Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lyra |
Right ascension | 19h 07m 19.2813s[1] |
Declination | +42° 16′ 45.121″[1] |
Characteristics | |
Spectral type | G V[2] / M[3] |
Astrometry | |
Proper motion (μ) | RA: −4.575(14) mas/yr[1] Dec.: −13.219(14) mas/yr[1] |
Parallax (π) | 0.8546 ± 0.0119 mas[1] |
Distance | 3,820 ± 50 ly (1,170 ± 20 pc) |
Orbit | |
Primary | Kepler-38A |
Companion | Kepler-38B |
Period (P) | 18.79537 |
Semi-major axis (a) | 0.1469 |
Eccentricity (e) | 0.1032 |
Details | |
Kepler-38A | |
Mass | 0.949 M☉ |
Radius | 1.757 R☉ |
Temperature | 5640 K |
Metallicity | -0.11 |
Kepler-38B | |
Mass | 0.249 M☉ |
Radius | 0.2724 R☉ |
Metallicity | -0.11 |
Other designations | |
Database references | |
SIMBAD | data |
KIC | data |
Kepler-38 is a binary star system in the constellation Lyra. These stars, called Kepler-38A and Kepler-38B have masses of 95% and 25% solar masses respectively. The brighter star is spectral class G while the secondary has spectral class M. They are separated by 0.147 AU, and complete an eccentric orbit around a common center of mass every 18.8 days.[2]
Gaia DR3
was invoked but never defined (see the help page).