HAT-P-19
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 38m 04.0136s |
| Declination | +34° 42′ 41.554″ |
| Apparent magnitude (V) | 12.901 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | K1V |
| Astrometry | |
| Radial velocity (Rv) | −19.61±0.66 km/s |
| Proper motion (μ) | RA: −26.745(11) mas/yr Dec.: −32.568(10) mas/yr |
| Parallax (π) | 4.9567±0.0137 mas |
| Distance | 658 ± 2 ly (201.7 ± 0.6 pc) |
| Details | |
| Mass | 0.863+0.029 −0.025 M☉ |
| Radius | 0.851±0.013 R☉ |
| Luminosity | 0.37+0.08 −0.06 L☉ |
| Surface gravity (log g) | 4.514+0.019 −0.017 cgs |
| Temperature | 5049+42 −65 K |
| Metallicity | 0.283+0.081 −0.079 |
| Rotation | 14.66±0.03 d |
| Rotational velocity (v sin i) | 0.7±0.5 km/s |
| Age | 8.8±5.2 Gyr |
| Other designations | |
| Gaia DR2 3654266795168165128, 2MASS J00380401+3442416 | |
| Database references | |
| SIMBAD | data |
HAT-P-19 is a K-type main-sequence star about 658 light-years away. The star is old yet metal-enriched, having amount of heavy elements 250% of solar abundance. A survey in 2012 failed to find any stellar companions to HAT-P-19.