113 Herculis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 18h 54m 44.88499s |
| Declination | +22° 38′ 42.2715″ |
| Apparent magnitude (V) | 4.57 |
| Characteristics | |
| Giant | |
| Evolutionary stage | Red clump |
| Spectral type | G8III+ |
| Main sequence | |
| Evolutionary stage | Main Sequence |
| Spectral type | A0.5 |
| Astrometry | |
| Radial velocity (Rv) | −21.94±1.84 km/s |
| Proper motion (μ) | RA: +6.571 mas/yr Dec.: +1.305 mas/yr |
| Parallax (π) | 7.5501±0.2067 mas |
| Distance | 430 ± 10 ly (132 ± 4 pc) |
| Absolute magnitude (MV) | −1.23 |
| Orbit | |
| Period (P) | 245.325±0.006 days |
| Semi-major axis (a) | 0.0101±0.0001″ |
| Eccentricity (e) | 0.101±0.005 |
| Inclination (i) | 40.2±0.6° |
| Longitude of the node (Ω) | 70.1±1.2° |
| Periastron epoch (T) | 2447784.1±0.8 JD |
| Argument of periastron (ω) (secondary) | 186.7±2.0° |
| Semi-amplitude (K1) (primary) | 15.48±0.09 km/s |
| Semi-amplitude (K2) (secondary) | 22.58±0.30 km/s |
| Details | |
| A | |
| Mass | 3.045 M☉ |
| Radius | 22.2 R☉ |
| Temperature | 5047 K |
| Age | 390.9 Myr |
| B | |
| Mass | 2.087 M☉ |
| Radius | 2.05 R☉ |
| Temperature | 9506 K |
| Age | 390.9 Myr |
| Other designations | |
| 113 Her, BD+22 3524, GC 25954, HD 175492, HD 175493, HIP 92818, HR 7133, SAO 86567, PPM 108046, ADS 11820, TYC 2109-2837-1, IRAS 18526+2234 | |
| Database references | |
| SIMBAD | data |
113 Herculis is a binary star system located about 430 light-years (130 parsecs) away in the constellation Hercules. With an apparent magnitude of 4.6, it is faintly visible to the naked eye.
This star was first discovered to be a spectroscopic binary in 1900 by W. W. Campbell and W. H. Wright. The two stars orbit with a period of 245.3 days.