HD 128093

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HD 128093
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 34m 11.70723s[1]
Declination +32° 32′ 04.1218″[1]
Apparent magnitude (V) 6.33[2]
Characteristics
Spectral type F5V[3]
U−B color index −0.01[4]
B−V color index +0.40[4]
Astrometry
Radial velocity (Rv) −8.1[5] km/s
Proper motion (μ) RA: +106.12[1] mas/yr
Dec.: +6.34[1] mas/yr
Parallax (π) 24.65 ± 0.37[1] mas
Distance 132 ± 2 ly
(40.6 ± 0.6 pc)
Absolute magnitude (MV) 3.29[2]
Details
Luminosity 3.9[6] L
Surface gravity (log g) 4.13[7] cgs
Temperature 6,463[7] K
Metallicity [Fe/H] −0.27±0.03[7] dex
Rotational velocity (v sin i) 15[7] km/s
Age 3.1[2] Gyr
Other designations
BD+33° 2474, FK5 3153, HD 127304, HIP 71243, HR 5445, SAO 64221.
Database references
SIMBAD data

HD 128093 is a double star in the constellation Boötes. The brighter component is an F-type main sequence star with a stellar classification of F5V[3] and an apparent magnitude of 6.33.[2] It has a magnitude 11.33 companion at an angular separation of 28.1 along a position angle of 318°.[8]

References[edit]

  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 d Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982Freely accessible, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191. 
  3. ^ a b Hoffleit, D.; Warren Jr, W. H. (1991), Bright Star Catalogue (5th Revised (Preliminary Version) ed.), Astronomical Data Center, NSSDC/ADC, retrieved 2015-08-17 
  4. ^ a b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data. SIMBAD, Bibcode:1986EgUBV........0M 
  5. ^ Wilson, R. E. (1953), General Catalogue of Stellar Radial Velocities, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W. 
  6. ^ 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 
  7. ^ a b c d Balachandran, Suchitra (May 1, 1990), "Lithium depletion and rotation in main-sequence stars", Astrophysical Journal, Part 1, 354: 310–332, Bibcode:1990ApJ...354..310B, doi:10.1086/168691. 
  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]