HD 127304

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HD 127304
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 29m 49.67035s[1]
Declination +31° 47′ 28.2842″[1]
Apparent magnitude (V) 6.05[2]
Spectral type A0Vs[3]
U−B color index −0.06[2]
B−V color index −0.03[2]
Radial velocity (Rv) −9.3[4] km/s
Proper motion (μ) RA: −20.37[1] mas/yr
Dec.: +7.73[1] mas/yr
Parallax (π) 9.08 ± 0.40[1] mas
Distance 360 ± 20 ly
(110 ± 5 pc)
Luminosity 36[5] L
Temperature 7,696[6] K
Rotational velocity (v sin i) 14[7] km/s
Other designations
BD+32° 2482, HD 127304, HIP 70892, HR 5422, SAO 64178.
Database references

HD 127304 is a double star in the northern constellation of Boötes. The brighter component is a sixth magnitude A-type main sequence star with a stellar classification of A0Vs[3] It has a faint magnitude 10.62 companion at an angular separation of 25.6 along a position angle of 256° (as of 2013).[8]


  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  2. ^ a b c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data. SIMBAD, Bibcode:1986EgUBV........0M. 
  3. ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819. 
  4. ^ Wilson, R. E. (1953), General Catalogue of Stellar Radial Velocities, Carnegie Institute of Washington D.C., Bibcode:1953GCRV..C......0W. 
  5. ^ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037Freely accessible, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x. 
  6. ^ Muñoz Bermejo, J.; et al. (May 2013), "A PCA approach to stellar effective temperatures", Astronomy and Astrophysics, 453: A95, arXiv:1303.7218Freely accessible, Bibcode:2013A&A...553A..95M, doi:10.1051/0004-6361/201220961. 
  7. ^ Royer, F.; et al. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785Freely accessible, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224. 
  8. ^ Mason, B. D.; et al. (2014), The Washington Visual Double Star Catalog, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22 

External links[edit]