HD 135438

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HD 135438
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 15h 14m 06.04370s[1]
Declination +31° 47′ 16.2399″[1]
Apparent magnitude (V) 6.0992±0.0007[2]
Characteristics
Spectral type K5[3]
B−V color index 1.52[3]
Astrometry
Radial velocity (Rv) +4[4] km/s
Proper motion (μ) RA: +42.29±0.20[1] mas/yr
Dec.: −30.32±0.27[1] mas/yr
Parallax (π) 4.92 ± 0.37[1] mas
Distance 660 ± 50 ly
(200 ± 20 pc)
Details
Luminosity 407[5] L
Temperature 3,975[5] K
Other designations
BD+32° 2561, HD 135438, HIP 74561, HR 5674, SAO 64574.
Database references
SIMBAD data

HD 135438 is a K-type giant star[3] in the northern constellation of Boötes. It has a magnitude 9.36 companion at an angular separation of 118.2 along a position angle of 158° (as of 2012).[6]

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:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  2. ^ Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics 430: 165–186, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272. 
  3. ^ a b c Percy, John R. (December 1993), "The photometric variability of K giants", Astronomical Society of the Pacific 105 (694): 1422−1426, Bibcode:1993PASP..105.1422P, doi:10.1086/133324. 
  4. ^ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters 32 (11): 759–771, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065. 
  5. ^ a b 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:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x. 
  6. ^ Mason, B. D.; et al. (2014), The Washington Visual Double Star Catalog, Bibcode:2001AJ....122.3466M, retrieved 2015-07-22. 

External links[edit]