| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 15h07m 20.369s[1] |
| Declination | +18° 26′ 30.57″[1] |
| Apparent magnitude (V) | 6.03[2] |
| Characteristics | |
| Spectral type | A3Vnn[2] |
| U−B color index | +0.06[3] |
| B−V color index | +0.06[3] |
| Astrometry | |
| Radial velocity (Rv) | –7.0[4] km/s |
| Proper motion (μ) | RA: +42.368 mas/yr[1] Dec.: −49.682 mas/yr[1] |
| Parallax (π) | 13.2096 ± 0.0324 mas[1] |
| Distance | 246.9 ± 0.6 ly (75.7 ± 0.2 pc) |
| Orbit[5] | |
| Period (P) | 8.0 yr |
| Semi-major axis (a) | 0.10″ |
| Eccentricity (e) | 0.45 |
| Inclination (i) | 122.6° |
| Longitude of the node (Ω) | 41.3° |
| Periastron epoch (T) | B 1939.97 |
| Argument of periastron (ω) (secondary) | 71.4° |
| Details | |
| HD 134064 A | |
| Mass | 2.15[6] M☉ |
| Luminosity | 16[7] L☉ |
| Surface gravity (log g) | 4.25[6] cgs |
| Temperature | 9,732±331[6] K |
| Rotational velocity (v sin i) | 185[6] km/s |
| Age | 160[6] Myr |
| HD 134064 B | |
| Mass | 0.73[8] M☉ |
| Other designations | |
BD+19° 2924, HD 134064, HIP 74000, HR 5633, SAO 101379, WDS J15073+1827AB[9] | |
| Database references | |
| SIMBAD | data |
HD 134064 is a binary star system in the northern constellationofBoötes. It is faintly visible to the naked eye with a combined apparent visual magnitude of 6.03.[2] This system is located at a distance of 247 light years from the Sun based on parallax measurements,[1] but is drifting closer with a radial velocity of –7.0 km/s.[4]
The components of this system are orbiting each other with a period of eight years and a high orbital eccentricity of 0.45.[5] The pair are separated by an orbital distance of around 8,000 AU.[8] The primary component is a rapidly rotating A-type main sequence star with a stellar classification of A3Vnn.[2] It has 2.15 times the mass of the Sun and is spinning with a projected rotational velocity of 185 km/s.[6] The secondary star has 73% of the Sun's mass.[8] The system is young, with an estimated age of 160 million years.[6]
