HAT-P-7
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 28m 59.3539s |
| Declination | +47° 58′ 10.217″ |
| Apparent magnitude (V) | 10.46 |
| Characteristics | |
| A | |
| Evolutionary stage | Main sequence |
| Spectral type | F6V |
| Apparent magnitude (B) | ~10.90 |
| Apparent magnitude (V) | ~10.46 |
| Apparent magnitude (J) | 9.555 ± 0.030 |
| Apparent magnitude (H) | 9.344 ± 0.029 |
| Apparent magnitude (K) | 9.334 ± 0.018 |
| Variable type | planetary transit |
| B | |
| Evolutionary stage | Main sequence |
| Spectral type | M5.5V |
| Astrometry | |
| Radial velocity (Rv) | −10.23±0.25 km/s |
| Proper motion (μ) | RA: −18.325(14) mas/yr Dec.: 8.851(14) mas/yr |
| Parallax (π) | 2.9991±0.0114 mas |
| Distance | 1,088 ± 4 ly (333 ± 1 pc) |
| Orbit | |
| Primary | A |
| Companion | B |
| Semi-major axis (a) | 730 AU |
| Orbit | |
| Primary | A |
| Companion | C |
| Semi-major axis (a) | 32+16 −11 AU |
| Eccentricity (e) | 0.76+0.12 −0.26 |
| Details | |
| A | |
| Mass | 1.35±0.22 M☉ |
| Radius | 1.994±0.081 R☉ |
| Surface gravity (log g) | 3.97±0.08 cgs |
| Temperature | 6,532±109 K |
| Metallicity [Fe/H] | 0.15±0.08 dex |
| Rotational velocity (v sin i) | 5.0±1.2 km/s |
| B | |
| Mass | 0.21 M☉ |
| C | |
| Mass | 0.19 M☉ |
| Other designations | |
| HAT-P-7, BD+47°2846, Kepler-2, KOI-2, KIC 10666592, TOI-1265, TIC 424865156, TYC 3547-1402-1, GSC 03547-01402, 2MASS J19285935+4758102 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HAT-P-7 is a triple star system located about 1,088 light-years away in the constellation Cygnus. The apparent magnitude of this star is 10.5, which means it is not visible to the naked eye but can be seen with a small telescope on a clear dark night.