Observation data EpochJ2000 EquinoxJ2000 | |
---|---|
Constellation | Centaurus |
Right ascension | 12h 28m 22.46490s[1] |
Declination | −39° 02′ 28.2168″[1] |
Apparent magnitude (V) | 5.448[2] |
Characteristics | |
Spectral type | B8/9V[2] |
B−Vcolor index | -0.08[3] |
Astrometry | |
Radial velocity (Rv) | 5.00[4] km/s |
Proper motion (μ) | RA: -28.01[1]mas/yr Dec.: -13.76[1]mas/yr |
Parallax (π) | 7.47±0.28 mas[1] |
Distance | 440 ± 20 ly (134 ± 5 pc) |
Absolute magnitude (MV) | 0.28[5] |
Details | |
Mass | 2.9[5] M☉ |
Luminosity | 265[6] L☉ |
Temperature | 10990[5] K |
Age | 0.174[5] Gyr |
Other designations | |
u Cen,CD–34° 7753,HD 108541,HIP 60855,SAO 203508,HR 4748,GC 17001[2] | |
Database references | |
SIMBAD | data |
HD 108541, also known by itsBayer designationu Centauri is astar located in theconstellationCentaurus, It is also known asHR 4748. Theapparent magnitude of thestar is about 5.4, meaning it is only visible to the naked eye underexcellent viewing conditions. Its distance is about 440light-years (140parsecs), based on itsparallax measured by theHipparcosastrometry satellite.[1] Thespectral type of HD 108541 is B8/9V, meaning it is a lateB-type main sequence star. These types of stars are a few times more massive than theSun, and haveeffective temperatures of about 10,000 to 30,000K. HD 108541 is just under 3 times more massive than the Sun[5] and has a temperature of about 11,000 K.[5]
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