Astronomy:Kepler-107
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Short description: Star in the constellation Cygnus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[1] mas/yr Dec.: 0.158[1] mas/yr |
| Parallax (π) | 1.9259 ± 0.0092[1] mas |
| 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
- ↑ 1.0 1.1 1.2 1.3 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 Bonomo, Aldo S.; Zeng, Li; Damasso, Mario; Leinhardt, Zoë M.; Justesen, Anders B.; Lopez, Eric; Lund, Mikkel N.; Malavolta, Luca 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. doi:10.1038/s41550-018-0684-9. Bibcode: 2019NatAs...3..416B.
- ↑ 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, doi:10.3847/0004-6256/152/1/8, Bibcode: 2016AJ....152....8K
- ↑ "Exoplanets Data Explorer | Exoplanets - Detail View". http://exoplanets.org/detail/Kepler-107_b.
- ↑ "Exoplanets Data Explorer | Exoplanets - Detail View". http://exoplanets.org/detail/Kepler-107_c.
- ↑ "Exoplanets Data Explorer | Exoplanets - Detail View". http://exoplanets.org/detail/Kepler-107_d.
- ↑ "Exoplanets Data Explorer | Exoplanets - Detail View". http://exoplanets.org/detail/Kepler-107_e.
- ↑ Bonomo, A. S. 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. doi:10.1051/0004-6361/202346211.
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