Kepler-107
Star in the constellation Cygnus
From Wikipedia, the free encyclopedia
Kepler-107 is a star about 1,694 light-years (519 parsecs) away in the constellation Cygnus. No stellar companions were found as of 2016.[8]
| 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☉ |
| Luminosity | 2.38[5] L☉ |
| 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 |
| Rotation | 22.35 days[6] |
| 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, KIC 10875245, 2MASS J19480677+4812309[7] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
Planetary system
Kepler-107 has four known planets discovered in 2014.[9][10][11][12] 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/cm3) as the innermost exoplanet Kepler-107 b (about 5.3 g/cm3).[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🜨 |
