HD 132563
HD 132563 is a triple star system in the constellation Boötes. The two resolvable components of this system are designated HD 132563 AC and HD 132563 B. The primary star, HD 132563 AC, 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.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| AC | |
| Right ascension | 14h 58m 21.519s |
| Declination | +44° 02′ 35.33″ |
| Apparent magnitude (V) | 8.966 |
| B | |
| Right ascension | 14h 58m 21.180s |
| Declination | +44° 02′ 35.87″ |
| Apparent magnitude (V) | 9.472 |
| Characteristics | |
| Spectral type | F8 V/G0 V |
| B−V color index | 0.560 |
| Astrometry | |
| Radial velocity (Rv) | −6.5 ± 1.0 km/s |
| Proper motion (μ) | RA: −59.86 mas/yr Dec.: −70.12 mas/yr |
| Parallax (π) | 9.4809 ± 0.0253 mas |
| Distance | 344.0 ± 0.9 ly (105.5 ± 0.3 pc) |
| Absolute magnitude (MV) | 4.05/4.56 |
| Orbit | |
| Primary | HD 132563 A |
| Companion | HD 132563 C |
| 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 | HD 132563 AC |
| Companion | HD 132563 B |
| Semi-major axis (a) | 365 AU |
| Details | |
| HD 132563 AC | |
| Mass | 1.081±0.010 M☉ |
| Surface gravity (log g) | 4.15 cgs |
| Temperature | 6168±100 K |
| Metallicity [Fe/H] | −0.18±0.10 dex |
| Rotational velocity (v sin i) | 2.0±0.8 km/s |
| Age | ~5 Gyr |
| HD 132563 B | |
| Mass | 1.010±0.010 M☉ |
| Surface gravity (log g) | 4.27 cgs |
| Temperature | 5985±100 K |
| Metallicity [Fe/H] | −0.19±0.10 dex |
| Rotational velocity (v sin i) | 1.5±0.5 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.