Kepler-107
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 48m 06.77346s[2] |
| Declination | +48° 12′ 30.964″[2] |
| Apparent magnitude (V) | 12.70[3] |
| Characteristics | |
| Evolutionary stage | subgiant[2] |
| Spectral type | F6/G1 IV/V[3] |
| Apparent magnitude (B) | 13.34[4] |
| Apparent magnitude (V) | 12.70[4] |
| Apparent magnitude (J) | 11.39[4] |
| Apparent magnitude (K) | 11.06[4] |
| Astrometry | |
| Radial velocity (Rv) | 5.64423±0.00045[4] km/s |
| Proper motion (μ) | RA: −9.393 mas/yr[2] Dec.: 0.158 mas/yr[2] |
| Parallax (π) | 1.9259±0.0092 mas[2] |
| Distance | 1,694 ± 8 ly (519 ± 2 pc) |
| Details | |
| Mass | 1.238±0.029[4] M☉ |
| Radius | 1.447±0.014[4] R☉ |
| Surface gravity (log g) | Spectroscopic: 4.28±0.10 cgs Asteroseismic: 4.210±0.013[4] cgs |
| Temperature | 5854±61[4] K |
| Metallicity [Fe/H] | 0.321±0.065[4] dex |
| Rotational velocity (v sin i) | 3.6±0.5[4] km/s |
| Age | 4.29+0.70 −0.56[4] Gyr |
| Other designations | |
| Kepler-107, KOI-117, Gaia DR2 2086625752425381632, KIC 10875245, 2MASS J19480677+4812309[5] | |
| 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.[6]
Planetary system
[edit]
Kepler-107 has four known planets discovered in 2014.[7][8][9][10] 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 cm−3) as the innermost exoplanet Kepler-107 b (about 5.3 g cm−3).[4]
| 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
[edit]- ^ 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.
- ^ a b c d e 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 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.
- ^ a b c d e f g h i j k l m n 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. Bibcode:2023A&A...677A..33B. doi:10.1051/0004-6361/202346211. S2CID 258078829.
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