HD 147506
HD 147506, also known as HAT-P-2 and formally named Hunor, is a magnitude 8.7 F8 dwarf star that is somewhat larger and hotter than the Sun. The star is approximately 419 light-years (128 parsecs) from Earth and is positioned near the keystone of Hercules. It is estimated to be 2 to 3 billion years old, towards the end of its main sequence life. There is one known transiting exoplanet, and a second planet not observed to transit.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 16h 20m 36.3576s |
| Declination | +41° 02′ 53.107″ |
| Apparent magnitude (V) | +8.71 |
| Characteristics | |
| Spectral type | F8V |
| Variable type | planetary transit, planet-induced stellar pulsations |
| Astrometry | |
| Radial velocity (Rv) | −20.47±0.30 km/s |
| Proper motion (μ) | RA: −10.078(12) mas/yr Dec.: −29.057(15) mas/yr |
| Parallax (π) | 7.7811 ± 0.0118 mas |
| Distance | 419.2 ± 0.6 ly (128.5 ± 0.2 pc) |
| Absolute magnitude (MV) | +3.31 |
| Details | |
| Mass | 1.360±0.040 M☉ |
| Radius | 1.640+0.090 −0.080 R☉ |
| Luminosity | 4.3 L☉ |
| Surface gravity (log g) | 4.14±0.04 cgs |
| Temperature | 6,290±60 K |
| Metallicity [Fe/H] | 0.140±0.080 dex |
| Rotational velocity (v sin i) | 20.80±0.30 km/s |
| Age | 2.60±0.50 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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