| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 48m 06.77346s [1] |
| Declination | +48° 12′ 30.9642″ [1] |
| Apparent magnitude (V) | 12.70 |
| Characteristics | |
| Spectral type | G2V [2] |
| Apparent magnitude (B) | 13.34 [2] |
| Apparent magnitude (V) | 12.70 [2] |
| Apparent magnitude (J) | 11.39 [2] |
| Apparent magnitude (K) | 11.06 [2] |
| Astrometry | |
| Radial velocity (Rv) | 5.64423 ± 4.5 × 10–4 [2] km/s |
| Proper motion (μ) |
RA: −9.393
mas/
yr
[1] Dec.: 0.158 mas/ yr [1] |
| Parallax (π) | 1.9259 ± 0.0092 mas [1] |
| Distance | 1,694 ± 8
ly (519 ± 2 pc) |
| Details | |
| Mass | 1.238±0.029 [2] M☉ |
| Radius | 1.447±0.014 [2] R☉ |
| Surface gravity (log g) | (Spectroscopic) 4.28 ± 0.10 cgs (Asteroseismic) 4.210 ± 0.013 [2] cgs |
| Temperature | 5854±61 [2] K |
| Metallicity [Fe/H] | 0.321±0.065 [2] dex |
| Rotational velocity (v sin i) | 3.6±0.5 [2] km/s |
| Age | 4.29+0.70 −0.56 [2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Kepler-107 is a star about 1,694 light-years (519 parsecs) away in the constellation Cygnus. It is a spectral type G2 star. An imaging survey in 2016 failed to find any stellar companions to it. [4]
Planetary system
Kepler-107 has four known planets discovered in 2014. [5] [6] [7] [8] A giant impact is the likely origin of two planets in the system. [2] Kepler-107 c is more than twice as dense (about 12.6 g cm−3) as the innermost exoplanet Kepler-107 b (about 5.3 g cm−3). [2]
| 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
- ^ a b c d 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.
- ^ a b c d e f g h i j k l m n o 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. S2CID 89604609.
- ^ Kepler-107 -- Rotationally variable Star
- ^ 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
- ^ "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
- ^ "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
- ^ "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
- ^ "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
- ^ 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. doi: 10.1051/0004-6361/202346211. S2CID 258078829.
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