Kepler-107

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Kepler-107
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 G2
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
Distance1713.9518 ± 17.9386 ly
(525.5 ± 5.5[2] pc)
Details
Mass1.238 ± 0.029[2] M
Radius1.447 ± 0.014[2] R
Surface gravity (log g)(Spectroscopic) 4.28 ± 0.10 cgs (Asteroseismic ) 4.210 ± 0.013[2] cgs
Temperature5854 ± 61[2] K
Metallicity [Fe/H]0.321 ± 0.065[2] dex
Rotational velocity (v sin i)3.6 ± 0.5[2] km/s
Age4.29 +0.56
−0.70
[2] Gyr
Database references
SIMBADdata

Kepler-107 is a star in the constellation Cygnus. It is a spectral type G2 star. 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]

Planetary system[edit]

Kepler-107 has four known planets.

The Kepler-107 planetary system[3][4][5][6][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[edit]

  1. ^ a b c d e 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.
  2. ^ a b c d e f g h i j k l "A giant impact as the likely origin of different twins in the Kepler-107 exoplanet system". www.nature.com.
  3. ^ "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  4. ^ "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  5. ^ "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.
  6. ^ "Exoplanets Data Explorer | Exoplanets - Detail View". exoplanets.org. Retrieved 5 May 2017.