Eta Herculis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 16h 42m 53.7653s |
| Declination | +38° 55′ 20.116″ |
| Apparent magnitude (V) | 3.487 |
| Characteristics | |
| Spectral type | G7.5 IIIb |
| U−B color index | +0.61 |
| B−V color index | +0.92 |
| Astrometry | |
| Radial velocity (Rv) | +8.3 km/s |
| Proper motion (μ) | RA: +35.58 mas/yr Dec.: −84.98 mas/yr |
| Parallax (π) | 29.11±0.52 mas |
| Distance | 112 ± 2 ly (34.4 ± 0.6 pc) |
| Absolute magnitude (MV) | +0.84 |
| Details | |
| Mass | 2.01±0.11 M☉ |
| Radius | 8.92±0.07 R☉ |
| Luminosity | 45.8±2.3 L☉ |
| Temperature | 5,025±65 K |
| Metallicity [Fe/H] | −0.198 dex |
| Rotational velocity (v sin i) | 8 km/s |
| Age | 1.08±0.18 Gyr |
| Other designations | |
| η Her, 44 Her, HR 6220, BD−39°3029, HD 150997, FK5 626, HIP 81833, SAO 65504, GC 22502, CCDM J16428+3855A | |
| Database references | |
| SIMBAD | data |
Eta Herculis (η Her, η Herculis) is a third-magnitude star in the constellation Hercules. It is located at 110 light-years from Earth.