HAT-P-15
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 04h 24m 59.5350s |
| Declination | +39° 27′ 38.313″ |
| Apparent magnitude (V) | 12.41 |
| Characteristics | |
| Spectral type | G5V |
| Variable type | planetary transit |
| Astrometry | |
| Radial velocity (Rv) | 31.21 km/s |
| Proper motion (μ) | RA: 14.233(21) mas/yr Dec.: −9.407(15) mas/yr |
| Parallax (π) | 5.1856±0.0166 mas |
| Distance | 629 ± 2 ly (192.8 ± 0.6 pc) |
| Details | |
| Mass | 1.013±0.043 M☉ |
| Radius | 1.080±0.039 R☉ |
| Luminosity | 1.00±0.11 L☉ |
| Surface gravity (log g) | 4.38±0.03 cgs |
| Temperature | 5684±25 K |
| Metallicity | 0.272±0.031 |
| Rotational velocity (v sin i) | 2.0±0.5 km/s |
| Age | 6.8+2.5 −1.6 Gyr |
| Other designations | |
| Berehynia, Gaia DR3 179498266829041664, TYC 2883-1687-1, GSC 02883-01687, 2MASS J04245952+3927382 | |
| Database references | |
| SIMBAD | data |
HAT-P-15 is a G-type main-sequence star about 630 light-years away. The star is older than Sun yet has a concentration of heavy elements roughly 190% of solar abundance. The star has no noticeable starspot activity.
The spectroscopic survey in 2015 have failed to find any stellar companions to it, yet imaging survey have identified a possibly two companion red dwarf stars at projected separations 1210 and 1370 AU, respectively.
The star was named Berehynia in December 2019 by Ukrainian amateur astronomers.