Kepler-1658
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 18h 46m 22.24188s |
| Declination | +75° 26′ 02.2400″ |
| Apparent magnitude (V) | 11.556±0.100 |
| Characteristics | |
| A | |
| Evolutionary stage | Subgiant |
| Spectral type | F5 |
| BC | |
| Evolutionary stage | main sequence |
| Spectral type | KV + MV |
| Variable type | eclipsing binary |
| Astrometry | |
| Radial velocity (Rv) | −21.815±0.053 km/s |
| Proper motion (μ) | RA: +0.100 mas/yr Dec.: −5.542 mas/yr |
| Parallax (π) | 1.2260±0.0173 mas |
| Distance | 2,660 ± 40 ly (820 ± 10 pc) |
| Orbit | |
| Primary | A |
| Name | BC |
| Semi-major axis (a) | 50 AU |
| Orbit | |
| Primary | B |
| Name | C |
| Period (P) | 3.849363145 days |
| Details | |
| Kepler-1658 A | |
| Mass | 1.45±0.03 M☉ |
| Radius | 3.26±0.14 R☉ |
| Surface gravity (log g) | 4.13±0.05 cgs |
| Temperature | 5,948±100 K |
| Metallicity [Fe/H] | −0.27±0.06 dex |
| Rotational velocity (v sin i) | 38 km/s |
| Age | 2.0±0.1 Gyr |
| Kepler-1658 B | |
| Mass | 0.75 M☉ |
| Kepler-1658 C | |
| Mass | 0.19 M☉ |
| Radius | 0.23 R☉ |
| Other designations | |
| KOI-4, KIC 3861595, TIC 377873569, TYC 3135-652-1 | |
| Database references | |
| SIMBAD | data |
Kepler-1658 is a triple star system located in the constellation Cygnus. Based on parallax measurements by the Gaia spacecraft, it is located at a distance of 2,660 light-years (820 parsecs).
This is an hierarchical triple system whose primary is an F-type subgiant star with 1.45 times the Sun's mass and 3.26 times the Sun's radius. The outer system, 50 astronomical units away from the primary, is an eclipsing binary whose components have an orbital period of 3.8 days: star B is probably a K-type dwarf with 0.8 times the Sun's mass, and star C a red dwarf with 0.19 times the mass of the Sun and 0.23 times the radius.