| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 45m 44.5975s[2] |
| Declination | +44° 38′ 29.611″[2] |
| Characteristics | |
| Spectral type | G0V / G0V[3] |
| Astrometry | |
| Proper motion (μ) | RA: −3.424(19) mas/yr[2] Dec.: −5.033(20) mas/yr[2] |
| Parallax (π) | 0.5529 ± 0.0184 mas[2] |
| Distance | 5,900 ± 200 ly (1,810 ± 60 pc) |
| Orbit | |
| Primary | Kepler-34A |
| Companion | Kepler-34B |
| Period (P) | 27.7958103 (± 0.0000016) d |
| Semi-major axis (a) | 0.22882 (± 0.00019) AU |
| Eccentricity (e) | 0.52087 (± 0.00055) |
| Inclination (i) | 89.8584 (± 0.0080)° |
| Details | |
| Kepler-34A | |
| Mass | 1.0479 (± 0.0033) M☉ |
| Radius | 1.1618 (± 0.0030) R☉ |
| Temperature | 5913 (± 130) K |
| Metallicity | -0.07 (± 0.15) |
| Kepler-34B | |
| Mass | 1.0208 (± 0.0022) M☉ |
| Radius | 1.0927 (± 0.0030) R☉ |
| Temperature | 5867 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-34 is an eclipsing binary star system in the constellation of Cygnus. Both stars have roughly the same mass as the Sun and, like the Sun, both are spectral class G. They are separated by 0.22 AU, and complete an eccentric (e=0.5)[4] orbit around a common center of mass every 27 days.
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