HD 125288

This article is about v Centauri. Not to be confused with ν (nu) Centauri. For the variable star, see V Centauri.
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
SIMBADdata

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]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference fraser2010 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference houk1979 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Apellániz2018 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference HuffingtonPost2016 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference GuysBlog2016 was invoked but never defined (see the help page).