HD 149989

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HD 149989
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension 16h 40m 44.40039s[1]
Declination –51° 28′ 41.7351″[1]
Apparent magnitude (V) 6.30[2]
Characteristics
Spectral type A9 V[3]
Variable type γ Dor[2]
Astrometry
Proper motion (μ) RA: 12.56[1] mas/yr
Dec.: 130.30[1] mas/yr
Parallax (π) 20.24 ± 0.42[1] mas
Distance 161 ± 3 ly
(49 ± 1 pc)
Details
Rotational velocity (v sin i) 136[4] km/s
Other designations
CPD–51 9815, CD–51 10403, HD 149989, HIP 81650, NSV 20726, SAO 244058, V872 Arae.[5]

HD 149989 is the Henry Draper Catalogue designation for a star in the southern constellation of Ara. This is a variable star of the Gamma Doradus type with a period of 0.42658 days.[2]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (November 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. ^ a b c De Cat, P. et al. (April 2006), "A spectroscopic study of southern (candidate) γ Doradus stars. I. Time series analysis", Astronomy and Astrophysics 449 (1): 281–292, arXiv:astro-ph/0511207, Bibcode:2006A&A...449..281D, doi:10.1051/0004-6361:20053655 
  3. ^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H. 
  4. ^ Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224. 
  5. ^ "V872 Ara -- Variable Star of gamma Dor", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-08-03. 

External links[edit]