Kepler-107
Kepler-107 is a star in the constellation Cygnus. It is a spectral type G2 star. The imaging survey in 2016 has failed to find any stellar companions to it.[4]
| 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 | G2V[2] |
| 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 |
| Distance | 1713.9518 ± 17.9386 ly (525.5 ± 5.5[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 +0.56 −0.70[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Planetary system
Kepler-107 has four known planets discovered in 2014.[5] 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]
| 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⊕ |
References
- 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.
- 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: 8, arXiv:1604.05744, 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.
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