Kepler-66

Kepler-66 is a star with slightly more mass than the Sun in the NGC 6811 open cluster in the Cygnus constellation. It has one confirmed planet, slightly smaller than Neptune, announced in 2013.

Kepler-66
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension 19h 35m 55.5743s[1]
Declination +46° 41′ 15.957″[1]
Apparent magnitude (V) 15.3
Characteristics
Spectral type G0V
Astrometry
Proper motion (μ) RA: −3.443±0.049[1] mas/yr
Dec.: −8.784±0.045[1] mas/yr
Parallax (π)0.8030 ± 0.0256[1] mas
Distance4,100 ± 100 ly
(1,250 ± 40 pc)
Details
Mass1.038 ± 0.044 M☉
Radius0.966 ± 0.042 R☉
Temperature5962 ± 79 K K
Metallicity [Fe/H]0.012 ± 0.003 dex
Rotation10.527±0.011 days[2]
Age1 ± 0.17 Gyr
Other designations
KOI-1958, KIC 9836149[3]
Database references
SIMBADdata
Extrasolar Planets
Encyclopaedia		data

Planetary system
The Kepler-66 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.31 MJ 0.1352 17.815815 — — 2.80 R⊕

References
  1. 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.
  2. McQuillan, A.; Mazeh, T.; Aigrain, S. (2013). "Stellar Rotation Periods of The Kepler objects of Interest: A Dearth of Close-In Planets Around Fast Rotators". The Astrophysical Journal Letters. 775 (1). L11. arXiv:1308.1845. Bibcode:2013ApJ...775L..11M. doi:10.1088/2041-8205/775/1/L11. S2CID 118557681.
  3. "KOI-1958". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 14 February 2018.
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