HD 132563
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| A | |
| Right ascension | 14h 58m 21.520s |
| Declination | +44° 02′ 35.33″ |
| Apparent magnitude (V) | 8.966 |
| B | |
| Right ascension | 14h 58m 21.136s |
| Declination | +44° 02′ 35.86″ |
| Apparent magnitude (V) | 9.472 |
| Characteristics | |
| Spectral type | F8 III |
| B−V color index | 0.560 |
| Astrometry | |
| A | |
| Radial velocity (Rv) | −6.68±0.20 km/s |
| Proper motion (μ) | RA: −62.790 mas/yr Dec.: −67.676 mas/yr |
| Parallax (π) | 9.4137±0.0155 mas |
| Distance | 346.5 ± 0.6 ly (106.2 ± 0.2 pc) |
| Absolute magnitude (MV) | 4.05 |
| B | |
| Radial velocity (Rv) | 6.05±0.20 km/s |
| Proper motion (μ) | RA: −57.480 mas/yr Dec.: −70.146 mas/yr |
| Parallax (π) | 9.4745 ± 0.0112 mas |
| Distance | 344.2 ± 0.4 ly (105.5 ± 0.1 pc) |
| Absolute magnitude (MV) | 4.56 |
| Orbit | |
| Primary | Aa |
| Companion | Ab |
| Period (P) | 47 yr |
| Semi-major axis (a) | 14.8 AU |
| Eccentricity (e) | 0.860 |
| Periastron epoch (T) | B 2012.34 |
| Argument of periastron (ω) (secondary) | 160.2° |
| Orbit | |
| Primary | A |
| Companion | B |
| Period (P) | 4,934 yr |
| Semi-major axis (a) | 4.1" (400 AU) |
| Details | |
| Aa | |
| Mass | 1.081±0.010 M☉ |
| Radius | 1.3 R☉ |
| Luminosity | 2.4 L☉ |
| Surface gravity (log g) | 4.15 cgs |
| Temperature | 6,168±100 K |
| Metallicity [Fe/H] | −0.18±0.10 dex |
| Rotational velocity (v sin i) | 3.9 km/s |
| Age | ~5 Gyr |
| Ab | |
| Mass | 0.6 M☉ |
| B | |
| Mass | 1.010±0.010 M☉ |
| Radius | 1.1 R☉ |
| Luminosity | 1.5 L☉ |
| Surface gravity (log g) | 4.27 cgs |
| Temperature | 5,985±100 K |
| Metallicity [Fe/H] | −0.19±0.10 dex |
| Rotational velocity (v sin i) | 3.4 km/s |
| Other designations | |
| BD+44 2408, HIP 73261, SAO 45312 | |
| Database references | |
| SIMBAD | data |
| A | |
| B | |
HD 132563 is a triple star system in the constellation Boötes. The two resolvable components of this system are designated HD 132563A and HD 132563B. The primary star, HD 132563A, is actually a spectroscopic binary with a period of more than 15 years and an orbital eccentricity of greater than 0.65. The smaller member of this tightly orbiting pair has about 55% the mass of the Sun.