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]
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] |
Distance | 1,230 ± 90 ly (380 ± 30 pc) |
Absolute magnitude (MV) | −3.56[2] |
Details | |
Mass | 7.9±0.4[6] M☉ |
Radius | 18.87+1.35 −1.50[7] R☉ |
Luminosity | 806.3±142.9[7] L☉ |
Surface gravity (log g) | 2.55[3] cgs |
Temperature | 7,081+299 −242[7] K |
Rotational velocity (v sin i) | 23[3] km/s |
Age | 37.3±4.2[6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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]