Kepler-107

Kepler-107 is a star in the constellation Cygnus. It is a spectral type G2 star. A giant impact is the likely origin of two planets in the system. Kepler-107 c is more than twice as dense (about 12.6 g cm−3) as the innermost Kepler-107 b (about 5.3 g cm−3).[2]

Kepler-107
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension  19h 48m 06.7736s[1]
Declination +48° 12′ 30.9619″[1]
Apparent magnitude (V) B= 13.34, V= 12.70, J= 11.39, K= 11.06[2]
Characteristics
Spectral type G2
Astrometry
Radial velocity (Rv)5.64423 ± 4.5 × 10–4[2] km/s
Proper motion (μ) RA: −9.480±0.036[1] mas/yr
Dec.: 0.321±0.043[1] mas/yr
Parallax (π)1.8725 ± 0.0202[1] mas
Distance1713.9518 ± 17.9386 ly
(525.5 ± 5.5[2] pc)
Details
Mass1.238 ± 0.029[2] M☉
Radius1.447 ± 0.014[2] R☉
Surface gravity (log g)(Spectroscopic) 4.28 ± 0.10 cgs (Asteroseismic ) 4.210 ± 0.013[2] cgs
Temperature5854 ± 61[2] K
Metallicity [Fe/H]0.321 ± 0.065[2] dex
Rotational velocity (v sin i)3.6 ± 0.5[2] km/s
Age4.29 +0.56
−0.70[2] Gyr
Database references
SIMBADdata

Planetary system

Kepler-107 has four known planets.

The Kepler-107 planetary system[3][4][5][6][2]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.01167 MJ→3.51 ± 1.52 M⊕ 0.04232 3.1800218 ± 2.9 × 10–6 0 89.05 ± 0.67° 0.1392 RJ→1.536 ± 0.025 R⊕
c 0.0133 MJ→9.39 ± 1.77 M⊕ 0.05647 4.901452 ± 1.0 × 10–5 0 89.49 +0.44
−0.34°		 0.161 RJ→1.597 ± 0.026 R⊕
d < 0.00371 MJ→ < 3.8 M⊕ 0.078 7.95839 ± 1.2 × 10–4 0 87.55 +0.48
−0.64°		 0.0955 RJ→0.86 ± 0.06 R⊕
e 0.0360 MJ→8.6 ± 3.6 M⊕ 0.1177 14.749143 ± 1.9 × 10–5 0 89.67 ± 0.22° 0.308 RJ→2.903 ± 0.035 R⊕
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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. Bonomo, Aldo S.; Zeng, Li; Damasso, Mario; Leinhardt, Zoë M.; Justesen, Anders B.; Lopez, Eric; Lund, Mikkel N.; Malavolta, Luca; Silva Aguirre, Victor; Buchhave, Lars A.; Corsaro, Enrico; Denman, Thomas; Lopez-Morales, Mercedes; Mills, Sean M.; Mortier, Annelies; Rice, Ken; Sozzetti, Alessandro; Vanderburg, Andrew; Affer, Laura; Arentoft, Torben; Benbakoura, Mansour; Bouchy, François; Christensen-Dalsgaard, Jørgen; Collier Cameron, Andrew; Cosentino, Rosario; Dressing, Courtney D.; Dumusque, Xavier; Figueira, Pedro; Fiorenzano, Aldo F. M.; García, Rafael A.; Handberg, Rasmus; Harutyunyan, Avet; Johnson, John A.; Kjeldsen, Hans; Latham, David W.; Lovis, Christophe; Lundkvist, Mia S.; Mathur, Savita; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Motalebi, Fatemeh; Nascimbeni, Valerio; Nava, Chantanelle; Pepe, Francesco; Phillips, David F.; Piotto, Giampaolo; Poretti, Ennio; Sasselov, Dimitar; Ségransan, Damien; Udry, Stéphane; Watson, Chris (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.
  3. "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  4. "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  5. "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  6. "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
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