HD 131551

HD 131551 is a star in the southern constellation of Apus. There is a 13th magnitude companion star at an angular separation of 34.5″ along a position angle of 123° (as of 2000).[6]

HD 131551
Observation data
Epoch J2000      Equinox J2000
Constellation Apus
Right ascension 14h 59m 55.757s[1]
Declination −75° 01′ 57.62″[1]
Apparent magnitude (V) 6.20[2]
Characteristics
Spectral type B9V[3]
U−B color index -0.20[2]
B−V color index -0.04[2]
Astrometry
Radial velocity (Rv)−7.6[4] km/s
Proper motion (μ) RA: −6.78±0.28[1] mas/yr
Dec.: −21.04±0.31[1] mas/yr
Parallax (π)6.60 ± 0.32[1] mas
Distance490 ± 20 ly
(152 ± 7 pc)
Details
Mass2.84±0.06[5] M☉
Luminosity95[5] L☉
Rotational velocity (v sin i)141[5] km/s
Other designations
CD-74° 947, HD 131551, HIP 73394, HR 5555, SAO 257219.
Database references
SIMBADdata

References
  1. 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. Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99), Bibcode:1966CoLPL...4...99J.
  3. Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  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, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
  5. 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/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224.
  6. Mason, B. D.; et al. (2014), The Washington Visual Double Star Catalog, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.