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 19.54267s[1]
Declination −56° 23′ 11.3838″[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: −9.437 mas/yr[1]
Dec.: −7.543 mas/yr[1]
Parallax (π)2.2511 ± 0.1972 mas[1]
Distance1,270±130 ly
(390±40 pc)[6]
Absolute magnitude (MV)−3.56[2]
Details[6]
Mass9.3±0.3 M☉
Radius21±2 R☉
Luminosity12,600+3,200
−2,600 L☉
Surface gravity (log g)2.77±0.05 cgs
Temperature13,700±300 K
Rotational velocity (v sin i)23±4 km/s
Age28.84+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
SIMBADdata

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.[2] 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.[2]

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]

  1. ^ a b c d Cite error: The named reference DR3 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 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 d Cite error: The named reference quantitative was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference HuffingtonPost2016 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference GuysBlog2016 was invoked but never defined (see the help page).