Kepler-19
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 19h 21m 40.9996s[1] |
| Declination | +37° 51′ 06.436″[1] |
| Apparent magnitude (V) | 12.04[2] |
| Astrometry | |
| Proper motion (μ) | RA: 25.284±0.033[1] mas/yr Dec.: −30.711±0.037[1] mas/yr |
| Parallax (π) | 4.5465 ± 0.0202[1] mas |
| Distance | 717 ± 3 ly (219.9 ± 1.0 pc) |
| Details | |
| Mass | 0.936±0.04[3] M☉ |
| Radius | 0.85±0.018[3] R☉ |
| Surface gravity (log g) | 4.54[4] cgs |
| Temperature | 5541±60[3] K |
| Metallicity [Fe/H] | -0.13[4] dex |
| Rotational velocity (v sin i) | 1.8±0.5[5] km/s |
| Age | 1.9±1.7[3] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-19 (TYC 3134-1549-1, 2MASS J19214099+3751064, GSC 03134-01549, KOI-84)[4] is a G7V star that is host to planets Kepler-19b, Kepler-19c, and Kepler-19d. It is located five arcminutes northwest of the much more distant open cluster NGC 6791.
Planetary system[]
There are three known planets in the Kepler-19 planetary system. Planet b was discovered by the transit method, c by transit-timing variations[6] and d by radial velocity measurements.[7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 8.4+1.6 −1.5 M |