HD 125288

Last updated
HD 125288
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Centaurus [1]
Right ascension 14h 20m 19.54267s [2]
Declination −56° 23′ 11.3838″ [2]
Apparent magnitude  (V)4.30 [1]
Characteristics
Evolutionary stage Supergiant [3]
Spectral type B5Ib/II [4] or B6Ib [5]
B−V color index 0.082±0.003 [1]
Astrometry
Radial velocity (Rv)4.2±2.7 [1] km/s
Proper motion (μ)RA: −9.437 mas/yr [2]
Dec.: −7.543 mas/yr [2]
Parallax (π)2.2511±0.1972  mas [2]
Distance 1,270±130  ly
(390±40  pc) [6]
Absolute magnitude  (MV)−3.56 [1]
Details [6]
Mass 9.3±0.3  M☉
Radius 21±2  R☉
Luminosity 12,600+3,200
−2,600  L☉
Surface gravity (log g)2.77±0.05  cgs
Temperature 13,700±300  K
Rotational velocity (v sin i)23±4 km/s
Age 28.84+3.52
−3.14  Myr
Other designations
v Cen, CPD−55°5984, FK5 529, GC 19318, HD 125288, HIP 70069, HR 5358, SAO 241641 [7]
Database references
SIMBAD data

HD 125288 is a single [8] 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. [1] Based on spectroscopic measurements, it is located at a distance of approximately 1,270  light years from Earth. [6] 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. [1]

This massive B-type supergiant star [3] has a stellar classification of B5Ib/II [4] or B6Ib. [5] It is around 29 million years old and has 9 times the mass of the Sun. The star has expanded to 21 times the girth of the Sun and is spinning with a projected rotational velocity of 23 km/s. It is radiating 12,600 times the luminosity of the Sun from its photosphere at an effective temperature of 13,700 K. [6]

In 2016, an asterism including HD 125288 (SAO 241641) was unofficially identified in honor of David Bowie. [9] [10]

References

  1. 1 2 3 4 5 6 7 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. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 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. 1 2 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. 1 2 3 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. 1 2 3 4 Weßmayer, D.; Przybilla, N.; Butler, K. (2022-12-01), "Quantitative spectroscopy of B-type supergiants", Astronomy & Astrophysics , 668: A92, arXiv: 2208.02692 , Bibcode:2022A&A...668A..92W, doi:10.1051/0004-6361/202243973, ISSN   0004-6361
  7. ↑ "HD 125288". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-02-03.
  8. ↑ 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.
  9. ↑ "David Bowie Honored With Lightning Bolt-Shaped Constellation". The Huffington Post. 18 January 2016. Retrieved 2016-01-18.
  10. ↑ "Constellation Bowie? I don't think so". Guy's weblog. 2016-01-18. Retrieved 2016-01-18.
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