Kepler-23

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[2] mas
Distance2,790 ± 40 ly
(860 ± 10 pc)
Details
Mass1.11[3] M☉
Radius1.52 ± 0.24[3] R☉
Luminosity0.79 ± 0.04[3] L☉
Temperature5760 ± 124[3] K
Metallicity [Fe/H]–0.09 ± 0.14[3] dex
Rotational velocity (v sin i)[3] km/s
Other designations
KOI-168, KIC 11512246, GSC 03564-01806, 2MASS J19365254+4928452[5]
Database references
SIMBADdata
KICdata

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.

The Kepler-23 planetary system[4]
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

  1. ↑ "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
  2. 1 2 3 4 5 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 Data Release 2 Vizier catalog entry
  3. 1 2 3 4 5 6 7 8 Kepler-23b, NASA Ames Research Center, retrieved 2011-12-06
  4. 1 2 Schneider, Jean, "Star: Kepler-23", Extrasolar Planets Encyclopaedia, Paris Observatory, archived from the original on 2012-04-19, retrieved 2011-12-06
  5. ↑ "Kepler-23". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 January 2018.

Coordinates: 19h 36m 52.0s, +49° 28′ 45″


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