| Details | |
| Mass | 1.11[3] M☉ |
| Radius | 1.52 ± 0.24[3] R☉ |
| Luminosity | 0.79 ± 0.04[3] L☉ |
| Temperature | 5760 ± 124[3] K |
| Metallicity [Fe/H] | –0.09 ± 0.14[3] dex |
| Rotational velocity (v sin i) | [3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-23 is a star in the northern constellation of Cygnus, the swan, that is orbited by a planet found to be unequivocally within the star's habitable zone. With an apparent visual magnitude of 14.0,[3] this star is too faint to be seen with the naked eye.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | < 0.8 MJ | 0.099 | 7.1073 | — | — | 1.9 R🜨 |
| c | < 2.7 MJ | 0.08 | 10.7421 | — | — | 3.2 R🜨 |
References
- ^ "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d e f g h Kepler-23b, NASA Ames Research Center, retrieved 2011-12-06
- ^ a b Schneider, Jean, "Star: Kepler-23", Extrasolar Planets Encyclopaedia, Paris Observatory, archived from the original on 2012-04-19, retrieved 2011-12-06
- ^ "Kepler-23". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 January 2018.
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