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 |
| Distance | 490 ± 20 ly (152 ± 7 pc) |
| Details | |
| Mass | 2.84±0.06[5] M☉ |
| Luminosity | 95[5] L☉ |
| Rotational velocity (v sin i) | 141[5] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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]
References
- 1 2 3 4 5 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.
- 1 2 3 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.
- ↑ 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.
- ↑ 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.
- 1 2 3 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.
- ↑ 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
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