Article · Wikipedia archive · Last revised Jul 10, 2026

Kepler-107

Kepler-107 is a star about 1,694 light-years away in the constellation Cygnus. No stellar companions were found as of 2016.

Last revised
Jul 10, 2026
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Kepler-107
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus1
Right ascension 19h 48m 06.77346s2
Declination +48° 12′ 30.964″2
Apparent magnitude (V) 12.703
Characteristics
Evolutionary stage subgiant2
Spectral type F6/G1 IV/V3
Apparent magnitude (B) 13.344
Apparent magnitude (V) 12.704
Apparent magnitude (J) 11.394
Apparent magnitude (K) 11.064
Astrometry
Radial velocity (Rv)5.64423±0.000454 km/s
Proper motion (μ) RA: −9.393 mas/yr2
Dec.: 0.158 mas/yr2
Parallax (π)1.9259±0.0092 mas2
Distance1,694 ± 8 ly
(519 ± 2 pc)
Details
Mass1.238±0.0294 M☉
Radius1.447±0.0144 R☉
Luminosity2.385 L☉
Surface gravity (log g)Spectroscopic: 4.28±0.10 cgs
Asteroseismic: 4.210±0.0134 cgs
Temperature5854±614 K
Metallicity [Fe/H]0.321±0.0654 dex
Rotation22.35 days6
Rotational velocity (v sin i)3.6±0.54 km/s
Age4.29+0.70
−0.564 Gyr
Other designations
Kepler-107, KOI-117, KIC 10875245, 2MASS J19480677+48123097
Database references
SIMBADdata
Exoplanet Archivedata

Kepler-107 is a star about 1,694 light-years (519 parsecs) away in the constellation Cygnus. No stellar companions were found as of 2016.8

Planetary system

Kepler-107 has four known planets discovered in 2014.9101112 A giant impact is the likely origin of two planets in the system.4 Kepler-107 c is more than twice as dense (about 12.6 g/cm3) as the innermost exoplanet Kepler-107 b (about 5.3 g/cm3).4

The Kepler-107 planetary system13
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination
(°) 		Radius
b 3.8+1.8
−1.7 M🜨 		0.04544±0.00036 3.1800218±0.0000029 <0.10 89.05±0.67 1.536±0.025 R🜨
c 10.0±2.0 M🜨 0.06064±0.00048 4.901452±0.0 <0.080 89.49+0.34
−0.44 		1.597±0.026 R🜨
d <7.7 M🜨 0.08377±0.00065 7.95839±0.00012 <0.11 87.55+0.64
−0.48 		0.860±0.060 R🜨
e 14.1±3.3 M🜨 0.12638±0.00099 14.749143±0.000019 <0.10 89.67±0.22 2.903±0.035 R🜨
References

References

  1. Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
  2. Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. Gray, R. O.; Corbally, C. J.; De Cat, P.; Fu, J. N.; Ren, A. B.; Shi, J. R.; Luo, A. L.; Zhang, H. T.; Wu, Y.; Cao, Z.; Li, G.; Zhang, Y.; Hou, Y.; Wang, Y. (2016). "LAMOST Observations in the Kepler Field: Spectral Classification with the MKCLASS Code". The Astronomical Journal. 151 (1): 13. Bibcode:2016AJ....151...13G. doi:10.3847/0004-6256/151/1/13.
  4. Bonomo, Aldo S.; Zeng, Li; et al. (May 2019). "A giant impact as the likely origin of different twins in the Kepler-107 exoplanet system". Nature Astronomy. 3 (5): 416–423. arXiv:1902.01316. Bibcode:2019NatAs...3..416B. doi:10.1038/s41550-018-0684-9. S2CID 89604609.
  5. Mishra, Lokesh; Alibert, Yann; Udry, Stéphane; Mordasini, Christoph (2023). "Framework for the architecture of exoplanetary systems. I. Four classes of planetary system architecture". Astronomy and Astrophysics. 670: A68. arXiv:2301.02374. Bibcode:2023A&A...670A..68M. doi:10.1051/0004-6361/202243751.
  6. David, Trevor J.; Contardo, Gabriella; Sandoval, Angeli; Angus, Ruth; Lu, Yuxi Lucy; Bedell, Megan; Curtis, Jason L.; Foreman-Mackey, Daniel; Fulton, Benjamin J.; Grunblatt, Samuel K.; Petigura, Erik A.; Petigura, Erik A. (2021). "Evolution of the Exoplanet Size Distribution: Forming Large Super-Earths over Billions of Years". The Astronomical Journal. 161 (6): 265. arXiv:2011.09894. Bibcode:2021AJ....161..265D. doi:10.3847/1538-3881/abf439.
  7. "Kepler-107". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-08-25.
  8. Kraus, Adam L.; Ireland, Michael J.; Huber, Daniel; Mann, Andrew W.; Dupuy, Trent J. (2016), "The Impact of Stellar Multiplicity on Planetary Systems. I. The Ruinous Influence of Close Binary Companions", The Astronomical Journal, 152 (1): 8, arXiv:1604.05744, Bibcode:2016AJ....152....8K, doi:10.3847/0004-6256/152/1/8, S2CID 119110229
  9. "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  10. "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  11. "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  12. "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  13. Bonomo, A. S.; Dumusque, X.; et al. (April 2023). "Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems". Astronomy & Astrophysics. arXiv:2304.05773. Bibcode:2023A&A...677A..33B. doi:10.1051/0004-6361/202346211. S2CID 258078829.