HD 134064

HD 134064
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 15h 07m 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]
Distance246.9 ± 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
Mass2.15[6] M☉
Luminosity16[7] L☉
Surface gravity (log g)4.25[6] cgs
Temperature9,732±331[6] K
Rotational velocity (v sin i)185[6] km/s
Age160[6] Myr
HD 134064 B
Mass0.73[8] M☉
Other designations
BD+19° 2924, HD 134064, HIP 74000, HR 5633, SAO 101379, WDS J15073+1827AB[9]
Database references
SIMBADdata

HD 134064 is a binary star system in the northern constellation of Boötes. 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]

  1. ^ a b c d e Cite error: The named reference edr3 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference aa373_625 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference osawa1959 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference an328_9_889 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference ORB6 was invoked but never defined (see the help page).
  6. ^ a b c d e f g Cite error: The named reference David_Hillenbrand_2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference mnras437_2_1216 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).