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HD 125288
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Centaurus
Right ascension 14h 20m 19.54262s [1]
Declination −56° 23′ 11.3900″ [1]
Apparent magnitude (V) 4.30 [2]
Characteristics
Evolutionary stage Supergiant [3]
Spectral type B5Ib/II [4] or B6Ib [5]
B−V color index 0.082±0.003 [2]
Astrometry
Radial velocity (Rv)4.2±2.7 [2] km/s
Proper motion (μ) RA: −9.64 [1]  mas/ yr
Dec.: −7.46 [1]  mas/ yr
Parallax (π)2.66 ± 0.20  mas [1]
Distance1,230 ± 90  ly
(380 ± 30  pc)
Absolute magnitude (MV)−3.56 [2]
Details
Mass7.9±0.4 [6]  M
Radius18.87+1.35
−1.50
[7]  R
Luminosity806.3±142.9 [7]  L
Surface gravity (log g)2.55 [3]  cgs
Temperature7,081+299
−242
[7]  K
Rotational velocity (v sin i)23 [3] km/s
Age37.3±4.2 [6]  Myr
Other designations
v Cen, CPD−55°5984, FK5 529, GC 19318, HD 125288, HIP 70069, HR 5358, SAO 241641 [8]
Database references
SIMBAD data

HD 125288 is a single [9] star in the southern constellation of Centaurus. It has the Bayer designation v Centauri (lower case V); while HD 125288 is the star's identifier in the Henry Draper catalogue. The object has a blue-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.30. [2] Based on parallax measurements, it is located at a distance of approximately 1,230  light years from the Sun. [1] This is a candidate runaway star that is moving to the west and falling back into the Galactic plane. [5] It has an absolute magnitude of −3.56. [2]

This massive B-type supergiant star [3] has a stellar classification of B5Ib/II [4] or B6Ib. [5] It is around 37 million years old and has 8 times the mass of the Sun. [6] The star has expanded to 19 [7] times the girth of the Sun and is spinning with a projected rotational velocity of 23 km/s. [3] It is radiating 806 times the luminosity of the Sun from its photosphere at an effective temperature of 7,081 K. [7]

In 2016, an asterism including HD 125288 (SAO 241641) was unofficially identified in honor of David Bowie. [10] [11]

References

  1. ^ a b c d e f 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. S2CID  18759600. Vizier catalog entry
  2. ^ a b c d e f Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. S2CID  119257644.
  3. ^ a b c d e Fraser, M.; et al. (2010). "Atmospheric parameters and rotational velocities for a sample of Galactic B-type supergiants". Monthly Notices of the Royal Astronomical Society. 404 (3): 1306. arXiv: 1001.3337. Bibcode: 2010MNRAS.404.1306F. doi: 10.1111/j.1365-2966.2010.16392.x. S2CID  118674151.
  4. ^ a b Houk, Nancy; Cowley, A. P. (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 1. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode: 1978mcts.book.....H.
  5. ^ a b c Maíz Apellániz, J.; et al. (August 2018). "Search for Galactic runaway stars using Gaia Data Release 1 and HIPPARCOS proper motions". Astronomy & Astrophysics. 616: 20. arXiv: 1804.06915. Bibcode: 2018A&A...616A.149M. doi: 10.1051/0004-6361/201832787. S2CID  55004808. A149.
  6. ^ a b c Tetzlaff, N.; et al. (January 2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv: 1007.4883. Bibcode: 2011MNRAS.410..190T. doi: 10.1111/j.1365-2966.2010.17434.x. S2CID  118629873.
  7. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  8. ^ "HD 125288". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-02-03.
  9. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv: 0806.2878. Bibcode: 2008MNRAS.389..869E. doi: 10.1111/j.1365-2966.2008.13596.x. S2CID  14878976.
  10. ^ "David Bowie Honored With Lightning Bolt-Shaped Constellation". The Huffington Post. 18 January 2016. Retrieved 2016-01-18.
  11. ^ "Constellation Bowie? I don't think so". Guy's weblog. 2016-01-18. Retrieved 2016-01-18.